| Ship Name | Namesake | MC Hull No.
 | Ship type | Laid down | Launched | Fate | 
|---|
| SS M. E. Comerford | Michael E. Comerford | 2390 | standard | 000000001944-11-10-000010 November 1944 | 000000001944-12-12-000012 December 1944 | Scrapped 1970 | 
| SS M. H. De Young | M. H. de Young | 1587 | standard | 000000001943-06-15-000015 June 1943 | 000000001943-07-06-00006 July 1943 | Torpedoed in the Pacific 1943, to U.S. Navy as Antelope (IX-109), scrapped 1950 | 
| SS M. M. Guhin | Michael M. Guhin | 615 | standard | 000000001942-12-05-00005 December 1942 | 000000001942-12-28-000028 December 1942 | Scrapped 1973 | 
| SS M. Michael Edelstein | M. Michael Edelstein | 2305 | standard | 000000001944-04-28-000028 April 1944 | 000000001944-06-05-00005 June 1944 | Sold private 1947, scrapped 1969 | 
| SS Mack Bruton Bryan | Mack Bruton Bryan | 2893 | standard | 000000001944-11-24-000024 November 1944 | 000000001944-12-30-000030 December 1944 | Sold private 1947, scrapped 1967 | 
| SS Mahlon Pitney | Mahlon Pitney | 942 | standard | 000000001942-12-31-000031 December 1942 | 000000001943-02-11-000011 February 1943 | Sold private 1968, converted to a crane barge | 
| SS Malcolm M. Stewart | Malcolm M. Stewart | 645 | standard | 000000001942-08-13-000013 August 1942 | 000000001942-09-21-000021 September 1942 | Scrapped 1971 | 
| SS Manasseh Cutler | Manasseh Cutler | 2094 | standard | 000000001943-09-12-000012 September 1943 | 000000001943-09-27-000027 September 1943 | Torpedoed and lost in the Gulf of Aden 1943 | 
| SS Marcus Daly | Marcus Daly | 1697 | standard | 000000001943-06-28-000028 June 1943 | 000000001943-07-24-000024 July 1943 | Kamikazied in Leyte Gulf 1944, repaired, scrapped 1968 | 
| SS Marcus H. Tracy | Marcus H. Tracy | 3046 | standard | 000000001944-06-12-000012 June 1944 | 000000001944-07-31-000031 July 1944 | Scrapped 1969 | 
| SS Marcus Whitman | Marcus Whitman | 547 | standard | 000000001942-05-22-000022 May 1942 | 000000001942-06-30-000030 June 1942 | Torpedoed and lost off Brazil 1942 | 
| SS Margaret Brent | Margaret Brent | 1787 | standard | 000000001943-08-24-000024 August 1943 | 000000001943-09-18-000018 September 1943 | Sold private 1947, converted to floating warehouse 1967 | 
| SS Margaret Fuller | Margaret Fuller | 723 | standard | 000000001943-02-06-00006 February 1943 | 000000001943-03-06-00006 March 1943 | Scrapped 1967 | 
| SS Maria Mitchell | Maria Mitchell | 722 | standard | 000000001943-02-04-00004 February 1943 | 000000001943-03-04-00004 March 1943 | Scrapped 1971 | 
| SS Maria Sanford | Maria Sanford | 1562 | standard | 000000001943-05-24-000024 May 1943 | 000000001943-06-20-000020 June 1943 | Scrapped 1960 | 
| SS Marie M. Meloney | Marie M. Meloney | 1778 | standard | 000000001943-08-10-000010 August 1943 | 000000001943-09-04-00004 September 1943 | Scrapped 1969 | 
| SS Marina Raskova | Marina Raskova | 1679 | standard | 000000001943-05-31-000031 May 1943 | 000000001943-06-24-000024 June 1943 | Marina Raskova SS was a Svalbard and Jan Mayen Islands Cargo Steamer of 9,083 tons. On 12 August 1944 she was torpedoed by German submarine U-365 and sunk. 50 persons saved. Many women and children lost. | 
| SS Marion McKinley Bovard | Marion McKinley Bovard | 665 | standard | 000000001942-10-04-00004 October 1942 | 000000001942-11-05-00005 November 1942 | Scrapped 1960 | 
| SS Mariscal Sucre | Mariscal Sucre | 2789 | standard | 000000001944-03-30-000030 March 1944 | 000000001944-04-19-000019 April 1944 | Scrapped 1968 | 
| SS Mark A. Davis | Mark A. Davis | 3002 | standard | 000000001945-01-31-000031 January 1945 | 000000001945-03-12-000012 March 1945 | Scrapped 1967 | 
| SS Mark Hanna | Mark Hanna | 573 | standard | 000000001942-08-20-000020 August 1942 | 000000001942-09-20-000020 September 1942 | Torpedoed off Dutch Guiana 1943, repaired, scrapped 1961 | 
| SS Mark Hopkins | Mark Hopkins | 1231 | standard | 000000001942-11-12-000012 November 1942 | 000000001943-01-17-000017 January 1943 | Scrapped 1968 | 
| SS Mark Keppel | Mark Keppel | 1639 | standard | 000000001943-03-26-000026 March 1943 | 000000001943-04-18-000018 April 1943 | Scrapped 1963 | 
| SS Mark Twain | Mark Twain | 196 | standard | 000000001942-04-05-00005 April 1942 | 000000001942-05-16-000016 May 1942 | Scrapped 1959 | 
| SS Marshall Elliott | Marshall Elliott | 866 | standard | 000000001942-10-20-000020 October 1942 | 000000001942-11-27-000027 November 1942 | Scrapped 1968 | 
| SS Martha Berry | Martha Berry | 2873 | standard | 000000001944-06-30-000030 June 1944 | 000000001944-08-19-000019 August 1944 | Scrapped 1972 | 
| SS Martha C. Thomas | Martha C. Thomas | 1845 | standard | 000000001943-11-21-000021 November 1943 | 000000001943-12-14-000014 December 1943 | Sold private 1947, scrapped 1963 | 
| SS Martin Behrman | Martin Behrman | 2827 | standard | 000000001944-10-25-000025 October 1944 | 000000001944-12-04-00004 December 1944 | Scrapped 1965 | 
| SS Martin Johnson | Martin Johnson | 2244 | standard | 000000001944-03-17-000017 March 1944 | 000000001944-04-14-000014 April 1944 | Sold private 1947, scrapped 1969 | 
| SS Martin Van Buren | Martin Van Buren | 1851 | standard | 000000001943-11-30-000030 November 1943 | 000000001943-12-21-000021 December 1943 | Torpedoed and lost off Halifax 1944 | 
| SS Mary A. Livermore | Mary A. Livermore | 2292 | standard | 000000001943-11-04-00004 November 1943 | 000000001943-11-22-000022 November 1943 | Kamikazied off Okinawa 1945, repaired, sold private 1947, scrapped 1968 | 
| SS Mary Ashley Townsend | Mary Ashley Townsend | 1735 | tanker | 000000001943-06-03-00003 June 1943 | 000000001943-07-25-000025 July 1943 | Sold private 1948, scrapped 1968 | 
| SS Mary Austin | Mary Austin | 858 | standard | 000000001943-05-13-000013 May 1943 | 000000001943-06-19-000019 June 1943 | Scrapped 1972 | 
| SS Mary Ball | Mary Ball | 1534 | tank carrier, aircraft freighter | 000000001943-07-20-000020 July 1943 | 000000001943-10-17-000017 October 1943 | Scrapped 1972 | 
| SS Mary Bickerdyke | Mary Bickerdyke | 2116 | standard | 000000001943-10-05-00005 October 1943 | 000000001943-10-27-000027 October 1943 | Sold private 1947, wrecked 1948, declared total loss but repaired, sunk 1966 | 
| SS Mary Cassatt | Mary Cassatt | 1553 | standard | 000000001943-04-17-000017 April 1943 | 000000001943-05-16-000016 May 1943 | To Russia 1943 as Odessa, still afloat as a storage facility in Vladivostok | 
| SS Mary Cullom Kimbro | Mary Cullom Kimbro | 2349 | boxed aircraft transport | 000000001945-02-21-000021 February 1945 | 000000001945-04-06-00006 April 1945 | To U.S. Army 1945 as Corporal Eric G. Gibson, scuttled 1967 in the Atlantic with obsolete equipment | 
| SS Mary E. Kinney | Mary E. Kinney | 2577 | standard | 000000001943-12-14-000014 December 1943 | 000000001943-12-29-000029 December 1943 | Scrapped 1963 | 
| SS Mary Lyon | Mary Lyon | 787 | standard | 000000001943-03-08-00008 March 1943 | 000000001943-05-03-00003 May 1943 | Sold private 1947, sunk 1963 | 
| SS Mary M. Dodge | Mary M. Dodge | 2138 | standard | 000000001943-08-04-00004 August 1943 | 000000001943-08-25-000025 August 1943 | Sold private 1947, scrapped 1969 | 
| SS Mary Patten | Mary Patten | 1725 | standard | 000000001943-07-21-000021 July 1943 | 000000001943-08-11-000011 August 1943 | To U.S. Navy as Azimech (AK-124), scrapped 1972 | 
| SS Mary Pickersgill | Mary Pickersgill | 2654 | standard | 000000001944-05-27-000027 May 1944 | 000000001944-06-29-000029 June 1944 | Sold private 1947, scrapped 1971 | 
| SS Mary Walker | Mary Walker | 2289 | standard | 000000001943-10-30-000030 October 1943 | 000000001943-11-18-000018 November 1943 | Sold private 1947, scrapped 1963 | 
| SS Mary Wilkins Freeman | Mary Wilkins Freeman | 2192 | standard | 000000001943-10-01-00001 October 1943 | 000000001943-11-13-000013 November 1943 | Sold private 1947, scrapped 1966 | 
| USS Masbate (ARG-15) | Masbate | 2666 | standard | 000000001944-07-01-00001 July 1944 | 000000001944-08-05-00005 August 1944 | To U.S. Navy as ARG-15, then Webster (ARV-2), reefed off Cape Henry 1977 | 
| SS Mason L. Weems | Mason L. Weems | 1928 | tanker | 000000001943-11-01-00001 November 1943 | 000000001943-12-17-000017 December 1943 | To U.S. Navy as Moose (IX-124), sold private 1948, wrecked and scrapped 1965 | 
| SS Matt W. Ransom | Matt W. Ransom | 887 | standard | 000000001943-01-09-00009 January 1943 | 000000001943-02-06-00006 February 1943 | Torpedoed off Casablanca, repaired, sunk as breakwater off Normandy and abandoned 1944 | 
| SS Mathew B. Brady | Mathew B. Brady | 1117 | standard | 000000001943-04-23-000023 April 1943 | 000000001943-05-18-000018 May 1943 | Scrapped 1960 | 
