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
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.

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. 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. Decommissioned in 1998 and became a museum ship in 2004.
• 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. Discarded 1990.
• 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. Discarded 1993.