# List of specifications of submarines of World War II

Submarines of World War II represented a wide range of capabilities with many types of varying specifications produced by dozens of countries. The principle countries engaged in submarine warfare during the war were Germany, Italy, Japan, the United States, United Kingdom and the Soviet Union. The Italian and Soviet fleets were the largest. While the German and US fleets fought anti-shipping campaigns (in the Atlantic and Pacific respectively), the British and Japanese submarines were mostly engaged against enemy warships.

## Specifications

Specifications of the principle submarines of World War II :
| Country | Class | Type | Variants | First commissioned | Production | Class lost | Enemy ships sunk | Displacement (tons) surfaced submerged | Length (feet) | Beam (feet) | Draft (feet) | Propulsion | Speed (knots) surfaced submerged | Range (nautical miles) surfaced submerged | Diving depth (feet) | Complement | Armament (non-torpedo) | Torpedo tubes | Torpedoes | Notable | Comments |
| France | 600 series | Coastal patrol | Sirène, Ariane, Circé, Orion, Diane, Argonaute classes | 1927 | 28 | 18 | TBD | 599–641 745–809 | 205–216 | 16–18 | 14–20 | Diesel (1,200–1,420 hp) Electric (1,000 hp), 2 shafts | 14 7.5–9 | 3,500–4,000 75–82 | 80 | 41 | 1×75–100 mm | 6–7×22" (2–3 forward, 2 midships, 2 aft | | |
| France | Redoutable | Oceangoing patrol | Types I, II | Jul 1931 | 31 | 28 | 3 | 1,572 2,082 | 303 | 27 | 16 | Diesel (4,300 hp) Electric (1,200 hp), 2 shafts | 17 10 | 14,000 90 | 120 | 85 | 1×100mm | 9×22" 2×16" | 11 | Bévéziers | Served with Allies and Axis |
| Germany | Type VII | Oceangoing attack | Types A, B, C, C/41 | Jun 1938 | 695 | 437 | 277 | 753 857 | 218 | 20 | 14 | Diesel (3,200 hp) Electric (750 hp), 2 shafts | 18 8 | 8,700 90 | 720 | 44 | 1×88mm | 5×21" (4 bow, 1 stern) | 14 | U-47, U-99, U-100 | Very successful Atlantic commerce raider |
| Germany | Type IX | Long-range oceangoing attack | Types A, B, C, D, D/42 | Dec 1938 | 192 | 13? | TBD | 1,032 1,053 | 251 | 22 | 15 | Diesel (2,800 hp) Electric (1,000 hp), 2 shafts | 18 7 | 12,000 65 | 755 | 54 | 1×105mm | 6×21" (4 bow, 2 stern) | 24 | TBD | Very successful Atlantic commerce raider |
| Germany | Type XXI | Long-range oceangoing attack electro-boat | Type A | Jun 1944 | 98 | TBD | 0 | 1,621 1,819 | 252 | 22 | 20 | Diesel (4,000 hp) Electric (4,800 hp), Silent electric (226 hp), 2 shafts | 16 17 | 15,500 385 | 850 | 57 | 2×twin 20mm | 6×21" (all bow) | 23 | TBD | Significant post-war impact |
| Japan | I-15 | Long-range oceangoing attack | Types B1, B2, B3 | Sep 1940 | 20 | TBD | TBD | 2,590 3,655 | 356 | 30 | 17 | Diesel (12,400 hp) Electric (2,000 hp), 2 shafts | 24 8 | 14,000 100 | 330 | 100 | 1×140mm, 2×25, airplane, | 6×21" (all bow) | 18 | TBD | Carried an airplane |
| Japan | Kaiten | Midget suicide | Types 1, 2, 3,4 | 1944-1945 | 2000+ | TBD | 0? | 18 18 | 48-54 | 3-4.5 | 3-4 | Torpedo engine (550 hp) or Hydro-hydrazine (1,800 hp) | 30-40 30-40 | 23–38 km | TBD | 1-2 | 1,500 kg warhead | 0 | 0 | TBD | Commonly intended as a suicide craft |
| Japan | Kohyoteki | Midget attack | Types A, B, C | 1941? | 101 | TBD | 0? | TBD 47 | 79 | 6 | 10 | Electric (600 hp) | 23 19 | 100 TBD | 98 | 2 | 140 kg scuttling charge | 2 | 2 | TBD | Attacked Pearl Harbor and elsewhere |
| Netherlands | O21 Class | Oceangoing attack | None | 1937 | 7 | 3? | TBD | 990 1205 | 77.7m | 6.8m | 3.95. | Diesel (2×2,500 hp) Electric (2×500 hp), 2 shafts | 19.5 9 | 10,000 28 | 115m | 39 | 1×88mm | 8×21" (4 bow, 2 stern, 2 traversed) | 22 | TBD | Very successful Pacific commerce raider |
| United Kingdom | T-class | Oceangoing patrol | 1st, 2nd and 3rd group | Dec 1938 | 53 | about 25% | TBD | 1,095 1,585 | 276 | 25 | 14 | Diesel (2,500 hp) Electric (1,450 hp), 2 shafts | 16 9 | 7,000 80 | 300-350 | up to 63 | 1×4" gun | 10-11×21" (mostly bow) | 16 | Turbulent, Thrasher, Torbay | Served into the 1960s |
| United Kingdom | U-class | Coastal patrol | Group I, II, III ("V") | 1938 | 70 | TBD | TBD | 562 740 | 205 | 16 | 16 | Diesel-electric (825 shp), 2 shafts | 12.75 9 | 5,000 mi 120 mi | 300 | 37 | 1×3" gun | 4×21" (bow) | 8 | Venturer, Upholder | chiefly Mediterranean operations, used outside RN |
| United States | Gato | Long-range oceangoing attack | Gato, Balao, Tench | Nov 1941 | 228 | 31 | TBD | 1,526 2,424 | 312 | 27 | 15 | Diesel (5,400 hp) Electric (2,750 hp), 2 shafts | 20 9 | 12,000 95 | 300-400 | 80 | 2×50 cal, 2 × 30 cal MG, 1×3" | 10×21" (6 bow, 4 stern) | 24 | Flasher, Tang, Wahoo, Archerfish, Bowfin | Very successful type, main U.S. submarine |