Mackerel-class submarine

USS Mackerel (SS-204)
Class overview
Builders:	Electric Boat Company (Mackerel) Portsmouth Naval Shipyard (Marlin)
Operators:	United States Navy
Preceded by:	Tambor class
Succeeded by:	Gato class
Built:	1939–1941
In commission:	1941–1945
Completed:	2
Retired:	2
General characteristics (Mackerel)
Type:	diesel and electric submarine[1]
Displacement:	825 tons (838 t) surfaced[2] 1,190 tons (1,209 t) submerged[2]
Length:	243 ft 1 in (74.09 m)[2]
Beam:	22 ft 1 in (6.73 m)[2]
Draft:	13 ft 0 1⁄4 in (3.969 m)[2]
Propulsion:	2 × Electric Boat direct-drive diesel engines[1] 2 × 60-cell Sargo batteries[2] 2 × Electro Dynamic electric motors[1] 2 screws[1] 1,680 bhp (1,250 kW) surfaced[1] 1,500 bhp (1,100 kW) submerged[1]
Speed:	16 knots (30 km/h) surfaced[1] 11 knots (20 km/h) submerged[1]
Range:	6,500 nautical miles (12,000 km) at 10 knots (19 km/h) (service)[2]
Test depth:	250 ft (76 m)[2]
Complement:	4 officers, 33 enlisted[2]
Armament:	6 × 21-inch (533 mm) torpedo tubes  (four forward, two aft)  12 torpedoes[2] 1 × 3-inch (76 mm) / 50 caliber gun[2]
General characteristics (Marlin)
Type:	Diesel-electric submarine[1]
Displacement:	800 tons (813 t) standard, surfaced[2] 1165 tons (1184 t) submerged[2]
Length:	238 ft 11 in (72.82 m)[2]
Beam:	21 ft 7 1⁄4 in (6.585 m)[2]
Draft:	13 ft 0 1⁄4 in (3.969 m)[2]
Propulsion:	2 × ALCO diesel engines driving electrical generators[1] 2 × 126-cell Sargo batteries[2] 2 × General Electric electric motors[1] 2 screws[1] 1,700 bhp (1,300 kW) surfaced[1] 1,500 bhp (1,100 kW) submerged[1]
Speed:	14.5 knots (27 km/h) surfaced[2] 9 knots (17 km/h) submerged[2]
Range:	7,400 nautical miles (13,700 km) at 10 knots (19 km/h)[2]
Test depth:	250 ft (76 m)[2]
Complement:	4 officers, 34 enlisted[2]
Armament:	6 × 21-inch (533 mm) torpedo tubes  (four forward, two aft)  12 torpedoes[2] 1 × 3-inch (76 mm) / 50 caliber gun[2]

The Mackerel-class submarines were a pair of experimental prototype submarines built just prior to World War II. The two submarines were similar in size and capability to the S-class submarines built at the end of World War I, and had been ordered to test the feasibility of using mass production techniques to build submarines. Once it became apparent that there would be sufficient production of the more capable Gato-class submarines, interest in the design waned and no additional ones were ordered with submarine production standardized during the war on the Gato class and its successors the Balao and Tench class submarines.

References

External links

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