USS Greenfish (SS-351)

Greenfish (SS-351) c. 1960s with the three distinctive shark-fin domes of the PUFFS sonar.
History
United States
Name:	USS Greenfish
Builder:	Electric Boat Company, Groton, Connecticut
Laid down:	29 June 1944
Launched:	21 December 1945
Commissioned:	7 June 1946
Decommissioned:	29 October 1973
Struck:	29 October 1973
Fate:	Transferred to Brazil, 19 December 1973
History
Brazil
Name:	Amazonas
Acquired:	19 December 1973
Struck:	15 October 1992
Identification:	S-16
Fate:	Scrapped in 2001
General characteristics
Class and type:	Balao-class diesel-electric submarine
Displacement:	1,526 tons (1,550 t) surfaced 2,424 tons (2,463 t) submerged
Length:	311 ft 9 in (95.02 m)
Beam:	27 ft 3 in (8.31 m)
Draft:	16 ft 10 in (5.13 m) maximum
Propulsion:	4 × General Motors Model 16-278A V16 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
General characteristics (Guppy II)
Class and type:	none
Displacement:	1,870 tons (1,900 t) surfaced 2,440 tons (2,480 t) submerged
Length:	307 ft (93.6 m)
Beam:	27 ft 4 in (7.4 m)
Draft:	17 ft (5.2 m)
Propulsion:	Snorkel added Batteries upgraded to GUPPY type, capacity expanded to 504 cells (1 × 184 cell, 1 × 68 cell, and 2 × 126 cell batteries) 4 × high-speed electric motors replaced with 2 × low-speed direct drive electric motors
Speed:	Surfaced: 18.0 knots (20.7 mph; 33.3 km/h) maximum 13.5 knots (15.5 mph; 25.0 km/h) cruising Submerged: 16.0 knots (18.4 mph; 29.6 km/h) for ½ hour 9.0 knots (10.4 mph; 16.7 km/h) snorkeling 3.5 knots (4.0 mph; 6.5 km/h) cruising
Range:	15,000 nm (28,000 km) surfaced at 11 knots (13 mph; 20 km/h)
Endurance:	48 hours at 4 knots (5 mph; 7 km/h) submerged
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) all guns removed
General characteristics (Guppy III)
Class and type:	none
Displacement:	1,975 tons (2,007 t) surfaced 2,450 tons (2,489 t) submerged
Length:	321 ft (97.8 m)
Beam:	27 ft 4 in (7.4 m)
Draft:	17 ft (5.2 m)
Speed:	Surfaced: 17.2 knots (19.8 mph; 31.9 km/h) maximum 12.2 knots (14.0 mph; 22.6 km/h) cruising Submerged: 14.5 knots (16.7 mph; 26.9 km/h) for ½ hour 6.2 knots (7.1 mph; 11.5 km/h) snorkeling 3.7 knots (4.3 mph; 6.9 km/h) cruising
Range:	15,900 nm (29,400 km) surfaced at 8.5 knots (10 mph; 16 km/h)
Endurance:	36 hours at 3 knots (3 mph; 6 km/h) submerged
Complement:	8–10 officers 5 petty officers 70-80 enlisted men
Sensors and processing systems:	BQS-4 active search sonar BQR-2B passive search sonar BQG-4 passive attack sonar

USS Greenfish (SS-351) was a Balao-class submarine of the United States Navy. It was named for the greenfish, one of various labroid fishes, Florida bluefish or ladyfish.

Greenfish (SS-351) was launched by the Electric Boat Co., Groton, Connecticut, 21 December 1945; sponsored by Mrs. Thomas J. Doyle; and commissioned 7 June 1946, Comdr. R. M. Metcalf commanding.

Greenfish's shakedown cruise 22 July to 13 September 1946, took her to Barranquilla, Colombia; the Canal Zone; Callao, Peru; and St. Thomas, Virgin Islands. Exercises out of New London and in Chesapeake Bay carried her through the year, and the early months of 1947 found Greenfish back in the Caribbean for fleet exercises. On 11 February 1947 she effected one of the first transfers of personnel from an aircraft carrier, Franklin D. Roosevelt, to a submarine by helicopter.

Various exercises along the American coast and in the Caribbean occupied Greenfish until 8 January 1948, when she entered the Electric Boat Co. yards for a GUPPY II conversion. This included the installation of snorkeling equipment on Greenfish, enabling her to run her diesel engines while submerged, which required the enlargement of her "sail". In addition, more batteries were installed to increase her submerged speed and permit the ship to remain completely submerged for longer periods.