| SS Matthew Brush | Matthew Brush | 1766 | standard | 000000001943-07-18-000018 July 1943 | 000000001943-08-14-000014 August 1943 | Sold private 1947, scrapped 1971 | 
| SS Matthew J. O'Brien | Matthew J. O'Brien | 1965 | standard | 000000001943-10-12-000012 October 1943 | 000000001943-11-20-000020 November 1943 | Scrapped 1966 | 
| SS Matthew Lyon | Matthew Lyon | 535 | standard | 000000001943-03-18-000018 March 1943 | 000000001943-04-11-000011 April 1943 | Torpedoed in the Pacific 1943, to U.S. Navy as Zebra (IX-107) 1944, scrapped 1972 | 
| SS Matthew Maury | Matthew Maury | 97 | standard | 000000001941-07-25-000025 July 1941 | 000000001942-04-29-000029 April 1942 | Torpedoed off Algeria 1943, repaired, scrapped 1961 | 
| SS Matthew P. Deady | Matthew P. Deady | 545 | standard | 000000001942-05-11-000011 May 1942 | 000000001942-06-23-000023 June 1942 | Kamikazied off Leyte 1944, repaired, scrapped 1961 | 
| SS Matthew Sheehan | Matthew Sheehan | 3075 | standard | 000000001944-09-23-000023 September 1944 | 000000001944-11-04-00004 November 1944 | Scrapped 1972 | 
| SS Matthew T. Goldsboro | Matthew T. Goldsboro | 898 | standard | 000000001943-02-13-000013 February 1943 | 000000001943-03-15-000015 March 1943 | Scrapped 1969 | 
| SS Matthew Thornton | Matthew Thornton | 262 | standard | 000000001942-06-30-000030 June 1942 | 000000001942-08-12-000012 August 1942 | Scrapped 1971 | 
| SS Mayo Brothers | Charles and William Mayo | 318 | standard | 000000001942-10-28-000028 October 1942 | 000000001942-12-14-000014 December 1942 | Scrapped 1965 | 
| SS Mello Franco | Afranio de Mello Franco | 2281 | standard | 000000001944-04-18-000018 April 1944 | 000000001944-05-06-00006 May 1944 | Sold private 1947, scrapped 1969 | 
| USS Melucta (AK-131) | Melucta | 2470 | standard | 000000001944-01-21-000021 January 1944 | 000000001944-03-20-000020 March 1944 | To U.S. Navy as AK-131, scrapped 1970 | 
| SS Melvil Dewey | Melvil Dewey | 1849 | standard | 000000001943-11-26-000026 November 1943 | 000000001943-12-18-000018 December 1943 | Sold private 1947, burnt and scrapped 1967 | 
| SS Melville E. Stone | Melville E. Stone | 1715 | standard | 000000001943-07-02-00002 July 1943 | 000000001943-07-24-000024 July 1943 | Torpedoed and lost off Panama 1943 | 
| SS Melville Jacoby | Melville Jacoby | 3119 | standard | 000000001943-10-27-000027 October 1943 | 000000001944-01-18-000018 January 1944 | Sold private 1947, declared total loss 1961, scrapped | 
| SS Melville W. Fuller | Melville W. Fuller | 504 | standard | 000000001942-10-13-000013 October 1942 | 000000001942-11-15-000015 November 1942 | To U.S. Navy as Cassiopeia (AK-75), sunk as target 1961 | 
| SS Mercy Warren | Mercy Warren | 2201 | standard | 000000001943-10-11-000011 October 1943 | 000000001943-11-24-000024 November 1943 | Scrapped 1971 | 
| SS Meriwether Lewis | Meriwether Lewis | 170 | standard | 000000001941-05-19-000019 May 1941 | 000000001941-10-19-000019 October 1941 | Torpedoed and lost in the North Atlantic 1943 | 
| SS Merrimac Seam | Merrimac Seam | 2847 | collier | 000000001945-01-12-000012 January 1945 | 000000001945-03-13-000013 March 1945 | Sold private 1947, scrapped 1970 | 
| SS Meyer Lissner | Meyer Lissner | 2541 | standard | 000000001943-11-09-00009 November 1943 | 000000001943-12-04-00004 December 1943 | Sold private 1947, scrapped 1968 | 
| SS Meyer London | Meyer London | 2585 | standard | 000000001943-12-27-000027 December 1943 | 000000001944-01-24-000024 January 1944 | Torpedoed and lost off Libya 1944 | 
| SS Miaoulis | Miaoulis | 3031 | standard | 000000001944-04-20-000020 April 1944 | 000000001944-06-07-00007 June 1944 | Sold private 1947, scrapped 1967 | 
| SS Michael Anagnos | Michael Anagnos | 3058 | standard | 000000001944-07-31-000031 July 1944 | 000000001944-09-18-000018 September 1944 | Sold private 1947, scrapped 1973 | 
| SS Michael C. Kerr | Michael C. Kerr | 2118 | standard | 000000001943-10-13-000013 October 1943 | 000000001943-10-30-000030 October 1943 | Scrapped 1969 | 
| SS Michael Casey | Michael Casey | 2101 | standard | 000000001943-08-15-000015 August 1943 | 000000001943-09-09-00009 September 1943 | Sold private 1947, laid up in Greece | 
| SS Michael De Kovats | Michael De Kovats | 2495 | standard | 000000001944-08-09-00009 August 1944 | 000000001944-09-16-000016 September 1944 | Scrapped 1972 | 
| SS Michael J. Owens | Michael J. Owens | 2958 | standard | 000000001944-08-03-00003 August 1944 | 000000001944-09-09-00009 September 1944 | Sold private 1947, wrecked and scrapped 1961 | 
| SS Michael J. Stone | Michael J. Stone | 99 | standard | 000000001941-10-23-000023 October 1941 | 000000001942-05-22-000022 May 1942 | Torpedoed off Gibraltar 1945, repaired, scrapped 1960 | 
| SS Michael James Monohan | Michael James Monohan | 2335 | boxed aircraft transport | 000000001944-11-22-000022 November 1944 | 000000001945-01-04-00004 January 1945 | To U.S. Navy 1967 scuttled in the Atlantic with obsolete Polaris motors | 
| SS Michael Moran | Michael Moran | 3050 | standard | 000000001944-06-28-000028 June 1944 | 000000001944-08-16-000016 August 1944 | Scuttled with obsolete ammo 1958 | 
| SS Michael Pupin | Michael Pupin | 1554 | standard | 000000001943-04-18-000018 April 1943 | 000000001943-05-19-000019 May 1943 | Scrapped 1962 | 
| SS Midwest Farmer | Farmers in the Midwestern United States | 2082 | standard | 000000001943-08-26-000026 August 1943 | 000000001943-09-10-000010 September 1943 | Scrapped 1961 | 
| SS Miguel Hidalgo | Miguel Hidalgo | 1636 | standard | 000000001943-03-19-000019 March 1943 | 000000001943-04-14-000014 April 1943 | Scrapped 1958 | 
| SS Milan R. Stefanik | Milan Rastislav Štefánik | 2679 | standard | 000000001944-08-26-000026 August 1944 | 000000001944-09-27-000027 September 1944 | Sold private 1947, wrecked and scrapped 1964 | 
| SS Millen Griffith | Millen Griffith | 2129 | standard | 000000001943-11-26-000026 November 1943 | 000000001943-12-18-000018 December 1943 | Scrapped 1958 | 
| SS Milton B. Medary | Milton B. Medary | 2798 | standard | 000000001944-05-17-000017 May 1944 | 000000001944-07-08-00008 July 1944 | Scrapped 1966 | 
| SS Milton H. Smith | Milton H. Smith | 2803 | standard | 000000001944-06-22-000022 June 1944 | 000000001944-07-31-000031 July 1944 | Scrapped 1972 | 
| SS Milton J. Foreman | Milton J. Foreman | 2882 | standard | 000000001944-09-08-00008 September 1944 | 000000001944-10-21-000021 October 1944 | Sold private 1947, scrapped 1965 | 
| SS Mingo Seam | Mingo Seam | 2861 | collier | 000000001945-05-09-00009 May 1945 | 000000001945-07-17-000017 July 1945 | Sold private 1947, scrapped 1967 | 
| SS Minnie M. Fiske | Minnie M. Fiske | 1547 | standard | 000000001943-12-08-00008 December 1943 | 000000001944-01-29-000029 January 1944 | Scrapped 1966 | 
| SS Minor C. Keith | Minor C. Keith | 2928 | standard | 000000001944-03-28-000028 March 1944 | 000000001944-05-08-00008 May 1944 | Sold private 1947, scrapped 1969 | 
| SS Mirabeau B. Lamar | Mirabeau B. Lamar | 267 | standard | 000000001941-12-30-000030 December 1941 | 000000001942-06-19-000019 June 1942 | Scrapped 1963 | 
| SS Moina Michael | Moina Michael | 2885 | standard | 000000001944-09-29-000029 September 1944 | 000000001944-11-09-00009 November 1944 | Scrapped 1971 | 
| SS Mollie Moore Davis | Mollie Moore Davis | 2458 | standard | 000000001944-02-11-000011 February 1944 | 000000001944-03-27-000027 March 1944 | To U.S. Navy as Burias (ARG-13), to NDRF 1946, scrapped 1970 | 
| SS Molly Pitcher | Molly Pitcher | 935 | standard | 000000001942-12-12-000012 December 1942 | 000000001943-01-30-000030 January 1943 | Torpedoed and lost west of Lisbon 1943 | 
| USS Mona Island (ARG-9) | Mona Island | 2634 | standard | 000000001944-04-10-000010 April 1944 | 000000001944-05-11-000011 May 1944 | To U.S. Navy as ARG-9, wrecked on Okinawa 1945 but repaired, reefed off Wachapreague 1975 | 
| SS Montfort Stokes | Montfort Stokes | 2000 | standard | 000000001943-07-16-000016 July 1943 | 000000001943-08-14-000014 August 1943 | Sold private 1947, scrapped 1962 | 
| SS Morgan Robertson | Morgan Robertson | 2741 | standard | 000000001944-01-10-000010 January 1944 | 000000001944-01-28-000028 January 1944 | Sold private 1947, scrapped 1973 | 
| SS Morris C. Feinstone | Morris C. Feinstone | 2499 | standard | 000000001944-09-05-00005 September 1944 | 000000001944-10-10-000010 October 1944 | Scrapped 1972 | 
| SS Morris Hillquit | Morris Hillquit | 2419 | standard | 000000001943-12-24-000024 December 1943 | 000000001944-01-27-000027 January 1944 | Sold private 1947, scrapped 1966 | 
| SS Morris Sheppard | Morris Sheppard | 2910 | standard | 000000001943-12-13-000013 December 1943 | 000000001944-02-03-00003 February 1944 | Sold private 1947, scrapped 1978 | 
