L6 1918
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| L1 (ex-E57) | Vickers, Barrow | 5/1916 | 10/5/1917 | 11/1917 | BU 3/1930 | |
| L2 (ex-E58) | Vickers, Barrow | 5/1916 | 6/7/1917 | 12/1917 | BU 3/1930 | |
| L3 | Vickers, Barrow | 6/1916 | 1/9/1917 | 1/1918 | BU 2/1931 | |
| L4 | Vickers, Barrow | 6/1916 | 17/11/1917 | 2/1918 | BU 2/1934 | |
| L5 | Swan Hunter, Wallsend | 8/1916 | 26/1/1918 | 5/1918 | BU 1931 | |
| L6 | Beardmore, Dalmuir | 10/1916 | 14/1/1918 | 7/1918 | BU 1/1935 | |
| L7 | Cammell Laird, Birkenhead | 5/1916 | 24/4/1917 | 12/1917 | BU 2/1930 | |
| L8 | Cammell Laird, Birkenhead | 5/1916 | 7/7/1917 | 3/1918 | BU 10/1930 |
|
Displacement standard, t |
|
|
Displacement normal, t |
891 / 1074 |
|
Length, m |
70.4 |
|
Breadth, m |
7.20 |
|
Draught, m |
4.00 |
|
No of shafts |
2 |
|
Machinery |
Vickers diesels / electric motors |
|
Power, h. p. |
2400 / 1600 |
|
Max speed, kn |
17 / 10.5 |
|
Fuel, t |
diesel oil 78 |
|
Armament |
L1: 6 - 450 TT (4 bow, 2 beam, 10), 1 x 1 - 76/45 QF MkI HA L2, 4, 5, 7, 8: 6 - 450 TT (4 bow, 2 beam, 10), 1 x 1 - 102/40 QF MkIV L3, 6: 6 - 450 TT (4 bow, 2 beam, 10), 1 x 1 - 102/40 QF MkVII |
|
Complement |
35 |
| Diving depth operational, m | 50 |
Ship project history: The design is developed on the basis of "E" class, which in 1916 were old and hard to "stretch" to accommodate further improvements. Admiralty experimented with double-hulled and partially double-hulled designs but eventually reverted to saddle-tank design with higher than "E" speeds. The first two submarines were intended as lengthened "E" and named originally E57 and E58 but showed very many improvements and later were chosen as new class prototypes L1 and L2. That pair was ordered in February 1916, later submarines in May 1916.
Modernizations: 1918, L1: - 1 x 1 - 76/45; + 1 x 1 - 102/40 QF Mk IV
Naval service: No significant events
© Ivan Gogin, 2008-10