Narwhal 1941
| No | Name | Yard No | Builder | Laid down | Launched | Comm | Fate |
| SC1, 7.1931- SS167 | V5, 2.1931- Narwhal | Portsmouth N Yd | 5.1927 | 17.12.1927 | 3.1930 | stricken 5.1945 | |
| SC2, 7.1931- SS168 | V6, 2.1931- Nautilus | Mare Island N Yd, Vallejo | 5.1927 | 15.3.1930 | 7.1930 | stricken 7.1945 |
|
Displacement standard, t |
|
|
Displacement normal, t |
2987 / 3960 |
|
Length, m |
108.2 wl 113.1 oa |
|
Breadth, m |
10.1 |
|
Draught, m |
5.16 |
|
No of shafts |
2 |
|
Machinery |
2 MAN diesels + 2 MAN diesel-generators / 2 electric motors |
|
Power, h. p. |
5633 / 1600 |
|
Max speed, kts |
17.4 / 8 |
|
Fuel, t |
diesel oil 732 |
| Endurance, nm(kts) | 18000 (10) / 50 (5) |
|
Armament |
2 x 1 - 152/53 Mk 12.14, 2 x 1 - 12.7/90, 6 - 533 TT (12, 4 bow, 2 stern) |
| Electronic equipment |
JK sonar |
|
Complement |
89 |
|
Diving depth operational, m |
100 |
Project history: Largest American submarines before occurrence of nuclear-powered Nautilus. They were built under slightly modified project of Argonaut, in which stern mine tubes were replaced by two TT. Double-hulled.
These submarines possessed the majority of Argonaut shortcomings: insufficient manoeuvrability and too large diving time. At the same time the big internal volume allowed to use these submarines for subversive landings.
Modernizations: 1940 - 1941, Narwhal: main diesels were replaced by more powerful Fairbank-Morse diesel-generators (6000 h. p.); + QCH sonar
1940 - 1941, Nautilus: main diesels were replaced by more powerful Fairbank-Morse diesel-generators (6000 h. p.); + QCD sonar
1942, Nautilus; 1943, Narwhal: + 2 x 1 - 20/70 Mk 4, 4 - 533 TT (2 ext bow, 2 ext stern, 16 torpedoes totally), SD, SJ radars
Naval service: No significant events.
Narwhal
© Ivan Gogin, 2014