| SS Morris Sigman | Morris Sigman | 2586 | standard | 000000001943-12-30-000030 December 1943 | 000000001944-02-02-00002 February 1944 | Sold private 1947, scrapped 1968 | 
| SS Morrison R. Waite | Morrison R. Waite | 503 | standard | 000000001942-10-08-00008 October 1942 | 000000001942-11-10-000010 November 1942 | Kamikazied in Leyte Gulf 1944, repaired, scrapped 1963 | 
| SS Morton M. McCarver | Morton M. McCarver | 1595 | standard | 000000001943-01-19-000019 January 1943 | 000000001943-02-18-000018 February 1943 | Scrapped 1967 | 
| SS Morton Prince | Morton Prince | 1893 | tanker | 000000001943-09-13-000013 September 1943 | 000000001943-10-14-000014 October 1943 | Sold private 1947, scrapped 1971 | 
| SS Moses Austin | Moses Austin | 843 | standard | 000000001943-02-25-000025 February 1943 | 000000001943-04-10-000010 April 1943 | Sold private 1947, scrapped 1969 | 
| SS Moses Brown | Moses Brown | 1462 | standard | 000000001943-02-26-000026 February 1943 | 000000001943-05-10-000010 May 1943 | Scrapped 1961 | 
| SS Moses Cleaveland | Moses Cleaveland | 1750 | standard | ? | ? | Was sailing as late as 1948 for Luckenbach line | 
| SS Moses G. Farer | Moses G. Farer | 2731 | standard | 000000001943-12-23-000023 December 1943 | 000000001944-01-13-000013 January 1944 | Scrapped 1962 | 
| SS Moses Rogers | Moses Rogers | 492 | standard | 000000001942-07-30-000030 July 1942 | 000000001942-09-13-000013 September 1942 | Scrapped 1971 | 
| SS Murat Halstead | Murat Halstead | 2102 | standard | 000000001943-08-19-000019 August 1943 | 000000001943-09-13-000013 September 1943 | Torpedoed and lost in the Arabian Sea 1944 | 
| SS Murray M. Blum | Murray M. Blum | 2381 | standard | 000000001944-09-19-000019 September 1944 | 000000001944-10-25-000025 October 1944 | Scrapped 1971 | 
| SS Myron T. Herrick | Myron T. Herrick | 1700 | standard | 000000001943-07-09-00009 July 1943 | 000000001943-08-04-00004 August 1943 | Scrapped 1961 | 
| SS Nachman Syrkin | Nachman Syrkin | 2830 | standard | 000000001944-11-13-000013 November 1944 | 000000001944-12-23-000023 December 1944 | Sold private 1951, scrapped 1967 | 
| SS Nancy Hanks | Nancy Hanks | 455 | standard | 000000001942-12-21-000021 December 1942 | 000000001943-01-24-000024 January 1943 | Scrapped 1958 | 
| SS Napoleon B. Broward | Napoleon B. Broward | 1214 | standard | 000000001943-10-16-000016 October 1943 | 000000001943-11-30-000030 November 1943 | To U.S. Navy as Matar (AK-119), scrapped 1972 | 
| SS Narcissa Whitman | Narcissa Whitman | 2574 | standard | 000000001943-12-03-00003 December 1943 | 000000001943-12-18-000018 December 1943 | Scrapped 1961 | 
| SS Nathan B. Forrest | Nathan B. Forrest | 1539 | tank carrier | 000000001943-10-02-00002 October 1943 | 000000001943-11-13-000013 November 1943 | Scrapped 1973 | 
| SS Nathan Clifford | Nathan Clifford | 944 | standard | 000000001943-01-01-00001 January 1943 | 000000001943-02-18-000018 February 1943 | Sold private 1947, sunk 1965 | 
| SS Nathan Hale | Nathan Hale | 72 | standard | 000000001941-09-29-000029 September 1941 | 000000001942-02-04-00004 February 1942 | Mined off Gorgona 1946 and scrapped | 
| SS Nathan S. Davis | Nathan S. Davis | 2740 | standard | 000000001944-01-08-00008 January 1944 | 000000001944-01-27-000027 January 1944 | Sold private 1947, scrapped 1962 | 
| SS Nathan Towson | Nathan Towson | 1008 | standard | 000000001943-05-28-000028 May 1943 | 000000001943-06-28-000028 June 1943 | Scrapped 1974 | 
| SS Nathanael Greene | Nathanael Greene | 146 | standard | 000000001941-05-22-000022 May 1941 | 000000001942-01-17-000017 January 1942 | Torpedoed off Oran and beached 1943, TL | 
| SS Nathaniel Alexander | Nathaniel Alexander | 167 | standard | 000000001942-08-02-00002 August 1942 | 000000001942-10-04-00004 October 1942 | Sold private 1947, scrapped 1968 | 
| SS Nathaniel B. Palmer | Nathaniel B. Palmer | 1903 | tanker | 000000001943-10-05-00005 October 1943 | 000000001943-11-02-00002 November 1943 | To U.S. Navy as Caribou (IX-114), sold private 1948, wrecked 1952, repaired, scrapped 1962 | 
| SS Nathaniel Bacon | Nathaniel Bacon | 11 | standard | 000000001942-07-01-00001 July 1942 | 000000001942-09-03-00003 September 1942 | Wrecked 1942, repaired, CTL 1946, salvaged, converted 1951, scrapped 1963 | 
| SS Nathaniel Bowditch | Nathaniel Bowditch | 429 | standard | 000000001942-10-03-00003 October 1942 | 000000001942-11-10-000010 November 1942 | Scrapped 1960 | 
| SS Nathaniel Crosby | Nathaniel Crosby | 2078 | standard | 000000001943-08-19-000019 August 1943 | 000000001943-09-05-00005 September 1943 | Scrapped 1970 | 
| SS Nathaniel Currier | Nathaniel Currier | 529 | standard | 000000001943-02-10-000010 February 1943 | 000000001943-03-11-000011 March 1943 | Scrapped 1971 | 
| SS Nathaniel Hawthorne | Nathaniel Hawthorne | 187 | standard | 000000001942-02-05-00005 February 1942 | 000000001942-03-31-000031 March 1942 | Torpedoed and lost off Trinidad 1942 | 
| SS Nathaniel J. Wyeth | Nathaniel J. Wyeth | 1598 | standard | 000000001943-01-31-000031 January 1943 | 000000001943-02-24-000024 February 1943 | To U.S. Navy as De Grasse (AP-164), scrapped 1970 | 
| SS Nathaniel Macon | Nathaniel Macon | 880 | standard | 000000001942-12-13-000013 December 1942 | 000000001943-01-17-000017 January 1943 | Sold private 1947, wrecked 1952, CTL but repaired, scrapped 1969 | 
| SS Nathaniel Scudder | Nathaniel Scudder | 2938 | standard | 000000001944-05-12-000012 May 1944 | 000000001944-06-15-000015 June 1944 | To U.S. Army 1944, aircraft repair ship Brigadier General Alfred J. Lyon | 
| SS Nathaniel Silsbee | Nathaniel Silsbee | 2940 | standard | 000000001944-05-18-000018 May 1944 | 000000001944-06-23-000023 June 1944 | Scrapped 1972 | 
| SS Negley D. Cochran | Negley D. Cochran | 2492 | standard | 000000001944-07-19-000019 July 1944 | 000000001944-08-29-000029 August 1944 | Sold private, sunk 1969 | 
| SS Neils Poulson | Neils Poulson | 2371 | standard | 000000001944-07-06-00006 July 1944 | 000000001944-08-18-000018 August 1944 | Mined off Gorgona 1946, CTL, scrapped 1948 | 
| SS Nelson Aldrich | Nelson Aldrich | 3123 | standard | 000000001943-11-18-000018 November 1943 | 000000001944-04-02-00002 April 1944 | Scrapped 1968 | 
| SS Nelson Dingley | Nelson Dingley | 810 | standard | 000000001943-06-10-000010 June 1943 | 000000001943-07-20-000020 July 1943 | Sold private 1947, scrapped 1972 | 
| SS Newton D. Baker | Newton D. Baker | 1520 | standard | 000000001942-09-03-00003 September 1942 | 000000001943-02-25-000025 February 1943 | Scrapped 1968 | 
| SS Nicholas Biddle | Nicholas Biddle | 917 | standard | 000000001942-08-11-000011 August 1942 | 000000001942-09-22-000022 September 1942 | Scrapped 1963 | 
| SS Nicholas D. Labadie | Nicholas D. Labadie | 2929 | standard | 000000001944-03-31-000031 March 1944 | 000000001944-05-11-000011 May 1944 | Scrapped 1962 | 
| SS Nicholas Gilman | Nicholas Gilman | 103 | standard | 000000001942-05-04-00004 May 1942 | 000000001942-07-25-000025 July 1942 | Scrapped 1963 | 
| SS Nicholas Herkimer | Nicholas Herkimer | 1052 | standard | 000000001943-04-08-00008 April 1943 | 000000001943-06-08-00008 June 1943 | Scrapped 1967 | 
| SS Nicholas J. Sinnott | Nicholas J. Sinnott | 2035 | standard | 000000001943-06-03-00003 June 1943 | 000000001943-06-23-000023 June 1943 | Sold private 1947, scrapped 1966 | 
| SS Nicholas Longworth | Nicholas Longworth | 1908 | tanker | 000000001943-10-16-000016 October 1943 | 000000001943-11-15-000015 November 1943 | To U.S. Navy as Ibex (IX-119), sold private 1948, wrecked and scrapped 1966 | 
| SS Nick Stoner | Nick Stoner | 2307 | standard | 000000001944-05-12-000012 May 1944 | 000000001944-06-17-000017 June 1944 | Scrapped 1964 | 
| SS Nikola Tesla | Nikola Tesla | 1792 | standard | 000000001943-08-31-000031 August 1943 | 000000001943-09-25-000025 September 1943 | Sold private 1947, scrapped 1970 | 
| SS Noah Brown | Noah Brown | 2481 | standard | 000000001944-04-28-000028 April 1944 | 000000001944-06-08-00008 June 1944 | Sold private 1947, scrapped 1969 | 
| SS Noah H. Swayne | Noah H. Swayne | 500 | standard | 000000001942-09-20-000020 September 1942 | 000000001942-10-28-000028 October 1942 | To U.S. Navy as Arided (AK-73), scrapped 1962 | 
| SS Noah Webster | Noah Webster | 776 | standard | 000000001942-11-12-000012 November 1942 | 000000001943-01-31-000031 January 1943 | Reefed off Alabama 1976 | 
| SS Norman Edward Mack | Norman E. Mack | 2169 | standard | 000000001943-09-26-000026 September 1943 | 000000001943-10-16-000016 October 1943 | Scrapped 1971 | 
| SS Norman Hapgood | Norman Hapgood | 2167 | standard | 000000001943-09-24-000024 September 1943 | 000000001943-10-13-000013 October 1943 | Sold private 1947, scrapped 1973 | 
