USS Aspro (SS-309)
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| History | |
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| Builder: | Portsmouth Naval Shipyard, Kittery, Maine |
| Laid down: | 27 December 1942 |
| Launched: | 7 April 1943 |
| Commissioned: | 31 July 1943 |
| Decommissioned: | 30 January 1946 |
| Recommissioned: | 23 September 1951 |
| Decommissioned: | 30 April 1954 |
| Struck: | 1 September 1962 |
| Fate: | Sunk as a target off San Diego, California on 16 November 1962 |
| General characteristics | |
| Class and type: | Balao class diesel-electric submarine |
| Displacement: | 1,526 long tons (1,550 t) surfaced, 2,391 long tons (2,429 t) submerged |
| Length: | 311 ft 6 in (94.95 m) |
| Beam: | 27 ft 3 in (8.31 m) |
| Draft: | 16 ft 10 in (5.13 m) maximum |
| Propulsion: |
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| Speed: | 20.25 kn (37.50 km/h) surfaced, 8.75 kn (16.21 km/h) submerged |
| Range: | 11,000 nmi (20,000 km) surfaced @ 10 kn (19 km/h) |
| Endurance: | 48 hours @ 2 kn (3.7 km/h) submerged, 75 days on patrol |
| Test depth: | 400 ft (120 m) |
| Complement: | 10 officers, 70–71 enlisted |
| Armament: |
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USS Aspro (SS/AGSS-309), a Balao-class submarine, was the first ship of the United States Navy to be named for the aspro, a fish found abundantly in the upper Rhône River. According to legend, the aspro comes to the surface only in bad weather, when other fishes take refuge near the bottom. This trait gave rise to its nickname, "Sorcerer."
Aspro was laid down on 27 December 1942 by the Portsmouth Navy Yard in Kittery, Maine; launched on 7 April 1943; sponsored by Mrs. William L. Freseman; and commissioned on 31 July 1943, Lieutenant Commander Harry Clinton Stevenson in command.
Aspro held shakedown training in the waters off Portsmouth, New Hampshire; Newport, Rhode Island; and New London, Connecticut. After completing her tests and trial runs, she sailed on 17 September for Pearl Harbor. She arrived at Pearl Harbor on 18 October and immediately began preparations for her first war patrol which would take her to waters around Formosa and Sakishima Gunto.
She departed Hawaii on 24 November and made a brief fuel stop at Midway Atoll on 28 November before proceeding to her assigned area. On 15 December, she spotted a Japanese convoy consisting of one tanker, two freighters, and two escorts. The submarine fired torpedoes at the tanker and claimed a hit, but apparently failed to inflict serious damage.
Her next chance came on the night of 17–18 December, when she spotted a convoy of 15 Japanese ships. At 22:26, Aspro fired her stern tubes at a large tanker and an adjacent freighter. The submarine then made an end around run and attacked again. She claimed to have witnessed three vessels sinking, one severely crippled ship being taken under tow, and two other vessels having been damaged. Aspro escaped counterattack by the Japanese destroyer Shiokaze. With only one torpedo left, she returned to Midway on 1 January 1944, terminating her patrol after 39 days at sea. Postwar analysis failed to substantiate any of the sinkings, crediting her with damaging fleet tankers Sarawak Maru and Tenei Maru.
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