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Porpoise Class
| Name |
Builders |
Laid down |
Launched |
Commissioned |
| S06 Cachalot |
S |
1955 |
N/A |
1959 |
| S05 Finwhale |
C |
1956 |
N/A |
1960 |
| S04 Grampus |
C |
1955 |
N/A |
1958 |
| S03 Narwhal |
V |
1956 |
N/A |
1959 |
| S01 Porpoise |
V |
1954 |
1956 |
1958 |
| S02 Rorqual |
V |
1955 |
N/A |
1958 |
| S07 Sealion |
C |
1958 |
N/A |
1961 |
| S08 Walrus |
S |
1958 |
1959 |
1961 |
Builders:
C : Cammell Laird, Birkenhead, United Kingdom
S : Scotts, Greenock, United Kingdim
V : Vickers, Barrow, United Kingdom
Dimensions:
290' x 26' 6" x 18' / 88.39m x 8.10m x 5.48m
Displacement:
2080 tons surfaced / 2450 tons dived
Complement:
64
Armament:
6 x 21" bow torpedo tubes
2 x 21" stern torpedo tubes
A total of 30 torpedos could be carried, usually Mk8 or Mk23 models. Mines could also be carried.
Powerplant:
Two ASR 16VVS AS21 diesel generators totalling 3680bhp were fitted with two English Electric main
motors totalling 12000hp driving two shafts. Maximum speed was 12kts surfaced and 17kts dived. Two
880v batteries each of 224 cells were fitted.
Electronics Fit:
Radar:
Type 1006 navigation
Sonar:
Type 187 bow bounted
Type 197 intercept
Other:
N/A
Miscellaneous: