USS Grampus (SS-523)

History
United States
Name	USS Grampus (SS-523)
Builder	Boston Navy Yard
Laid down	8 February 1944
Launched	15 December 1944
Commissioned	26 October 1949
Decommissioned	13 May 1972
Stricken	13 May 1972
Fate	Transferred to Brazil, 13 May 1972
History
Brazil
Name	Rio Grande do Sul (S-11)
Acquired	13 May 1972
Decommissioned	16 November 1978
Fate	Scrapped 1981
General characteristics (Completed as GUPPY II)
Class and type	Tench-class diesel-electric submarine
Displacement	1,870 tons (1,900 t) surfaced; 2,440 tons (2,480 t) submerged;
Length	307 ft (94 m)
Beam	27 ft 4 in (8.33 m)
Draft	17 ft (5.2 m)
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines, equipped with a snorkel, driving electrical generators; 1 × 184 cell, 1 × 68 cell, and 2 × 126 cell GUPPY-type batteries (total 504 cells); 2 × low-speed direct-drive Westinghouse electric motors; two propellers;
Speed	Surfaced:; 18.0 knots (33.3 km/h) maximum; 13.5 knots (25.0 km/h) cruising; Submerged:; 16.0 knots (29.6 km/h) for ½ hour; 9.0 knots (16.7 km/h) snorkeling; 3.5 knots (6.5 km/h) cruising;
Range	15,000 nm (28,000 km) surfaced at 11 knots (20 km/h)
Endurance	48 hours at 4 knots (7 km/h) submerged
Test depth	400 ft (120 m)
Complement	9–10 officers; 5 petty officers; 70 enlisted men;
Sensors and ; processing systems	WFA active sonar; JT passive sonar; Mk 106 torpedo fire control system;
Armament	10 × 21 inch (533 mm) torpedo tubes; (six forward, four aft);

USS Grampus (SS-523), a Tench-class submarine, was the seventh ship of the United States Navy to be named for two members of the dolphin family (Delphinidae): Grampus griseus, also known as Risso's dolphin, and the orca, also known as the killer whale.

^ ^a ^b ^c ^d ^e ^f Friedman, Norman (1995). U.S. Submarines Through 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 285–304. ISBN 1-55750-263-3.
^ ^a ^b ^c ^d ^e Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775-1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 280–282. ISBN 0-313-26202-0.
^ ^a ^b ^c ^d ^e Friedman, Norman (1994). U.S. Submarines Since 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 11–43. ISBN 1-55750-260-9.
^ ^a ^b ^c ^d ^e ^f ^g ^h U.S. Submarines Since 1945 pp. 242
^ U.S. Submarines Through 1945 pp. 261.
^ U.S. Submarines Through 1945 pp. 305-311

[FriedmanSubs1-dates-1] ^ ^a ^b ^c ^d ^e ^f Friedman, Norman (1995). U.S. Submarines Through 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 285–304. ISBN 1-55750-263-3.

[Register-2] Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775-1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 280–282. ISBN 0-313-26202-0.

[FriedmanSubs2-chap2-3] Friedman, Norman (1994). U.S. Submarines Since 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 11–43. ISBN 1-55750-260-9.

[FriedmanSubs2-specs-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h U.S. Submarines Since 1945 pp. 242

[FriedmanSubs1-engines-5] U.S. Submarines Through 1945 pp. 261.

[FriedmanSubs1-specs-6] U.S. Submarines Through 1945 pp. 305-311

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History

United States
Name	USS Grampus (SS-523)
Builder	Boston Navy Yard^[1]
Laid down	8 February 1944^[1]
Launched	15 December 1944^[1]
Commissioned	26 October 1949^[1]
Decommissioned	13 May 1972^[1]
Stricken	13 May 1972^[2]
Fate	Transferred to Brazil, 13 May 1972^[1]
History
Brazil
Name	Rio Grande do Sul (S-11)
Acquired	13 May 1972
Decommissioned	16 November 1978
Fate	Scrapped 1981
General characteristics (Completed as GUPPY II)
Class and type	Tench-class diesel-electric submarine^[2]
Displacement	1,870 tons (1,900 t) surfaced^[3] 2,440 tons (2,480 t) submerged^[3]
Length	307 ft (94 m)^[4]
Beam	27 ft 4 in (8.33 m)^[4]
Draft	17 ft (5.2 m)^[4]
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines, equipped with a snorkel, driving electrical generators^[2]^[3]^[5] 1 × 184 cell, 1 × 68 cell, and 2 × 126 cell GUPPY-type batteries (total 504 cells)^[3] 2 × low-speed direct-drive Westinghouse electric motors^[2] two propellers^[2]
Speed	Surfaced: 18.0 knots (33.3 km/h) maximum 13.5 knots (25.0 km/h) cruising Submerged: 16.0 knots (29.6 km/h) for ½ hour 9.0 knots (16.7 km/h) snorkeling 3.5 knots (6.5 km/h) cruising^[3]
Range	15,000 nm (28,000 km) surfaced at 11 knots (20 km/h)^[4]
Endurance	48 hours at 4 knots (7 km/h) submerged^[4]
Test depth	400 ft (120 m)^[6]
Complement	9–10 officers 5 petty officers 70 enlisted men^[4]
Sensors and processing systems	WFA active sonar JT passive sonar Mk 106 torpedo fire control system^[4]
Armament	10 × 21 inch (533 mm) torpedo tubes (six forward, four aft)^[4]