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HMS Falmouth (L34)

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Through World War II, Sonar and Singapore

Construction and design

The British Admiralty ordered four sloops as part of the 1930 construction programme, with three ordered from Devonport and one from Chatham dockyard. Classified as repeat Shoreham or Falmouth-class ships, they, like the four Shoreham-class sloops ordered under the 1929 construction programme, were a lengthened and improved version of the Hastings class of the 1928 programme, which were themselves a modification of the Bridgewater class. They were intended for a dual role of patrol service in overseas stations in peacetime and minesweeping during war.

Falmouth was 281 feet 4 inches (85.75 m) long overall, with a beam of 35 feet (10.67 m) and a draught of 10 feet 2 inches (3.10 m) at full load. Displacement was 1,060 long tons (1,080 t) standard and 1,515 long tons (1,539 t) deep load. Two Admiralty 3-drum water-tube boilers fed two geared steam turbines which drove two propeller shafts. The machinery was rated at 2,000 shaft horsepower (1,500 kW), giving a speed of 16.5 knots (30.6 km/h; 19.0 mph).

The ship was completed as a despatch vessel, so had a reduced armament compared with the other members of the class. Main gun armament consisted of a single 4-inch (102 mm) QF Mk V guns mounted forward, on a High-Angle (HA) anti-aircraft mounting, with additional accommodation for the Admiral, his retinue and his staff replaced the aft 4-inch gun and minesweeping gear fitted to the remainder of the class. Four 3-pounder (47 mm) saluting guns completed the ship's gun armament. The ship had a crew of 100 officers and other ranks.

Falmouth was laid down at Devonport Dockyard on 31 August 1931. She was launched on 19 April 1932 and completed on 27 October 1932.

Modifications

The repeat Shorehams were modified in 1937 to 1939 to improve their anti-aircraft capability, with Falmouth having a second HA 4-inch gun fitted instead of the additional accommodation aft, and a quadruple Vickers .50 machine gun mount added for close-in anti-aircraft duties. In March 1940, she was refitted to add Sonar, and a second quadruple 0.50 machine gun mount added. During the war, the 3-pounders and multiple machine gun mounts were removed, and first two, and later four single Oerlikon 20 mm autocannon added.

The ship's anti-submarine armament was also gradually increased during the war, with the number of depth charges carried increasing from 15 to as many as 60–90. Other wartime changes included the fitting of radar.

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