The Pacific War Online Encyclopedia
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| Tonnage | 1570 tons standard displacement surfaced 2416 tons standard displacement submerged |
| Dimensions | 311'11" by 27'4" by 16'5" 95.07m by 8.33m by 5.00m |
| Maximum speed | 20 knots surfaced 8.75 knots submerged |
| Dive |
To 400 feet To 120 meters |
| Complement | 81 |
| Armament | 1 5"/25
AA gun 1 40mm Bofors AA gun 1 20mm Oerlikon AA gun 2 0.50 machine guns 10 21" torpedo tubes (28 torpedoes) |
| Machinery |
2-shaft diesel (5400 shp) or
electric (2740 shp) |
| Bunkerage | 193.9 tons diesel oil (normal) 361.5 tons diesel oil (maximum) |
| Range | 16,000 nautical miles (20,000 km) at 10 knots surfaced 96 nautical miles (188 km) at 2 knots submerged |
The Tenches were
completed in 1945, with just two
units ready in time to conduct war patrols. They were similar
to the Gatos
with
strengthened hulls and other improvements.
The design dated to 1943 as the second redesign of
the Gatos (the first redesign
was the Balaos, with relatively simple
changes to increase the hull thickness and dive depth.) The most
important change was the rearrangement of the tank layout to eliminate
vent risers in the torpedo rooms that were considered a dangerous point
of vulnerability under depth charge
attack. Another innovation was a "variable" fuel tank to increase
endurance that was capable of withstanding water pressure. A new
slow-speed electric motor was developed
that could be coupled directly to the propeller shafts, eliminating
gear whine that was a major source of noise. This motar was also retrofitted to a number of Gatos and Balaos both during and after the
war.
| Arrived 1944-12-27 | |
| Tigrone | Arrived 1945-1-23 |
| Tirante | Arrived 1945-2 |
| Trutta | Arrived 1945-2-10 |
| Torsk | Arrived 1945-2-25 |
| Toro | Arrived 1945-3-15 |
| Thornback |
Arrived 1945-3-27 |
References
The Pacific War Online Encyclopedia © 2007, 2009, 2013 by Kent G. Budge. Index