| SS Norman J. Colman | Norman J. Colman | 2285 | standard | 000000001944-04-23-000023 April 1944 | 000000001944-05-13-000013 May 1944 | Scrapped 1971 | 
| SS Norman O. Pedrick | Norman O. Pedrick | 1932 | tanker | 000000001943-11-13-000013 November 1943 | 000000001944-01-07-00007 January 1944 | To U.S. Navy as Stag (IX-128), then AW 1, to NDRF 1946, scrapped 1970 | 
| SS O. B. Martin | O. B. Martin | 2926 | standard | 000000001944-03-20-000020 March 1944 | 000000001944-04-28-000028 April 1944 | Scrapped 1973 | 
| SS O. Henry | O. Henry | 486 | standard | 000000001942-06-08-00008 June 1942 | 000000001942-08-08-00008 August 1942 | Scrapped 1962 | 
| SS O. L. Bodenhamer | O. L. Bodenhamer | 2800 | standard | 000000001944-06-20-000020 June 1944 | 000000001944-08-02-00002 August 1944 | Reefed off Miami, Florida, 1976 | 
| SS Oakley Wood | Oakley Wood | 2650 | standard | 000000001944-05-19-000019 May 1944 | 000000001944-06-19-000019 June 1944 | Sold private 1947, wrecked and abandoned 1967 | 
| SS Ole E. Rolvaag | Ole Edvart Rølvaag | 1574 | standard | 000000001943-05-22-000022 May 1943 | 000000001943-06-13-000013 June 1943 | Scrapped 1971 | 
| SS Oliver Ellsworth | Oliver Ellsworth | 42 | standard | 000000001942-03-31-000031 March 1942 | 000000001942-06-04-00004 June 1942 | Torpedoed and scuttled in the Greenland Sea 1942 | 
| SS Oliver Evans | Oliver Evans | 1109 | standard | 000000001943-04-04-00004 April 1943 | 000000001943-05-02-00002 May 1943 | Scrapped 1959 | 
| SS Oliver Hazard Perry | Oliver Hazard Perry | 278 | standard | 000000001941-09-15-000015 September 1941 | 000000001942-02-18-000018 February 1942 | Scrapped 1971 | 
| SS Oliver Kelley | Oliver Kelley | 2725 | standard | 000000001943-12-14-000014 December 1943 | 000000001944-01-04-00004 January 1944 | Scrapped 1959 | 
| SS Oliver Loving | Oliver Loving | 2936 | standard | 000000001944-05-04-00004 May 1944 | 000000001944-06-06-00006 June 1944 | Scrapped 1970 | 
| SS Oliver Wendell Holmes | Oliver Wendell Holmes | 194 | standard | 000000001942-03-26-000026 March 1942 | 000000001942-05-07-00007 May 1942 | Scrapped 1970 | 
| SS Oliver Westover | Oliver Westover | 3109 | standard | 000000001945-03-14-000014 March 1945 | 000000001945-05-03-00003 May 1945 | Sold private 1947, scrapped 1968 | 
| SS Oliver Wolcott | Oliver Wolcott | 256 | standard | 000000001942-05-22-000022 May 1942 | 000000001942-08-07-00007 August 1942 | Scrapped 1961 | 
| SS Omar E. Chapman | Omar E. Chapman | 2193 | standard | 000000001943-09-01-00001 September 1943 | 000000001943-10-21-000021 October 1943 | Scrapped 1972 | 
| SS Opie Read | Opie Read | 1929 | tanker | 000000001943-10-19-000019 October 1943 | 000000001943-12-03-00003 December 1943 | To U.S. Navy as Panda (IX-125), sold private 1948, scrapped 1968 | 
| SS Ora Ellis | Ora Ellis | 3148 | boxed aircraft transport | 000000001945-07-23-000023 July 1945 | 000000001945-09-26-000026 September 1945 | Sold private 1947, sunk 1960 | 
| SS Oran M. Roberts | Oran M. Roberts | 1940 | standard | 000000001943-06-04-00004 June 1943 | 000000001943-07-15-000015 July 1943 | Reefed off Alabama 1974 | 
| SS Orland Loomis | Orland Loomis | 1912 | standard | 000000001943-10-21-000021 October 1943 | 000000001943-11-16-000016 November 1943 | Scrapped 1972 | 
| SS Orson D. Munn | Orson Desaix Munn | 1888 | tanker | 000000001943-08-30-000030 August 1943 | 000000001943-09-30-000030 September 1943 | Sold private 1947, wrecked and scrapped 1964 | 
| SS Orville P. Taylor | Orville P. Taylor | 1777 | standard | 000000001943-08-09-00009 August 1943 | 000000001943-09-03-00003 September 1943 | Sold private 1947, scrapped 1967 | 
| SS Oscar Chappell | Oscar Chappell | 1962 | standard | 000000001943-09-29-000029 September 1943 | 000000001943-11-10-000010 November 1943 | Scrapped 1958 | 
| SS Oscar F. Barrett | Oscar F. Barrett | 1885 | tanker | 000000001943-08-16-000016 August 1943 | 000000001943-09-18-000018 September 1943 | Sold private 1947, scrapped 1971 | 
| SS Oscar S. Straus | Oscar S. Straus | 1918 | tanker | 000000001943-08-16-000016 August 1943 | 000000001943-10-04-00004 October 1943 | Sold private 1947, scrapped 1970 | 
| SS Oscar Underwood | Oscar Underwood | 2238 | standard | 000000001944-01-14-000014 January 1944 | 000000001944-02-08-00008 February 1944 | Sold private 1947, scrapped 1972 | 
| SS Otis E. Hall | Otis E. Hall | 2973 | standard | 000000001944-10-07-00007 October 1944 | 000000001944-11-13-000013 November 1944 | Scrapped 1968 | 
| SS Otis Skinner | Otis Skinner | 2130 | standard | 000000001943-11-29-000029 November 1943 | 000000001943-12-19-000019 December 1943 | Sold private 1947, scrapped 1967 | 
| SS Otto Mears | Otto Mears | 2157 | standard | 000000001943-09-08-00008 September 1943 | 000000001943-09-26-000026 September 1943 | Sold private 1947, wrecked and scrapped 1967 | 
| SS Ovid Butler | Ovid Butler | 2693 | standard | 000000001944-05-20-000020 May 1944 | 000000001944-06-07-00007 June 1944 | Scrapped 1965 | 
| SS Owen Summers | Owen Summers | 1592 | standard | 000000001943-01-13-000013 January 1943 | 000000001943-02-11-000011 February 1943 | Scrapped 1961 | 
| SS Owen Wister | Owen Wister | 1216 | standard | 000000001943-11-02-00002 November 1943 | 000000001943-12-14-000014 December 1943 | Scrapped 1964 | 
| SS P. T. Barnum | P. T. Barnum | 1655 | standard | 000000001943-04-23-000023 April 1943 | 000000001943-05-14-000014 May 1943 | Scrapped 1961 | 
| SS Paine Wingate | Paine Wingate | 79 | standard | 000000001942-01-31-000031 January 1942 | 000000001942-04-21-000021 April 1942 | Scrapped 1973 | 
| USS Palawan (ARG-10) | Palawan | 2668 | standard | 000000001944-07-10-000010 July 1944 | 000000001944-08-12-000012 August 1944 | To U.S. Navy as  ARG-10, reefed off Redondo Beach CA 1977 | 
| SS Park Benjamin | Park Benjamin | 3008 | standard | 000000001944-01-29-000029 January 1944 | 000000001944-03-19-000019 March 1944 | Scrapped 1959 | 
| SS Park Holland | Park Holland | 823 | standard | 000000001943-07-30-000030 July 1943 | 000000001943-09-14-000014 September 1943 | Caught fire and destroyed 1947 | 
| SS Pat Harrison | Pat Harrison | 143 | standard | 000000001942-11-08-00008 November 1942 | 000000001942-12-24-000024 December 1942 | Mined off Gibraltar 1943, declared total loss, scrapped 1951 | 
| SS Patrick B. Whalen | Patrick B. Whalen | 2404 | standard | 000000001945-01-29-000029 January 1945 | 000000001945-03-15-000015 March 1945 | Sold private 1947, scrapped 1967 | 
| SS Patrick C. Boyle | Patrick C. Boyle | 1786 | standard | 000000001943-08-22-000022 August 1943 | 000000001943-09-15-000015 September 1943 | Scrapped 1960 | 
| SS Patrick H. Morrissey | Patrick H. Morrissey | 1507 | standard | 000000001943-10-23-000023 October 1943 | 000000001943-12-09-00009 December 1943 | Sold private 1947, scrapped 1967 | 
| SS Patrick Henry | Patrick Henry | 14 | standard | 000000001941-04-30-000030 April 1941 | 000000001941-09-27-000027 September 1941 | Scrapped 1958 | 
| SS Patrick S. Mahoney | Patrick S. Mahoney | 2400 | standard | 000000001944-12-30-000030 December 1944 | 000000001945-02-10-000010 February 1945 | Scrapped 1960 | 
| SS Paul Buck | Paul Buck | 3084 | standard | 000000001944-11-04-00004 November 1944 | 000000001944-12-17-000017 December 1944 | Scrapped 1966 | 
| SS Paul Bunyan | Paul Bunyan | 2966 | standard | 000000001944-09-05-00005 September 1944 | 000000001944-10-17-000017 October 1944 | Scrapped 1971 | 
| SS Paul Chandler | Paul Chandler | 2230 | standard | 000000001943-08-31-000031 August 1943 | 000000001943-09-24-000024 September 1943 | Sold private 1947, scrapped 1971 | 
| SS Paul David Jones | Paul David Jones | 2977 | standard | 000000001944-10-20-000020 October 1944 | 000000001944-11-24-000024 November 1944 | Scrapped 1967 | 
| SS Paul Dunbar | Paul Dunbar | 1897 | tanker | 000000001943-09-18-000018 September 1943 | 000000001943-10-19-000019 October 1943 | To Russia 1944 as Byelgorod, returned 1946, later Morris Hess, Palatiani, Andros Pearl, Ilissos, Elena and Orient Importer, scrapped 1969 | 
| SS Paul Hamilton | Paul Hamilton | 227 | standard | 000000001942-08-30-000030 August 1942 | 000000001942-10-20-000020 October 1942 | Torpedoed and lost off Algiers 1944 | 
| SS Paul Hamilton Hayne | Paul Hamilton Hayne | 865 | standard | 000000001942-10-15-000015 October 1942 | 000000001942-11-24-000024 November 1942 | Sold private 1947, scrapped 1967 | 
| SS Paul Revere | Paul Revere | 68 | standard | 000000001941-07-10-000010 July 1941 | 000000001941-12-21-000021 December 1941 | Scrapped 1965 | 
| SS Paul Tulane | Paul Tulane | 1923 | tanker | 000000001943-09-28-000028 September 1943 | 000000001943-11-06-00006 November 1943 | To U.S. Navy as Kangaroo (IX-121), sold private 1948, scrapped 1969 | 
