Narwhal 1909
| No | Name | Yard No | Builder | Laid down | Launched | Comm | Fate |
| SS17 | Narwhal, 11.1911- D1 | 156 | Fore River, Quincy | 4/1908 | 8.4.1909 | 11.1909 | stricken 2.1922 |
| SS18 | Grayling, 11.1911- D2 | 157 | Fore River, Quincy | 4/1908 | 16.6.1909 | 11.1909 | stricken 1.1922 |
| SS19 | Salmon, 11.1911- D3 | 158 | Fore River, Quincy | 4/1908 | 12.3.1910 | 9.1910 | stricken 7.1922 |
|
Displacement standard, t |
|
|
Displacement normal, t |
288 / 337 |
|
Length, m |
41.1 |
|
Breadth, m |
4.20 |
|
Draught, m |
3.60 |
|
No of shafts |
2 |
|
Machinery |
2 Craig petrol engines / 2 electric motors |
|
Power, h. p. |
600 / 260 |
|
Max speed, kts |
12 / 9.5 |
|
Fuel, t |
petrol 5.5 |
| Endurance, nm(kts) | 1240 (9 - 10) / |
|
Armament |
4 - 450 TT (bow, 4) |
|
Complement |
15 |
|
Diving depth operational, m |
60 |
Project history: Practically similar to Å class, except for machinery with extremely unreliable and dangerous petrol engines.
Modernizations: none.
Naval service: All period of service D class submarines were laid in reserve.
D3 1912
© Ivan Gogin, 2014