USS Lyndon B. Johnson

Conceptual image.
History
United States
Name: Lyndon B. Johnson
Namesake: U.S. President Lyndon B. Johnson
Awarded: 15 September 2011[1]
Builder: Bath Iron Works
Status: Under construction[2]
General characteristics
Class and type: Zumwalt-class destroyer
Displacement: 14,564 tons[3]
Length: 600 ft (182.9 m)
Beam: 80.7 ft (24.6 m)
Draft: 27.6 ft (8.4 m)
Propulsion: 2 Rolls-Royce Marine Trent-30 gas turbines plus 2 Rolls-Royce RR4500 gas turbine generator sets,[4] 78 MW
Speed: 30.3 knots (56.1 km/h; 34.9 mph)
Complement: 140
Sensors and
processing systems:
  • AN/SPY-3 Multi-Function Radar (MFR) (X-band, scanned array)
  • Volume Search Radar (VSR) (S-band, scanned array)
Armament:
  • 20 × MK 57 VLS modules, with 4 vertical launch cells in each module, 80 cells total. Each cell can hold one or more missiles, depending on the size of the missiles.
  • Evolved Sea Sparrow Missile (ESSM)
  • Tactical Tomahawk Vertical Launch Anti-Submarine Rocket (ASROC)
  • 2 × 155 mm Advanced Gun System
  • 920 × 155 mm total; 600 in automated store + Auxiliary store room with up to 320 rounds (non-automatic) as of April 2005
  • 70-100 LRLAP rounds planned as of 2005 of total
  • 2 × Mk 46 Mod 2 Gun Weapon System
Aircraft carried:
Aviation facilities: Hangar Bay, large Helipad

USS Lyndon B. Johnson (DDG-1002) is to be the third and final ship of the Zumwalt-class destroyer. The contract to build her was awarded to Bath Iron Works located in Bath, Maine, on 15 September 2011. The award, along with funds for the construction of USS Michael Monsoor, was worth US$1.826 billion.[1][5] On 16 April 2012, Secretary of the Navy Ray Mabus announced the ship would be named Lyndon B. Johnson in honor of Lyndon B. Johnson, who served as the 36th President of the United States from 1963 to 1969. DDG-1002 is the 34th ship named by the Navy after a U.S. president.[6]

Lyndon B. Johnson is a Zumwalt-class destroyer, 32 units of which were originally planned, the U.S. Navy eventually reduced this number to three units.[7] Designed as multi-mission ships with an emphasis on land attack and littoral warfare,[8] the class features the tumblehome hull form, reminiscent of ironclad warships.[9] In January 2013 the Navy solicited bids for a steel deckhouse as an option for Lyndon B. Johnson instead of the composite structures of the other ships in the class.[10] This change was made in response to cost overruns for the composite structure, but due to the tight weight margins in the class, required weight savings in other parts of the ship.[11]

In February 2015, the Navy revealed they had begun engineering studies to include an electromagnetic railgun on Lyndon B. Johnson. The Zumwalt class has been identified as more suited to use emerging technologies, like railguns, due to its superior electricity generation capability over previous destroyers and cruisers at 80 megawatts; Lyndon B. Johnson specifically was being studied because it is the latest of the class, while the previous two ships would be less likely to initially field the capability due to the testing schedule. The railgun would likely replace one of the two Advanced Gun Systems.[12] By March 2016, construction had become too far along to install the railgun during building, but it can still be added later.[13]

In September 2015, it was reported that Defense of Department officials were considering terminating funding for Lyndon B. Johnson prior to its completion.[14] Although considered as a cost-saving measure, cancelling the third Zumwalt ship at that stage was likely not possible, and might have ended up actually costing more after paying program shutdown costs and contract termination penalties.[15] By December 2015, the Pentagon had decided in favor of keeping the ship.[16]

References

  1. 1 2 "Lyndon B Johnson (DDG 1002)". Naval Vessel Register. Navy.mil. 12 December 2012. Retrieved 24 November 2014.
  2. ↑ Naval Sea Systems Command Office of Corporate Communications (5 April 2012). "Navy Begins Construction on DDG 1002". United States Navy. Retrieved 15 September 2015.
  3. ↑ "DDG 1000 Flight I Design". Northrop Grumman Ship Systems. 2007.
  4. ↑ Rolls-Royce Marine
  5. ↑ "DDG 1001 and DDG 1002 Ship Construction Contract Award Announced" (PDF) (Press release). Naval Sea Systems Command. 15 September 2011. Retrieved 18 April 2012.
  6. ↑ "Navy Names Zumwalt Class Destroyer USS Lyndon B. Johnson" (Press release). Defense.gov. 16 April 2012. Retrieved 20 April 2012.
  7. ↑ O'Rourke, Ronald (3 February 2012). "Navy DDG-51 and DDG-1000 Destroyer Programs: Background and Issues for Congress" (PDF). Congressional Research Service. Federation of American Scientists. p. 42. Retrieved 20 April 2012.
  8. ↑ "Work on new destroyer begins". United Press International (UPI.com). 11 April 2012. Retrieved 16 April 2012.
  9. ↑ "DDG 1000 Zumwalt Class - Multimission Destroyer, United States of America". Naval-technology.com. Net Resources International. Retrieved 18 April 2012.
  10. ↑ Fabey, Michael (25 January 2013). "U.S. Navy Seeks Alternate Deckhouse For DDG-1002". Aerospace Daily & Defense Report.
  11. ↑ Cavas, Christopher P. (2 August 2013). "Navy Switches from Composite to Steel". DefenseNews.com. Retrieved 15 September 2015.
  12. ↑ LaGrone, Sam (5 February 2015). "Navy Considering Railgun for Third Zumwalt Destroyer". News.USNI.org. Retrieved 15 September 2015.
  13. ↑ Admiral: Shipbuilders won't install railgun on new Navy destroyers - Navytimes, 22 March 2016
  14. ↑ Capaccio, Anthony (12 September 2015). "General Dynamics Destroyer Reviewed by U.S. for Cancellation". Bloomberg News. Retrieved 15 September 2015.
  15. ↑ Cuts To Zumwalt Destroyer Won’t Save Much - Breakingdefense.com, 21 September 2015
  16. ↑ Pentagon Cuts LCS to 40 Ships, 1 Shipbuilder - Militarytimes.com, 17 December 2015

External links



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