HMS Grampus (N56)
|Laid down:||20 August 1934|
|Launched:||25 February 1936|
|Commissioned:||10 March 1937|
|Fate:||sunk, 16 June 1940|
|Class and type:||Grampus-class submarine|
|Displacement:||1,810 long tons (1,840 t) (surfaced)
2,157 long tons (2,192 t) (submerged)
|Length:||293 ft (89 m)|
|Beam:||25 ft 6 in (7.77 m)|
|Draught:||16 ft 10 in (5.13 m)|
|Installed power:||3,300 hp (2,500 kW) (diesel engines)
1,630 hp (1,220 kW) (electric motors)
|Propulsion:||2 × diesel engines
2 × electric motors
2 × shafts
|Speed:||15.5 kn (17.8 mph; 28.7 km/h) (surfaced)
8.75 kn (10.07 mph; 16.21 km/h) (submerged)
|Armament:||6 × 21 in (530 mm) torpedo tubes (bow) (12 torpedoes), 1 × 4 in (100 mm) deck gun, 50 × mines|
HMS Grampus (N56) was the lead ship of her class of mine-laying submarine of the Royal Navy. She was built at Chatham Dockyard and launched on 25 February 1936. She served in the Second World War off China before moving to the Mediterranean Sea. She was sunk with all hands by the Regia Marina on 16 June 1940.
On 16 June 1940, under the command of Lieutenant Commander C. A. Rowe, Grampus was laying mines in the Syracuse and Augusta, Sicily area. She was seen by the Italian Spica-class torpedo boat Circe, which was on anti-submarine patrol with Clio, Calliope, and Polluce. Within a very short time, Grampus was destroyed. Wreckage came to the surface along with air bubbles and oil. Polluce was credited with the kill. There were no survivors. Some sources give the date of this action as 24 June 1940.
- Colledge, J. J.; Warlow, Ben (2006) . Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. OCLC 67375475.
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