2 boilers, General Electric Turbo-electric drive 2 solid manganese-bronze 3600 lb 3-bladed propellers, 8.5 ft (2.6 m). diameter, 7 ft 7 in (2.31 m) pitch 12,000 hp (8.9 MW)
HMS Cosby was a Buckley-class Captain-class frigate during World War II, it was named after Captain Phillips Cosby (1727–1808) of HMS Robust during the American Revolutionary War.
Originally destined for the US Navy HMS Cosby was provisionally given the name USS Reeves (later this name was reassigned to DE 156), however the delivery was diverted to the Royal Navy before the launch. The Commanding Officers of HMS Cosby were Lt Cdr R.S.Connell RN December 1943 and Lt I.Pepperell RN August 1944.
HMS Cosby served with the Nore Command and the Devonport Command earning battle honours for service in the English Channel, North Foreland and North Sea.