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Submarines1944–present
Diesel-electric submarine
Tench-class submarine is a diesel-electric submarine. The cited manufacturer or builder is Portsmouth Naval Shipyard Electric Boat Company Boston Navy Yard.
United StatesPortsmouth Naval Shipyard Electric Boat Company Boston Navy Yard
United States Navy Republic of China Navy Turkish Navy Hellenic Navy Peruvian Navy Pakistan Navy Royal Canadian Navy Italian Navy Brazilian Navy Bolivarian Navy of Venezuela
Balao class
Barracuda class
Corsair class
1944–1951
1944–present
29
51
1
1
27
3
Diesel-electric submarine
1,570 tons (1,595 t ) surfaced 2,416–2,429 tons (2,455–2468 t) submerged
311 ft 8 in – 311 ft 9 in (95.0 m)
27 ft 3 in – 27 ft 4 in (8.3 m)
17 ft (5.2 m) maximum
4 × diesel engines driving electrical generators ( Fairbanks-Morse or General Motors ( Corsair only)) 2 × 126- cell Sargo batteries 2 × low-speed direct drive electric motors ( Elliott Company , General Electric , or Westinghouse ) two propellers 5,400 shp (4,000 kW) surfaced 2,740 shp (2,040 kW) submerged
20.25 knots (38 km/h) surfaced 8.75 knots (16 km/h) submerged
11,000 nautical miles (20,000 km) surfaced at 10 knots (19 km/h)
48 hours at 2 knots (3.7 km/h) submerged 75 days on patrol
400 ft (120 m)
10 officers, 71 enlisted
10 × 21-inch (533 mm) torpedo tubes (6 forward, 4 aft) 28 torpedoes 1 × 5-inch (127 mm) / 25 caliber deck gun Bofors 40 mm and Oerlikon 20 mm cannon
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Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 28 Sept 2026 | 95 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 95 m | Wikipedia contributors | approved |
Tench-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
TaiwanReported count for Hai Shih -class (former Tench -class ). Service scope: Republic of China Navy ships; does not replace a national total. 1 distinct quantity component(s) from the same source list; shared rowspan cells counted once. Explicit source inventory scope: active; no other stock status or total inferred. Count column(s): in service: 2. Origin: United States. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.
Reported count for Hai Shih -class (former Tench -class ). Service scope: Republic of China Navy ships; does not replace a national total. 1 distinct count cell(s) from the same source list; shared rowspan cells counted once. Excludes retired/reserve/on-order rows. Count column(s): in service: 2. Origin: United States. The listed variants/roles are the scope, not an immediately deployable count. The components do not establish one inventory census date; the stored date is the retrieved source snapshot.
United States Navy Republic of China Navy Turkish Navy Hellenic Navy Peruvian Navy Pakistan Navy Royal Canadian Navy Italian Navy Brazilian Navy Bolivarian Navy of Venezuela
Equipment reference ↗