| SS Pearl Harbor | Pearl Harbor | 927 | standard | 000000001942-11-10-000010 November 1942 | 000000001942-12-07-00007 December 1942 | Scrapped 1962 | 
| SS Pedro Menendez | Pedro Menendez | 2313 | standard | 000000001944-06-24-000024 June 1944 | 000000001944-07-31-000031 July 1944 | Scrapped 1966 | 
| SS Peleg Wadsworth | Peleg Wadsworth | 2203 | standard | 000000001943-11-01-00001 November 1943 | 000000001943-12-12-000012 December 1943 | Sold private 1947, renamed Samtampa, wrecked on Tusker Rock and scrapped 1947 | 
| SS Penelope Barker | Penelope Barker | 868 | standard | 000000001942-10-28-000028 October 1942 | 000000001942-12-01-00001 December 1942 | Torpedoed and lost in the Barents Sea 1944 | 
| SS Percy D. Haughton | Percy D. Haughton | 2199 | standard | 000000001943-10-11-000011 October 1943 | 000000001943-11-24-000024 November 1943 | Scrapped 1962 | 
| SS Percy E. Foxworth | Percy E. Foxworth | 2747 | standard | 000000001944-01-19-000019 January 1944 | 000000001944-02-08-00008 February 1944 | Scrapped 1969 | 
| SS Pere Marquette | Pere Marquette | 452 | standard | 000000001942-12-12-000012 December 1942 | 000000001943-01-14-000014 January 1943 | Scrapped 1971 | 
| SS Peregrine White | Peregrine White | 824 | standard | 000000001943-07-30-000030 July 1943 | 000000001943-09-14-000014 September 1943 | Sold private 1947, scrapped 1970 | 
| SS Peter Cartwright | Peter Cartwright | 632 | standard | 000000001942-07-03-00003 July 1942 | 000000001942-08-15-000015 August 1942 | Scrapped 1961 | 
| SS Peter Cooper Hewitt | Peter Cooper Hewitt | 2114 | standard | 000000001943-09-30-000030 September 1943 | 000000001943-10-22-000022 October 1943 | Sold private 1947, scrapped 1967 | 
| SS Peter Cooper | Peter Cooper | 1769 | standard | 000000001943-07-24-000024 July 1943 | 000000001943-08-25-000025 August 1943 | Sold private 1947, scrapped 1971 | 
| SS Peter De Smet | Pierre-Jean De Smet | 2070 | standard | 000000001943-08-05-00005 August 1943 | 000000001943-08-24-000024 August 1943 | Scrapped 1968 | 
| SS Peter Donahue | Peter Donahue | 1234 | standard | 000000001942-12-21-000021 December 1942 | 000000001943-02-12-000012 February 1943 | Scrapped 1963 | 
| SS Peter H. Burnett | Peter H. Burnett | 300 | standard | 000000001942-06-29-000029 June 1942 | 000000001942-08-10-000010 August 1942 | Torpedoed near the Cook Islands 1943, repaired, to U.S. Navy as USS Peter H. Burnett (IX-104), scrapped 1959 | 
| SS Peter J. McGuire | Peter J. McGuire | 325 | standard | 000000001942-07-22-000022 July 1942 | 000000001942-09-07-00007 September 1942 | Scrapped 1968 | 
| SS Peter Lassen | Peter Lassen | 2243 | standard | 000000001944-03-11-000011 March 1944 | 000000001944-04-07-00007 April 1944 | Sold private 1947, scrapped 1968 | 
| SS Peter Minuit | Peter Minuit | 35 | standard | 000000001942-01-28-000028 January 1942 | 000000001942-04-23-000023 April 1942 | Scrapped 1963 | 
| SS Peter Moran | Peter Moran | 2584 | standard | 000000001944-01-10-000010 January 1944 | 000000001944-01-28-000028 January 1944 | Scrapped 1961 | 
| SS Peter Silvester | Peter Silvester | 288 | standard | 000000001942-03-31-000031 March 1942 | 000000001942-05-27-000027 May 1942 | Torpedoed by U-862 and lost in the Indian Ocean 6 February 1945 | 
| SS Peter Skene Ogden | Peter Skene Ogden | 595 | standard | 000000001942-10-18-000018 October 1942 | 000000001942-11-14-000014 November 1942 | Torpedoed off Algeria 1944, scrapped | 
| SS Peter Stuyvesant | Peter Stuyvesant | 1212 | standard | 000000001943-09-27-000027 September 1943 | 000000001943-11-16-000016 November 1943 | To U.S. Navy as Crux (AK-115), scrapped 1962 | 
| SS Peter Trimble Rowe | Peter Trimble Rowe | 2181 | standard | 000000001943-10-16-000016 October 1943 | 000000001943-11-04-00004 November 1943 | Scrapped 1962 | 
| SS Peter V. Daniel | Peter V. Daniel | 661 | standard | 000000001942-09-25-000025 September 1942 | 000000001942-10-28-000028 October 1942 | Scrapped 1963 | 
| SS Peter White | Peter White | 2256 | standard | 000000001943-10-04-00004 October 1943 | 000000001943-10-23-000023 October 1943 | Mined off Leyte 1945, scrapped 1949 | 
| SS Peter Zenger | Peter Zenger | 1527 | standard | 000000001943-03-31-000031 March 1943 | 000000001943-07-04-00004 July 1943 | Scrapped 1966 | 
| SS Philander C. Knox | Philander C. Knox | 1028 | standard | 000000001943-01-09-00009 January 1943 | 000000001943-02-24-000024 February 1943 | Scrapped 1961 | 
| SS Philip C. Shera | Philip C. Shera | 2545 | standard | 000000001943-11-13-000013 November 1943 | 000000001943-12-11-000011 December 1943 | Sold private 1947, scrapped 1969 | 
| SS Philip Doddridge | Philip Doddridge | 1971 | standard | 000000001943-04-18-000018 April 1943 | 000000001943-05-13-000013 May 1943 | Sold private 1947, scrapped 1969 | 
| SS Philip F. Thomas | Philip F. Thomas | 1781 | standard | 000000001943-08-13-000013 August 1943 | 000000001943-09-07-00007 September 1943 | Sold private 1947, sunk 1956 | 
| SS Philip H. Sheridan | Philip H. Sheridan | 326 | standard | 000000001942-07-24-000024 July 1942 | 000000001942-09-09-00009 September 1942 | Scrapped 1969 | 
| SS Philip Kearny | Philip Kearny | 1227 | standard | 000000001942-08-10-000010 August 1942 | 000000001942-12-07-00007 December 1942 | Scrapped 1969 | 
| SS Philip Livingston | Philip Livingston | 177 | standard | 000000001941-07-18-000018 July 1941 | 000000001941-12-21-000021 December 1941 | Sold private 1947, scrapped 1969 | 
| SS Philip P. Barbour | Philip P. Barbour | 660 | standard | 000000001942-09-23-000023 September 1942 | 000000001942-10-26-000026 October 1942 | Scrapped 1971 | 
| SS Philip Schuyler | Philip Schuyler | 181 | standard | 000000001941-11-19-000019 November 1941 | 000000001942-02-15-000015 February 1942 | Scrapped 1967 | 
| SS Phineas Banning | Phineas Banning | 711 | standard | 000000001943-01-12-000012 January 1943 | 000000001943-02-09-00009 February 1943 | Scrapped 1967 | 
| SS Phoebe A. Hearst | Phoebe A. Hearst | 694 | standard | 000000001942-12-09-00009 December 1942 | 000000001943-01-07-00007 January 1943 | Torpedoed and lost near Fiji 1943 | 
| SS Pierce Butler | Pierce Butler | 306 | standard | 000000001942-06-27-000027 June 1942 | 000000001942-08-18-000018 August 1942 | Torpedoed and lost in the Indian Ocean 1942 | 
| SS Pierre Gibault | Pierre Gibault | 1608 | standard | 000000001943-02-22-000022 February 1943 | 000000001943-03-15-000015 March 1943 | Mined off Rhodes 1945, scrapped 1949 | 
| SS Pierre Laclede | Pierre Laclede | 507 | standard | 000000001942-10-29-000029 October 1942 | 000000001942-11-29-000029 November 1942 | Scrapped 1970 | 
| SS Pierre L'Enfant | Pierre L'Enfant | 1001 | standard | 000000001943-05-17-000017 May 1943 | 000000001943-06-11-000011 June 1943 | Sold private 1947, wrecked and abandoned 1970 | 
| SS Pierre S. Dupont | Pierre S. Dupont | 567 | standard | 000000001942-08-01-00001 August 1942 | 000000001942-08-27-000027 August 1942 | Scrapped 1971 | 
| SS Pierre Soule | Pierre Soule | 320 | standard | 000000001942-12-15-000015 December 1942 | 000000001943-01-30-000030 January 1943 | Torpedoed off Palermo 1943, repaired, scrapped 1969 | 
| SS Pio Pico | Pio Pico | 696 | standard | 000000001942-12-13-000013 December 1942 | 000000001943-01-11-000011 January 1943 | Scrapped 1960 | 
| SS Pittsburgh Seam | Pittsburgh coal seam | 2862 | collier | 000000001945-04-30-000030 April 1945 | 000000001945-07-11-000011 July 1945 | Sold private 1947, disposition unknown | 
| SS Pleasant Armstrong | Pleasant M. Armstrong | 2022 | standard | 000000001943-05-10-000010 May 1943 | 000000001943-05-30-000030 May 1943 | To Russia 1943 as Vladivostock, later Uelen, scrapped 1976 | 
| SS Pocahontas | Pocahontas | 871 | standard | 000000001942-11-11-000011 November 1942 | 000000001942-12-13-000013 December 1942 | Scrapped 1960 | 
| SS Pocahontas Seam | Pocahontas Seam | 2853 | collier | 000000001945-03-01-00001 March 1945 | 000000001945-04-28-000028 April 1945 | Sold private 1947, scrapped 1972 | 
| SS Ponce De Leon | Ponce De Leon | 1193 | standard | 000000001942-08-15-000015 August 1942 | 000000001943-03-14-000014 March 1943 | Scrapped 1962 | 
| SS Pontus H. Ross | Pontus H. Ross | 2971 | standard | 000000001944-09-29-000029 September 1944 | 000000001944-11-02-00002 November 1944 | Scrapped 1969 | 
| SS Powellton Seam | Powellton Seam | 2855 | collier | 000000001945-03-14-000014 March 1945 | 000000001945-05-08-00008 May 1945 | Sold private 1947, scrapped 1963 | 
| SS Prince L. Campbell | Prince L. Campbell | 2093 | standard | 000000001943-09-10-000010 September 1943 | 000000001943-09-25-000025 September 1943 | Scrapped 1970 | 
