USS Spot information

History
United States
Name	Spot
Ordered	9 July 1942
Builder	Mare Island Naval Shipyard
Laid down	24 August 1943
Launched	19 May 1944
Commissioned	3 August 1944
Decommissioned	19 June 1946
Recommissioned	19 August 1961
Decommissioned	12 January 1962
Stricken	1 August 1975
Identification	Hull number: SS-413
Fate	Transferred to Chile, 12 January 1962
Chile
Name	Simpson
Acquired	12 January 1962
Decommissioned	1982
Identification	Pennant number: SS-21
General characteristics
Class and type	Balao class diesel-electric submarine
Displacement	1,525 tons (1,550 t) surfaced; 2,424 tons (2,463 t) submerged;
Length	311 ft 10 in (95.05 m)
Beam	27 ft 4 in (8.33 m)
Draft	16 ft 10 in (5.13 m) maximum
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines driving electrical 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;
Speed	20.25 knots (38 km/h) surfaced; 8.75 knots (16 km/h) submerged;
Range	11,000 nautical miles (20,000 km) surfaced at 10 knots (19 km/h)
Endurance	48 hours at 2 knots (3.7 km/h) submerged; 75 days on patrol;
Test depth	400 ft (120 m)
Complement	10 officers, 70–71 enlisted
Armament	10 × 21-inch (533 mm) torpedo tubes; 6 forward, 4 aft; 24 torpedoes; 1 × 5-inch (127 mm) / 25 caliber deck gun; Bofors 40 mm and Oerlikon 20 mm cannon;

USS Spot (SS-413) was a Balao-class submarine of the United States Navy, named for the spot, a small sciaenoid food fish of the Atlantic coast, with a black spot behind its shoulders.

^ ^a ^b ^c ^d ^e ^f ^g 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 ^f ^g ^h Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 275–280. ISBN 0-313-26202-0.
^ ^a ^b ^c ^d ^e ^f U.S. Submarines Through 1945 pp. 305–311
^ ^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. 275–280. ISBN 978-0-313-26202-9.
^ U.S. Submarines Through 1945 pp. 261–263
^ ^a ^b ^c U.S. Submarines Through 1945 pp. 305–311

[FriedmanSubs1-dates-1] ^ ^a ^b ^c ^d ^e ^f ^g 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] ^ ^a ^b ^c ^d ^e ^f ^g ^h Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 275–280. ISBN 0-313-26202-0.

[FriedmanSubs1-specs-3] ^ ^a ^b ^c ^d ^e ^f U.S. Submarines Through 1945 pp. 305–311

[Register_275–280-4] Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 275–280. ISBN 978-0-313-26202-9.

[FriedmanSubs1-engines_261–263-5] U.S. Submarines Through 1945 pp. 261–263

[FriedmanSubs1-specs_305–311-6] U.S. Submarines Through 1945 pp. 305–311

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Down Periscope

History

United States
Name	Spot
Ordered	9 July 1942
Builder	Mare Island Naval Shipyard^[1]
Laid down	24 August 1943^[1]
Launched	19 May 1944^[1]
Commissioned	3 August 1944^[1]
Decommissioned	19 June 1946^[1]
Recommissioned	19 August 1961^[1]
Decommissioned	12 January 1962^[1]
Stricken	1 August 1975^[2]
Identification	Hull number: SS-413
Fate	Transferred to Chile, 12 January 1962^[2]
Chile
Name	Simpson
Acquired	12 January 1962
Decommissioned	1982
Identification	Pennant number: SS-21
General characteristics
Class and type	Balao class diesel-electric submarine^[2]
Displacement	1,525 tons (1,550 t) surfaced^[2] 2,424 tons (2,463 t) submerged^[2]
Length	311 ft 10 in (95.05 m)^[2]
Beam	27 ft 4 in (8.33 m)^[2]
Draft	16 ft 10 in (5.13 m) maximum^[2]
Propulsion	4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines driving electrical generators^[4]^[5] 2 × 126-cell Sargo batteries^[6] 4 × high-speed General Electric electric motors with reduction gears^[4] two propellers^[4] 5,400 shp (4.0 MW) surfaced^[4] 2,740 shp (2.0 MW) submerged^[4]
Speed	20.25 knots (38 km/h) surfaced^[3] 8.75 knots (16 km/h) submerged^[3]
Range	11,000 nautical miles (20,000 km) surfaced at 10 knots (19 km/h)^[3]
Endurance	48 hours at 2 knots (3.7 km/h) submerged^[3] 75 days on patrol
Test depth	400 ft (120 m)^[3]
Complement	10 officers, 70–71 enlisted^[3]
Armament	10 × 21-inch (533 mm) torpedo tubes 6 forward, 4 aft 24 torpedoes^[6] 1 × 5-inch (127 mm) / 25 caliber deck gun^[6] Bofors 40 mm and Oerlikon 20 mm cannon