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Mahan Class, U.S. Destroyers


Photograph of Mahan-class destroyer

National Archives #80-G-466572

Schematic diagram of Mahan class destroyer

ONI 222


Specifications:


Tonnage 1488 tons standard displacement
Dimensions 334'3" by 35'5" by 12'4"
101.88m by 10.80m by 3.76m
Maximum speed       36.5 knots
Complement 158
Armament 5 5"/38 dual-purpose guns
4 0.50 machine guns
3x4 21" torpedo tubes
2 depth charge tracks (44 depth charges)
4 depth charge throwers
Machinery
2-shaft G.E.C. geared turbine (49,000 shp)
4 Babcock & Wilcox boilers
Bunkerage 522 tons fuel oil
Range 6500 nautical miles (12,000 km) at 12 knots
Sensors
QC sonar
Modifications
1942: Search radar (probably SC) and 4 to 5 single 20mm Oerlikon AA guns were added.
Later one 5" gun was replaced with two more 20mm or 2x2 40mm Bofors AA guns and fire control radar (probably FC) was added.


The Mahans were completed in 1936-1937 and inherited both the strengths and the weaknesses of the preceding Farragut class: good armament, very high speed, and weak hulls. They differed from the earlier class in shipping more torpedoes and in using higher temperature steam turbines, with their greater efficiency. However, the extra bank of torpedoes could be shipped only by moving two banks off the centerline.

Two units, Dunlap and Fanning, had closed gun houses for the two forward guns, and are sometimes listed separately as the Dunlap class. This was the only significant difference between these ships and the other Mahans.

Downes was completely wrecked during the attack on Pearl Harbor. Her machinery was salvaged for construction of what was really a new ship, but the U.S. Navy chose to regard it as the old ship, extensively repaired, with the same hull number.


Units in the Pacific:

Reid

Pearl Harbor

Sunk by kamikazes 1944-12-11 off Ormoc Bay

Cassin

Pearl Harbor (severely damaged)


Conyngham      

Pearl Harbor


Cummings

Pearl Harbor


Cushing 3 days out of San Francisco en route Oahu Sunk by gunfire 1942-11-13 off Guadalcanal

Shaw

Pearl Harbor (badly damaged)


Case

Pearl Harbor


Downes 1943-11-15 (Mare Island)
Dunlap Pearl Harbor
Perkins Mare Island Sunk in collision 1943-11-29 off New Guinea
Smith Mare Island
Fanning with Task Force 8 (Enterprise)
Flusser TF 12 (Newton, Lexington) en route Midway from Oahu
Drayton TF 12 (Newton, Lexington) en route Midway from Oahu     

Lamson TF 12 (Newton, Lexington) en route Midway from Oahu
Mahan TF 12 (Newton, Lexington) en route Midway from Oahu Sunk by kamikazes 1944-12-7 off Ormoc Bay
Preston San Diego Sunk by gunfire 1842-11-15 off Guadalcanal


Photo Gallery


Oblique view of Mahan-class destroyer

U.S. Navy

Bow view of Mahan in 1938

U.S. Navy

Side view of Mahan in 1938

U.S. Navy

Aft view of Mahan-class destroyer

U.S. Navy

Overhead view of Mahan-class destroyer

U.S. Navy

Overhead view of Mahan-class destroyer

U.S. Navy

Close view of forward  part of Mahan-class destroyer

U.S. Navy

Close view of aft  part of Mahan-class destroyer

U.S. Navy

View of forward superstructure of Mahan

U.S. Navy

Overhead view of aft of Mahan-class destroyer

U.S. Navy

Mahan-class destroyer hulls under construction

U.S. Navy

Crew's mess on Mahan-class destroyer

U.S. Navy


References

DANFS

Friedman (2004)

Gogin (2010; accessed 2012-12-28)

Whitley (1988)

Worth (2001)



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