| SS Priscilla Alden | Priscilla Alden | 1813 | standard | 000000001943-10-03-00003 October 1943 | 000000001943-10-25-000025 October 1943 | Sold private 1947, scrapped 1968 | 
| USS Propus (AK-132) | Propus | 2471 | standard | 000000001944-01-31-000031 January 1944 | 000000001944-03-29-000029 March 1944 | To U.S. Navy as AK-132, sold private 1947, burnt 1951, declared total loss but repaired, scrapped 1970 | 
| SS R. C. Brennan | R. C. Brennan | 2017 | standard | 000000001943-05-02-00002 May 1943 | 000000001943-05-21-000021 May 1943 | Scrapped 1960 | 
| SS R. F. Peckham | R. F. Peckham | 2180 | standard | 000000001943-10-14-000014 October 1943 | 000000001943-11-02-00002 November 1943 | Damaged in collision 1945, repaired, sold private 1950, scrapped 1976 | 
| SS R. J. Reynolds | R. J. Reynolds | 2377 | standard | 000000001944-08-19-000019 August 1944 | 000000001944-09-30-000030 September 1944 | Scrapped 1958 | 
| SS R. M. Williamson | R. M. Williamson | 1944 | standard | 000000001943-06-25-000025 June 1943 | 000000001943-08-10-000010 August 1943 | Sold private 1947, sunk 1959 | 
| SS R. Ney McNeely | R. Ney McNeely | 1513 | standard | 000000001943-12-09-00009 December 1943 | 000000001944-01-29-000029 January 1944 | To U.S. Navy as YAG 1955, scrapped 1973 | 
| SS R. P. Warner | R. P. Warner | 2062 | standard | 000000001943-07-22-000022 July 1943 | 000000001943-08-10-000010 August 1943 | Sold private 1951, wrecked 1955, repaired, scrapped 1968 | 
| SS R. S. Wilson | R. S. Wilson | 2452 | standard | 000000001943-12-16-000016 December 1943 | 000000001944-02-09-00009 February 1944 | Wrecked 1945, declared total loss, scrapped 1959 | 
| SS R. Walton Moore | R. Walton Moore | 2370 | standard | 000000001944-07-01-00001 July 1944 | 000000001944-08-14-000014 August 1944 | Scrapped 1961 | 
| SS Rachel Jackson | Rachel Jackson | 721 | standard | 000000001943-02-02-00002 February 1943 | 000000001943-03-02-00002 March 1943 | Reefed off Port Mansfield TX 1976 | 
| SS Rafael R. Rivera | Rafael R. Rivera | 2337 | boxed aircraft transport | 000000001944-11-30-000030 November 1944 | 000000001945-01-16-000016 January 1945 | To U.S. Navy 1954 as Skywatcher (YAGR-3), scrapped 1971 | 
| SS Ralph A. Cram | Ralph A. Cram | 1910 | standard | 000000001943-10-18-000018 October 1943 | 000000001943-11-11-000011 November 1943 | Sold private 1947, scrapped 1973 | 
| SS Ralph Barnes | Ralph Barnes | 2570 | standard | 000000001943-11-26-000026 November 1943 | 000000001943-12-10-000010 December 1943 | Sold private 1947, wrecked and abandoned 1961 | 
| SS Ralph Izard | Ralph Izard | 914 | standard | 000000001942-08-02-00002 August 1942 | 000000001942-09-13-000013 September 1942 | Scrapped 1965 | 
| SS Ralph T. O'Neil | Ralph T. O'Neil | 2685 | standard | 000000001944-04-29-000029 April 1944 | 000000001944-05-19-000019 May 1944 | Scrapped 1966 | 
| SS Ralph Waldo Emerson | Ralph Waldo Emerson | 192 | standard | 000000001942-02-26-000026 February 1942 | 000000001942-04-19-000019 April 1942 | Scrapped 1960 | 
| SS Ransom A. Moore | Ransom A. Moore | 2330 | standard | 000000001944-10-18-000018 October 1944 | 000000001944-11-21-000021 November 1944 | Scrapped 1970 | 
| SS Raymond B. Stevens | Raymond B. Stevens | 3016 | standard | 000000001944-03-08-00008 March 1944 | 000000001944-04-19-000019 April 1944 | Scrapped 1961 | 
| SS Raymond Clapper | Raymond Clapper | 2479 | standard | 000000001944-04-17-000017 April 1944 | 000000001944-05-22-000022 May 1944 | Sold private, sunk 1966 | 
| SS Raymond T. Baker | Raymond T. Baker | 2236 | standard | 000000001943-12-22-000022 December 1943 | 000000001944-01-19-000019 January 1944 | Sold private 1947, scrapped 1971 | 
| SS Raymond V. Ingersoll | Raymond V. Ingersoll | 2317 | standard | 000000001944-07-27-000027 July 1944 | 000000001944-08-31-000031 August 1944 | Sold private 1947, converted to a floating warehouse in Poland 1976, active | 
| SS Raymond Van Brogan | Raymond Van Brogan | 2339 | boxed aircraft transport | 000000001944-12-14-000014 December 1944 | 000000001945-01-27-000027 January 1945 | To U.S. Navy 1954 as Vigil (YAGR-12), scrapped 1971 | 
| SS Rebecca Boone | Rebecca Boone | 2425 | standard | 000000001943-11-14-000014 November 1943 | 000000001943-12-21-000021 December 1943 | Sold private 1947, scrapped 1972 | 
| SS Rebecca Lukens | Rebecca Lukens | 1551 | standard | 000000001944-01-07-00007 January 1944 | 000000001944-03-04-00004 March 1944 | To U.S. Army as aircraft repair unit Major General Herbert A. Dargue 1944, scrapped 1970 | 
| SS Redfield Proctor | Redfield Proctor | 439 | standard | 000000001942-11-03-00003 November 1942 | 000000001942-12-12-000012 December 1942 | To U.S. Navy as Celeno (AK-76), bombed off Guadalcanal 1943, repaired, scrapped 1961 | 
| SS Redstone Seam | Redstone Seam | 2844 | collier | 000000001945-01-25-000025 January 1945 | 000000001945-03-20-000020 March 1945 | Sold private 1947, scrapped 1965 | 
| SS Reginald A. Fessenden | Reginald A. Fessenden | 1745 | tanker | 000000001943-07-08-00008 July 1943 | 000000001943-08-26-000026 August 1943 | Sold private 1948, declared total loss 1964 | 
| SS Reinhold Richter | Reinhold Richter | 2105 | standard | 000000001943-08-29-000029 August 1943 | 000000001943-09-23-000023 September 1943 | Sold private 1947, scrapped 1970 | 
| SS Renald Fernald | Renald Fernald | 2215 | standard | 000000001943-12-04-00004 December 1943 | 000000001944-01-22-000022 January 1944 | Sold private 1947, wrecked and scrapped 1963 | 
| SS Reverdy Johnson | Reverdy Johnson | 51 | standard | 000000001942-05-15-000015 May 1942 | 000000001942-07-10-000010 July 1942 | Scrapped 1967 | 
| SS Richard A. Van Pelt | Richard A. Van Pelt | 2401 | standard | 000000001945-01-09-00009 January 1945 | 000000001945-02-17-000017 February 1945 | Sold private 1947, scrapped 1969 | 
| SS Richard B. Moore | Richard B. Moore | 2705 | standard | 000000001943-11-12-000012 November 1943 | 000000001943-11-30-000030 November 1943 | Sold private 1947, scrapped 1972 | 
| SS Richard Bassett | Richard Bassett | 41 | standard | 000000001942-03-18-000018 March 1942 | 000000001942-05-22-000022 May 1942 | Sold private 1947, scrapped 1962 | 
| SS Richard Bland | Richard Bland | 28 | standard | 000000001941-10-29-000029 October 1941 | 000000001942-02-28-000028 February 1942 | Torpedoed and lost in the Arctic 1942 | 
| SS Richard Caswell | Richard Caswell | 870 | standard | 000000001942-11-06-00006 November 1942 | 000000001942-12-10-000010 December 1942 | Torpedoed and lost off Paranagua 1943 | 
| SS Richard Coulter | Richard Coulter | 2878 | standard | 000000001944-08-14-000014 August 1944 | 000000001944-09-22-000022 September 1944 | Scrapped 1960 | 
| SS Richard D. Lyons | Richard D. Lyons | 3099 | standard | 000000001945-01-18-000018 January 1945 | 000000001945-03-13-000013 March 1945 | Sold private 1947, scrapped 1968 | 
| SS Richard D. Spaight | Richard D. Spaight | 163 | standard | 000000001942-07-08-00008 July 1942 | 000000001942-09-11-000011 September 1942 | Torpedoed and lost off Durban 1943 | 
| SS Richard H. Alvey | Richard H. Alvey | 53 | standard | 000000001942-05-24-000024 May 1942 | 000000001942-07-15-000015 July 1942 | Scrapped 1961 | 
| SS Richard Halliburton | Richard Halliburton | 2323 | standard | 000000001944-08-31-000031 August 1944 | 000000001944-10-10-000010 October 1944 | Scrapped 1961 | 
| SS Richard Harding Davis | Richard Harding Davis | 1630 | standard | 000000001943-04-03-00003 April 1943 | 000000001943-04-23-000023 April 1943 | Scrapped 1967 | 
| SS Richard Henderson | Richard Henderson | 458 | standard | 000000001942-12-29-000029 December 1942 | 000000001943-01-31-000031 January 1943 | Torpedoed and lost off Sardinia 1943 | 
| SS Richard Henry Dana | Richard Henry Dana, Jr. | 294 | standard | 000000001942-05-27-000027 May 1942 | 000000001942-07-12-000012 July 1942 | Sold private 1947, converted to a floating wharf | 
| SS Richard Henry Lee | Richard Henry Lee | 18 | standard | 000000001941-07-15-000015 July 1941 | 000000001941-12-06-00006 December 1941 | Scrapped 1965 | 
| SS Richard Hovey | Richard Hovey | 338 | standard | 000000001942-12-27-000027 December 1942 | 000000001943-03-14-000014 March 1943 | Torpedoed and lost in the Indian Ocean 1944 | 
| SS Richard J. Cleveland | Richard J. Cleveland | 1883 | tanker | 000000001943-08-11-000011 August 1943 | 000000001943-09-15-000015 September 1943 | Sold private 1947, scrapped 1968 | 
| SS Richard J. Hopkins | Richard J. Hopkins | 2963 | standard | 000000001944-08-26-000026 August 1944 | 000000001944-10-02-00002 October 1944 | Sold private 1947, sunk 1968 | 
| SS Richard J. Oglesby | Richard J. Oglesby | 2526 | standard | 000000001943-10-27-000027 October 1943 | 000000001943-11-15-000015 November 1943 | Scrapped 1958 | 
