| Name | No | Builder | Laid down | Launched | Comp | Fate |
| Orkla (ex-MMS1085) | 1950- M313 | East Anglian Constructors, Oulton Broad, UK | 22/4/1944 | 7/1944 | research vessel 1957 | |
| Vefsna (ex-MMS1086) | 1950- M314 | East Anglian Constructors, Oulton Broad, UK | 3/8/1944 | 10/1944 | research vessel 1957 |
|
Displacement standard, t |
360 |
|
Displacement full, t |
430 |
|
Length, m |
42.7 |
|
Breadth, m |
8.51 |
|
Draught, m |
3.15 deep load |
|
No of shafts |
1 |
|
Machinery |
diesel |
|
Power, h. p. |
500 |
|
Max speed, kts |
10 |
|
Fuel, t |
diesel oil 54 |
|
Armament |
2 x 1 - 20/70 Oerlikon or 2 x 2 -20/70 Oerlikon, sweeps |
| Sensors | |
|
Complement |
21 |
Ship project history: Enlarged variant of 115ft MMS. Wooden hull, acoustic and magnetic sweeping gears.
Modernizations: None.
Naval service: No significant events.
RN sister-ship MMS1001 1946
© Ivan Gogin, 2010