Recognition Guide Warships of the Second World War
United States Navy — Submarine SS-207

USS Grampus (SS-207)

Tambor-class diesel-electric submarine

USS Grampus (SS-207)
Electric Boat Company — This image has been extracted from another file — Public domain — Wikimedia Commons Plate — SS-207 Off Groton, Connecticut, during her trials, 26 March 1941. Photographed by her builder, the Electric Boat Company, of Groton. Photograph from the Bureau of Ships Collection in the U.S. National Archives.

Service

  1. United States Navy23 May 1941 — 21 June 1943759 days of the war
Full service history About 579 words
Tambor-class diesel-electric submarine Particulars
Name
USS Grampus
Pennant / hull number
SS-207
Builder
Electric Boat Company, Groton, Connecticut
Laid down
14 February 1940
Launched
23 December 1940
Commissioned
23 May 1941
Struck
21 June 1943
Fate
Possibly sunk by Japanese destroyers in Blackett Strait, March 5, 1943 (1943)
Status
Wreck

Specifications

Displacement, submerged
2,370 long tons (2,408 t)
Length
93.57 m (307 ft)
Beam
8.23 m (27 ft)
Draught
4.27 m (14 ft)
Speed
20.4 knots (37.8 km/h, 23.5 mph)
Range
11,000 nmi (20,372 km)
Complement
60
Main gun
76 mm (3 in)

The grampus is a large cetacean ( Grampus griseus ) of the "blackfish family" commonly referred to as Risso's dolphin. Found in warm seas throughout the world, the dolphin has a blunt head, barrel-shaped body and ranges in color from grey to black. Risso's dolphins swim in groups of 3-50 animals and prefer offshore waters, where they hunt squid, octopi and fish.

The fifth Grampus (SS-207), built by the Electric Boat Co. of Groton, Conn., was launched 23 December 1940; sponsored by Mrs. Clark H. Woodward; and commissioned 23 May 1941 at New London, Lt. Comdr. Edward S. Hutchinson in command.

After shakedown in Long Island Sound, Grampus sailed to the Caribbean with Grayback on 8 September to conduct a training war patrol, returning to New London 28 September. The Japanese attack on Pearl Harbor found Grampus undergoing post-shakedown overhaul at Portsmouth, N.H., but soon ready for war. On 22 December, she sailed for the Pacific, reaching Pearl Harbor on 1 February 1942 via the Panama Canal and Mare Island.

Continue to the full service history About 579 words

From the Dictionary of American Naval Fighting Ships, compiled by the Naval History and Heritage Command (Grampus V (SS-207)). A work of the United States Government, in the public domain.

Armament and machinery

Armament and machinery
Propulsion
  • 4 × General Motors Model 16-248 V16 Diesel engines driving electric generators
  • 2 × 126-cell Sargo batteries
  • 4 × high-speed General Electric electric motors with reduction gears
  • two propellers
  • 5,400 shp (4.0 MW) surfaced
  • 2,740 shp (2.0 MW) submerged
Armament
  • 10 × 21-inch (533 mm) torpedo tubes
  • 6 forward, 4 aft
  • 24 torpedoes
  • 1 × 3-inch (76 mm) / 50 caliber deck gun
  • Bofors 40 mm and Oerlikon 20 mm cannon

Sister ships

Sources

  • Facts harvested from USS Grampus (SS-207) on Wikipedia. Figures only — no wording is taken from it.
  • Service history reproduced verbatim from Grampus V (SS-207) , Dictionary of American Naval Fighting Ships — public domain, a work of the United States Government.
  • Photograph: Electric Boat Company — This image has been extracted from another file — Public domain — Wikimedia Commons