The Pacific War Online Encyclopedia
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| Tonnage | 1316 tons standard displacement 1968 tons submerged |
| Dimensions | 298'1" by 24'9" by 12'10" 90.9m by 7.54m by 3.91m |
| Maximum speed | 18 knots surfaced 8 knots submerged |
| Maximum dive |
250 feet 76 meters |
| Complement | 55 |
| Armament | 4 21" bow/2 21" stern torpedo
tubes (18 torpedoes) 1 3"/50 AA gun |
| Machinery |
1-shaft diesel-electric (4300
shp) |
| Bunkerage | 270 tons diesel oil |
| Range | 11,000 nautical miles (20,400 km) at 10 knots surfaced 50 nautical miles (90 km) at 5 knots submerged |
| Cargo | 47 tons |
| Modifications |
Three units received two external bow torpedo tubes in 1942. |
The Sharks
were completed in 1935-1937 as the second group of boats under the P program. The first two boats (Shark and Tarpon) are sometimes regarded as a separate class, although the only significant difference from Perch and subsequent units was that the latter had an extra two feet of length in the engine rooms to improve accessibility.
The first four boats of the class were the last American
submarines to use riveted construction. The use of welded hulls in the
remaining units improved their overall toughness and eliminated the
danger of leaks along riveted seams, particularly from fuel tanks. The
boats were also the last to have a single large engine room. Subsequent
American submarine classes split the machinery into two compartments.
The later units were also the first built with air conditioning, which was also retrofitted into the early units. Air
conditioning was not a luxury; in the warm tropical waters of the
Pacific, lack of air conditioning meant that temperatures in a submarine
rose to levels that threatened heat exhaustion for the crews, while
moisture condensation on interior surfaces threatened electrical
equipment and encouraged both corrosion of metal and growth of mildew in
living spaces.
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Off Diamond Head, Oahu |
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125 miles NE of Oahu |
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125 miles NE of Oahu |
Likely mined after 1942-9-25 off Honshu |
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| Disappeared after 1942-2-7 in Netherlands East Indies |
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| Tarpon | Mariveles | |
| Pickerel | Mariveles | Disappeared after 1943-4-7 off Honshu |
| Perch | Cavite | Scuttled 1942-3-3 off Surabaya after severe depth charging |
| Permit | Cavite |
References
The Pacific War Online Encyclopedia © 2007-2009, 2013 by Kent G. Budge. Index
