Abtao-class submarine

Class overview
Name:	Lobo class (1954–1957) Abtao class (1957–1999)
Builders:	Electric Boat, Groton, Connecticut
Operators:	Peruvian Navy
Built:	1953–1957
In commission:	1954–1999
Completed:	4
Retired:	4
General characteristics [1]
Type:	Submarine
Displacement:	825 long tons (838 t) surfaced 1,400 long tons (1,422 t) submerged
Length:	243 ft (74 m)
Beam:	22 ft (6.7 m)
Draft:	14 ft (4.3 m)
Armament:	6 × 21 in (530 mm) torpedo tubes (4 forward, 2 aft) 1 × 5 in (130 mm)/25 caliber gun

The Abtao class were four submarines of the Peruvian Navy. Initially known as the Lobo class, they were modified U.S. Mackerel class, 825 tons standard, 1,400 tons submerged.^[2][3]

Ships

• Dos de Mayo (1954) Pennant number 6, from 1959 SS-1, from 1960 SS-41. Completed in June 1954, initially known as Lobo, but renamed Dos de Mayo in April 1957.^[2][3] Discarded 1999.
• Abtao (1953) Pennant number 5, from 1959 SS-2, from 1960 SS-42. Completed in February 1954, initially known as Tiburón, but renamed Abtao in April 1957.^[2][3] Decommissioned in 1998 and became a museum ship in 2004.^[1]
• Angamos (1957) Pennant number 7, from 1959 SS-3, from 1960 SS-43. Completed in July 1957, initially known as Atun, but renamed Angamos in April 1957.^[3] Discarded 1990.^[4]
• Iquique (1957) Pennant number 8, from 1959 SS-4, from 1960 SS-44. Completed in October 1957, initially known as Merlin, but renamed Iquique in April 1957.^[3] Discarded 1993.^[4]

References

1. www.hnsa.org/ships/abtao
2. Blackman, Raymond V.B. (1955). Jane's Fighting Ships 1955-56. Jane's Fighting Ships Publishing Co. Ltd.
3. Jane's Fighting Ships 1963-64. Jane's Fighting Ships Publishing Co. Ltd. 1964.
4. Gardiner, Robert; Chumbley, Steven, eds. (1995). Conway's All the World's Fighting Ships 1947-1995. Conways. ISBN 0-85177-605-1.