| SS Richard Jordan Gatling | Richard Jordan Gatling | 419 | standard | 000000001942-08-28-000028 August 1942 | 000000001942-10-14-000014 October 1942 | Scrapped 1969 | 
| SS Richard K. Call | Richard K. Call | 2473 | standard | 000000001944-02-21-000021 February 1944 | 000000001944-04-15-000015 April 1944 | Scrapped 1970 | 
| SS Richard M. Johnson | Richard M. Johnson | 1049 | standard | 000000001943-04-25-000025 April 1943 | 000000001943-06-05-00005 June 1943 | Scrapped 1973 | 
| SS Richard Mansfield | Richard Mansfield | 608 | standard | 000000001942-11-18-000018 November 1942 | 000000001942-12-13-000013 December 1942 | Scrapped 1959 | 
| SS Richard March Hoe | Richard March Hoe | 426 | standard | 000000001942-09-20-000020 September 1942 | 000000001942-10-30-000030 October 1942 | To U.S. Navy as Prince Georges (AP-165), scrapped 1969 | 
| SS Richard Moczkowski | Richard Moczkowski | 1731 | standard | 000000001943-07-31-000031 July 1943 | 000000001943-08-22-000022 August 1943 | Scrapped 1966 | 
| SS Richard Montgomery | Richard Montgomery | 1199 | standard | 000000001943-03-15-000015 March 1943 | 000000001943-06-15-000015 June 1943 | Grounded in the Thames Estuary 1944, declared total loss. | 
| SS Richard O'Brien | Richard O'Brien | 2925 | standard | 000000001944-03-15-000015 March 1944 | 000000001944-04-25-000025 April 1944 | To U.S. Army 1944 as aircraft repair unit Brigadier General Asa N. Duncan, scrapped 1972 | 
| SS Richard Olney | Richard Olney | 1026 | standard | 000000001942-12-13-000013 December 1942 | 000000001943-01-22-000022 January 1943 | Mined off Tunisia 1943, TL, scrapped 1948 | 
| SS Robert R. Randall | Robert R. Randall | 2383 | standard | 000000001944-10-02-00002 October 1944 | 000000001944-11-04-00004 November 1944 | Scrapped 1964 | 
| SS Richard Rush | Richard Rush | 621 | standard | 000000001942-12-17-000017 December 1942 | 000000001943-01-11-000011 January 1943 | Scrapped 1961 | 
| SS Richard S. Ewell | Richard S. Ewell | 840 | standard | 000000001943-02-11-000011 February 1943 | 000000001943-03-29-000029 March 1943 | Scrapped 1965 | 
| SS Richard Stockton | Richard Stockton | 261 | standard | 000000001942-06-21-000021 June 1942 | 000000001942-08-17-000017 August 1942 | To Belgium as Belgian Loyalty 1945, scrapped 1972 | 
| SS Richard Upjohn | Richard Upjohn | 2864 | standard | 000000001944-04-15-000015 April 1944 | 000000001944-06-08-00008 June 1944 | Reefed off Horn Island MS, 1976 | 
| SS Richard V. Oulahan | Richard V. Oulahan | 2297 | standard | 000000001944-02-26-000026 February 1944 | 000000001944-04-11-000011 April 1944 | Wrecked Okinawa 1945, scrapped | 
| SS Richard Yates | Richard Yates | 454 | standard | 000000001942-12-18-000018 December 1942 | 000000001943-01-22-000022 January 1943 | Scrapped 1971 | 
| SS Richmond Mumford Pearson | Richmond Mumford Pearson | 316 | standard | 000000001942-08-31-000031 August 1942 | 000000001942-10-27-000027 October 1942 | Scrapped 1963 | 
| SS Richmond P. Hobson | Richmond P. Hobson | 1994 | standard | 000000001943-06-25-000025 June 1943 | 000000001943-07-17-000017 July 1943 | Sold private 1947, wrecked and sunk 1963 | 
| SS Ring Lardner | Ring Lardner | 1701 | standard | 000000001943-07-13-000013 July 1943 | 000000001943-08-07-00007 August 1943 | Scrapped 1959 | 
| SS Risden Tyler Bennett | Risden Tyler Bennett | 2870 | standard | 000000001944-06-12-000012 June 1944 | 000000001944-07-22-000022 July 1944 | Scrapped 1963 | 
| SS Robert B. Forbes | Robert Bennet Forbes | 3056 | standard | 000000001944-07-31-000031 July 1944 | 000000001944-09-18-000018 September 1944 | Scrapped 1965 | 
| SS Robert Bacon | Robert Bacon | 1027 | standard | 000000001943-01-04-00004 January 1943 | 000000001943-02-12-000012 February 1943 | Torpedoed and lost off Mozambique, 1943 | 
| SS Robert Battey | Robert Battey | 1506 | standard | 000000001943-10-08-00008 October 1943 | 000000001943-11-30-000030 November 1943 | Wrecked Mindanao 1945, refloated, disposition unknown | 
| SS Robert C. Grier | Robert C. Grier | 663 | standard | 000000001942-09-29-000029 September 1942 | 000000001942-10-31-000031 October 1942 | Scrapped 1966 | 
| SS Robert D. Carey | Robert D. Carey | 2769 | standard | 000000001944-02-24-000024 February 1944 | 000000001944-03-14-000014 March 1944 | Sold private 1947, scrapped 1969 | 
| SS Robert Dale Owen | Robert Dale Owen | 1974 | standard | 000000001943-04-26-000026 April 1943 | 000000001943-05-21-000021 May 1943 | Sold private 1947, mined off Rijeka and sunk, 1947 | 
| SS Robert E. Clarkson | Robert E. Clarkson | 2956 | standard | 000000001944-07-26-000026 July 1944 | 000000001944-09-02-00002 September 1944 | Scrapped 1965 | 
| SS Robert E. Peary | Robert E. Peary | 440 | standard | 000000001942-11-08-00008 November 1942 | 000000001942-11-12-000012 November 1942 | Scrapped 1963 | 
| SS Robert Eden | Robert Eden | 1015 | standard | 000000001943-06-10-000010 June 1943 | 000000001943-07-18-000018 July 1943 | Scrapped 1964 | 
| SS Robert Ellis Lewis | Robert Ellis Lewis | 2603 | standard | 000000001944-02-02-00002 February 1944 | 000000001944-03-07-00007 March 1944 | Scrapped 1970 | 
| SS Robert Erskine | Robert Erskine | 1009 | standard | 000000001943-05-31-000031 May 1943 | 000000001943-06-29-000029 June 1943 | Wrecked in Bizerta 1944, scrapped 1948 | 
| SS Robert F. Broussard | Robert F. Broussard | 2805 | standard | 000000001944-07-08-00008 July 1944 | 000000001944-08-17-000017 August 1944 | Scrapped 1965 | 
| SS Robert F. Burns | Robert F. Burns | 3146 | boxed aircraft transport | 000000001945-06-30-000030 June 1945 | 000000001945-08-28-000028 August 1945 | Scrapped 1968 | 
| SS Robert F. Hoke | Robert F. Hoke | 1968 | standard | 000000001943-04-10-000010 April 1943 | 000000001943-05-04-00004 May 1943 | Torpedoed in the Arabian Sea 1943, refloated and repaired, RN training ship in Bombay 1945, scrapped 1949 | 
| SS Robert F. Stockton | Robert F. Stockton | 296 | standard | 000000001942-06-19-000019 June 1942 | 000000001942-07-29-000029 July 1942 | To Alabama State Docks, scrapped | 
| SS Robert Fechner | Robert Fechner | 1066 | standard | 000000001943-09-06-00006 September 1943 | 000000001943-10-28-000028 October 1943 | Sold private 1947, scrapped 1966 | 
| SS Robert Fulton | Robert Fulton | 230 | standard | 000000001941-09-20-000020 September 1941 | 000000001942-01-10-000010 January 1942 | Scrapped 1969 | 
| SS Robert G. Cousins | Robert G. Cousins | 2719 | standard | 000000001943-12-05-00005 December 1943 | 000000001943-12-23-000023 December 1943 | Sold private 1947, scrapped 1973 | 
| SS Robert G. Harper | Robert G. Harper | 234 | standard | 000000001942-01-22-000022 January 1942 | 000000001942-03-22-000022 March 1942 | Sold private 1947, scrapped 1970 | 
| SS Robert G. Ingersoll | Robert G. Ingersoll | 1855 | standard | 000000001943-06-24-000024 June 1943 | 000000001943-07-18-000018 July 1943 | Scrapped 1961 | 
| SS Robert Gray | Robert Gray | 173 | standard | 000000001941-05-31-000031 May 1941 | 000000001941-11-16-000016 November 1941 | Torpedoed and lost in the North Atlantic 1943 | 
| SS Robert H. Harrison | Robert H. Harrison | 498 | standard | 000000001942-09-07-00007 September 1942 | 000000001942-10-17-000017 October 1942 | Scrapped 1966 | 
| SS Robert Henri | Robert Henri | 2913 | standard | 000000001944-01-06-00006 January 1944 | 000000001944-02-22-000022 February 1944 | Scrapped 1958 | 
| SS Robert Howe | Robert Howe | 879 | standard | 000000001942-12-10-000010 December 1942 | 000000001943-01-13-000013 January 1943 | Scrapped 1971 | 
| SS Robert J. Banks | Robert J. Banks | 2392 | standard | 000000001944-11-21-000021 November 1944 | 000000001944-12-20-000020 December 1944 | Sold private 1947, scrapped 1967 | 
| SS Robert J. Collier | Robert J. Collier | 1003 | standard | 000000001943-05-19-000019 May 1943 | 000000001943-06-13-000013 June 1943 | Wrecked and scrapped 1946 | 
| SS Robert J. Walker | Robert J. Walker | 629 | standard | 000000001943-01-05-00005 January 1943 | 000000001943-02-02-00002 February 1943 | Torpedoed and sunk off Moruya, New South Wales on 25 December 1944 | 
| SS Robert Jordan | Robert Jordan | 796 | standard | 000000001943-05-25-000025 May 1943 | 000000001943-07-18-000018 July 1943 | Sold private 1947, burnt 1959, scrapped 1963 | 
| SS Robert L. Hague | Robert L. Hague | 2240 | standard | 000000001944-01-27-000027 January 1944 | 000000001944-02-19-000019 February 1944 | Sold private 1947, scrapped 1968 | 
| SS Robert L. Vann | Robert L. Vann | 2189 | standard | 000000001943-08-14-000014 August 1943 | 000000001943-10-10-000010 October 1943 | Mined and lost off Ostend 1945 | 
| SS Robert Lansing | Robert Lansing | 1531 | standard | 000000001943-06-03-00003 June 1943 | 000000001943-07-17-000017 July 1943 | Scrapped 1968 | 
