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A Class, British Destroyers


Photograph of Achates. an Acasta or "A" class destroyer

Wikipedia Commons


Specifications:


Tonnage 1350 tons standard displacement
Dimensions 323' by 32'3" by 12'3"
98.4m by 9.83m by 3.73m
Maximum speed       35.25 knots
Complement 138
Armament 3x1 4.7"/45 guns
1 3"/45 dual-purpose gun
1x2 2pdr guns
2x1 20mm Oerlikon AA guns
1x4 21" (53cm) torpedo tubes
70 depth charges, 4 depth charge throwers
Machinery
2-shaft Parsons geared turbine (34,000 shp)
3 Admiralty 3-drum boilers
Bunkerage 380 tons fuel oil
Range 4800 nautical miles (8900 km) at 15 knots
Sensors
Type 121 sonar
Type 286F or 290 radar
Modifications
1944: Replaced one 4.7" gun with 1x2 6pdr guns

The Acastia or "A" class of destroyers were completed in 1930-1931. The design dated to July 1926 and incorporated novel boiler technology and minesweeping gear, but were very light on antisubmarine equipment, having no sonar nor depth charge throwers as completed. The design emphasis seems to have been on torpedo attack capability and improved habitability. The minesweeping gear and after torpedo tubes were removed by the time the Pacific War broke out in favor of much increased antisubmarine capability.


Units in the Pacific:


Arrow   

Arrived 1942-3    
Withdrawn 1942-9-30


References

Whitley (1988)

Worth (2001)



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