BAP Abtao
1953 Abtao-class submarine
BAP Abtao (SS-42) is an Abtao-class submarine of the Peruvian Navy. The vessel which was originally named BAP Tiburón ("Shark"), was constructed by the American Electric Boat company in the United States and launched in 1953. The Abtao class were the last submarines constructed by the United States for the export market. The submarine entered service in 1954 and by presidential decree, was renamed Abtao for the battle during the Chincha Islands War.
Armed with six 21-inch (533 mm) torpedo tubes and a 5 in (127 mm)/25 caliber gun, the 243 ft (74.1 m) submarine took part in the rescue of the crew of BAP Pacocha, another submarine that had sunk following a collision with a fishing trawler in August 1988. Abtao was taken out of service in 1999 and converted into a museum ship located in central Callao, Peru. Abtao was the first museum ship in Latin America.
Design and description
The Abtao class were a modified version of the United States World War II Mackerel-class submarine design. Abtao had a surfaced displacement of 825 long tons (838 t) and 1,400 long tons (1,422 t) submerged. It measured 243 ft (74.1 m) long overall with a beam of 22 ft (6.7 m) and a draft of 14 ft (4.3 m).
“BAP Abtao” enters the record as 1953 Abtao-class submarine. Crown Archives preserves that source wording while asking what Abtao, Abtao-class and submarine can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Nov 12, 2025. The linked authority identifier is Q4834615. Authority coordinates are -12.060, -77.151. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1953, 1954, 1988 and 1999.
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