| SS Robert Louis Stevenson | Robert Louis Stevenson | 2184 | standard | 000000001943-10-21-000021 October 1943 | 000000001943-11-09-00009 November 1943 | Defied scuttling and sunk 1967 | 
| SS Robert Lowry | Robert Lowry | 1044 | standard | 000000001943-04-07-00007 April 1943 | 000000001943-05-10-000010 May 1943 | Scrapped 1969 | 
| SS Robert Lucas | Robert Lucas | 1560 | standard | 000000001943-05-16-000016 May 1943 | 000000001943-06-10-000010 June 1943 | Scrapped 1972 | 
| SS Robert M. Lafollette | Robert M. Lafollette | 1024 | standard | 000000001942-11-27-000027 November 1942 | 000000001943-01-10-000010 January 1943 | Sold private 1947, damaged in the India/Pakistan war 1971, scrapped 1972 | 
| SS Robert M. T. Hunter | Robert M. T. Hunter | 348 | standard | 000000001942-12-11-000011 December 1942 | 000000001943-03-28-000028 March 1943 | Scrapped 1971 | 
| SS Robert Mills | Robert Mills | 2498 | standard | 000000001944-08-30-000030 August 1944 | 000000001944-10-05-00005 October 1944 | Reefed off Mobile Bay AL 1975 | 
| SS Robert Morris | Robert Morris | 70 | standard | 000000001941-07-23-000023 July 1941 | 000000001942-01-28-000028 January 1942 | Scrapped 1972 | 
| SS Robert Neighbors | Robert Neighbors | 2968 | standard | 000000001944-09-15-000015 September 1944 | 000000001944-10-20-000020 October 1944 | Scrapped 1970 | 
| SS Robert Newell | Robert Newell | 2006 | standard | 000000001943-04-13-000013 April 1943 | 000000001943-05-02-00002 May 1943 | Scrapped 1961 | 
| SS Robert Parrot | Robert Parrot | 2886 | standard | 000000001944-10-06-00006 October 1944 | 000000001944-11-16-000016 November 1944 | Scrapped 1968 | 
| SS Robert R. Livingston | Robert R. Livingston | 1516 | standard | 000000001944-01-03-00003 January 1944 | 000000001944-02-21-000021 February 1944 | Scrapped 1962 | 
| SS Robert R. McBurney | Robert R. McBurney | 3062 | standard | 000000001944-08-09-00009 August 1944 | 000000001944-09-22-000022 September 1944 | Scrapped 1962 | 
| SS Robert R. Randall | Robert R. Randall | 2200 | standard | 000000001943-10-11-000011 October 1943 | 000000001943-11-24-000024 November 1943 | Sold private 1947, scrapped 1969 | 
| SS Robert Rogers | Robert Rogers | 797 | standard | 000000001943-05-25-000025 May 1943 | 000000001943-07-18-000018 July 1943 | Scrapped 1972 | 
| SS Robert Rowan | Robert Rowan | 904 | standard | 000000001943-03-05-00005 March 1943 | 000000001943-04-06-00006 April 1943 | Bombed and lost off Sicily 1943, wreck scrapped 1948 | 
| SS Robert S. Abbott | Robert S. Abbott | 2785 | standard | 000000001944-03-23-000023 March 1944 | 000000001944-04-13-000013 April 1944 | To Russia 1944 as Kamenets-Podolsk, scrapped 1979 | 
| SS Robert S. Bean | Robert S. Bean | 2077 | standard | 000000001943-08-17-000017 August 1943 | 000000001943-09-04-00004 September 1943 | Sold private 1947, wrecked and scrapped 1958 | 
| SS Robert S. Lovett | Robert S. Lovett | 2950 | standard | 000000001944-06-28-000028 June 1944 | 000000001944-08-05-00005 August 1944 | Sold private 1947, scrapped 1965 | 
| SS Robert Stuart | Robert Stuart | 706 | standard | 000000001943-01-03-00003 January 1943 | 000000001943-01-31-000031 January 1943 | Scrapped 1961 | 
| SS Robert T. Hill | Robert T. Hill | 1941 | standard | 000000001943-06-09-00009 June 1943 | 000000001943-07-17-000017 July 1943 | Scrapped 1963 | 
| SS Robert T. Lincoln | Robert T. Lincoln | 437 | standard | 000000001942-10-28-000028 October 1942 | 000000001942-12-07-00007 December 1942 | To U.S. Navy as Aludra (AK-72), torpedoed and lost off Guadalcanal 1943 | 
| SS Robert Toombs | Robert Toombs | 347 | standard | 000000001942-11-24-000024 November 1942 | 000000001943-03-19-000019 March 1943 | Scrapped 1959 | 
| SS Robert Treat | Robert Treat | 792 | standard | 000000001943-04-15-000015 April 1943 | 000000001943-06-07-00007 June 1943 | Scrapped 1967 | 
| SS Robert Treat Paine | Robert Treat Paine | 32 | standard | 000000001942-01-06-00006 January 1942 | 000000001942-03-28-000028 March 1942 | Sold private 1947, wrecked and scrapped 1964 | 
| SS Robert Trimble | Robert Trimble | 1493 | standard | 000000001942-08-29-000029 August 1942 | 000000001943-06-21-000021 June 1943 | Sold private 1947, scrapped 1963 | 
| SS Robert W. Bingham | Robert W. Bingham | 2794 | standard | 000000001944-04-06-00006 April 1944 | 000000001944-05-16-000016 May 1944 | To U.S. Army 1944 as aircraft repair unit Brigadier General Clinton W. Russell. Scrapped 1959 | 
| SS Robert W. Hart | Robert W. Hart | 3125 | boxed aircraft transport | 000000001945-05-04-00004 May 1945 | 000000001945-07-10-000010 July 1945 | To U.S. Navy as Georgetown (AG-165) 1962, scrapped 1971 | 
| SS Robert Watchorn | Robert Watchorn | 2941 | standard | 000000001944-05-23-000023 May 1944 | 000000001944-06-27-000027 June 1944 | Sold private 1947, scrapped 1968 | 
| SS Robert Wickliffe | Robert Wickliffe | 1842 | standard | 000000001943-11-18-000018 November 1943 | 000000001943-12-09-00009 December 1943 | Sold private 1947, scrapped 1969 | 
| SS Robert Y. Hayne | Robert Y. Hayne | 1198 | standard | 000000001942-11-02-00002 November 1942 | 000000001943-05-29-000029 May 1943 | Sold private 1947, scrapped 1971 | 
| SS Roda Seam | Roda Seam | 2858 | collier | 000000001945-06-18-000018 June 1945 | 000000001945-08-25-000025 August 1945 | Sold private 1947, scrapped 1972 | 
| SS Roger B. Taney | Roger B. Taney | 17 | standard | 000000001941-06-21-000021 June 1941 | 000000001941-12-06-00006 December 1941 | Torpedoed and lost in the South Atlantic 1943[1] | 
| SS Roger Griswold | Roger Griswold | 1032 | standard | 000000001943-01-20-000020 January 1943 | 000000001943-03-01-00001 March 1943 | Scrapped 1972 | 
| SS Roger Moore | Roger Moore | 903 | standard | 000000001943-02-28-000028 February 1943 | 000000001943-03-31-000031 March 1943 | Scrapped 1971 | 
| SS Roger Sherman | Roger Sherman | 260 | standard | 000000001942-06-15-000015 June 1942 | 000000001942-08-03-00003 August 1942 | Scrapped 1961 | 
| SS Roger Williams | Roger Williams | 224 | standard | 000000001942-06-29-000029 June 1942 | 000000001942-08-30-000030 August 1942 | Sold private 1947, sunk 1965 | 
| SS Ross G. Marvin | Ross Gilmore Marvin | 1834 | standard | 000000001943-11-06-00006 November 1943 | 000000001943-11-29-000029 November 1943 | Sold private 1947, scrapped | 
| SS Roy James Cole | Roy James Cole | 2403 | standard | 000000001945-01-23-000023 January 1945 | 000000001945-02-28-000028 February 1945 | Sold private 1947, scrapped 1970 | 
| SS Roy K. Johnson | Roy K. Johnson | 2841 | standard | 000000001944-12-30-000030 December 1944 | 000000001945-02-07-00007 February 1945 | Sold private 1951, scrapped 1968 | 
| SS Royal S. Copeland | Royal S. Copeland | 1219 | standard | 000000001943-11-24-000024 November 1943 | 000000001944-01-11-000011 January 1944 | Sold private 1947, burnt 1968, scrapped | 
| SS Ruben Dario | Rubén Darío | 2866 | standard | 000000001944-05-01-00001 May 1944 | 000000001944-06-22-000022 June 1944 | Scrapped 1963 | 
| SS Rudolph Kauffmann | Rudolph Kauffmann | 2888 | standard | 000000001944-10-23-000023 October 1944 | 000000001944-11-29-000029 November 1944 | Scrapped 1972 | 
| SS Rufus C. Dawes | Rufus C. Dawes | 1204 | standard | 000000001943-05-31-000031 May 1943 | 000000001943-09-04-00004 September 1943 | Scrapped 1968 | 
| SS Rufus Choate | Rufus Choate | 2931 | standard | 000000001944-04-08-00008 April 1944 | 000000001944-05-17-000017 May 1944 | Scrapped 1971 | 
| SS Rufus E. Foster | Rufus E. Foster | 2451 | standard | 000000001943-12-24-000024 December 1943 | 000000001944-02-17-000017 February 1944 | Sold private 1947, wrecked and scrapped 1960 | 
| SS Rufus King | Rufus King | 280 | standard | 000000001941-10-06-00006 October 1941 | 000000001942-03-11-000011 March 1942 | Wrecked off Moreton Island 1942, sunk as target by RAAF | 
| SS Rufus W. Peckham | Rufus W. Peckham | 940 | standard | 000000001942-12-22-000022 December 1942 | 000000001943-02-13-000013 February 1943 | Sold private 1947, wrecked and sunk 1959 | 
| SS Russell A. Alger | Russell A. Alger | 1754 | standard |  |  | Cancelled | 
| SS Russell H. Chittenden | Russell H. Chittenden | 2564 | standard | 000000001944-01-19-000019 January 1944 | 000000001944-02-12-000012 February 1944 | Wrecked and lost in New Guinea 1945 | 
| SS Russell R. Jones | Russell R. Jones | 2990 | standard | 000000001944-12-15-000015 December 1944 | 000000001945-01-18-000018 January 1945 | Sold private 1947, scrapped 1967 | 
| SS Russell Sage | Russell Sage | 1545 | standard | 000000001943-11-25-000025 November 1943 | 000000001944-01-05-00005 January 1944 | Sold private 1947, wrecked 1967, scrapped |