Recognition Guide Warships of the Second World War
Royal Navy — Submarine N56

HMS Grampus (N56)

Grampus-class submarine

Displacement
1,810 long tons (1,839 t)
Length
89.31 m (293 ft)
Beam
7.62 m (25 ft)
Speed
15.5 knots (28.7 km/h, 17.8 mph)
Complement
59

Service

  1. Royal Navy as HMS Grampus10 March 1937 — 16 June 1940289 days of the war
Grampus-class submarine Particulars
Name
HMS Grampus
Pennant / hull number
N56
Builder
Chatham Dockyard
Laid down
20 August 1934
Launched
25 February 1936
Commissioned
10 March 1937
Fate
Sunk, 16 June 1940 (1940)
Status
Wreck

Specifications

Displacement, surfaced
1,810 long tons (1,839 t)
Displacement, submerged
2,157 long tons (2,192 t)
Length
89.31 m (293 ft)
Beam
7.62 m (25 ft)
Draught
4.88 m (16 ft)
Speed
15.5 knots (28.7 km/h, 17.8 mph)
Complement
59

HMS Grampus was a Grampus-class submarine, operated by the Royal Navy. She carried the pennant number N56. Her keel was laid at Chatham Dockyard on 20 August 1934. Launched on 25 February 1936, she entered service on 10 March 1937.

Six ships of the class were built. The class followed the River-class submarine and was succeeded by the T class.

The boat displaced 1,810 long tons surfaced and 2,157 long tons submerged. She measured 89.3 m (293 ft) long with a beam of 7.6 m (25 ft). Her designed speed was 15.5 knots, and she carried a complement of 59.

Her main battery was one 102 mm (4 in) guns. Her machinery developed 3,300 hp.

She was in commission for 289 days of the Second World War.

She was sunk on 16 June 1940, at 37°05′N 17°30′E. The wreck survives.

Written from the harvested record. Every figure above is sourced; the wording is this site's own.

Armament and machinery

Armament and machinery
Propulsion
  • 2 × diesel engines
  • 2 × electric motors
  • 2 × shafts
Power
  • 3300 hp (diesel engines)
  • 1630 hp (electric motors)
Armament
  • 6 × 21 inch (533 mm) torpedo tubes (bow) (12 torpedoes), 1 × 4 in deck gun, 50 × mines

Sister ships

Sources

  • Facts harvested from HMS Grampus (N56) on Wikipedia. Figures only — no wording is taken from it.