Carnarvon Bay in September 1945
History
United Kingdom
Name	HMS Carnarvon Bay
Namesake	Caernarfon Bay
Ordered	25 January 1943
Builder	Henry Robb, Leith
Laid down	8 June 1944
Launched	15 March 1945
Completed	20 September 1945
Commissioned	September 1945
Decommissioned	May 1946
Identification	Pennant number K636
Fate	Sold for scrapping, 1959
General characteristics
Class and type	Bay-class frigate
Displacement	1,600 long tons (1,626 t) standard 2,530 long tons (2,571 t) full
Length	307 ft (94 m) o/a
Beam	38 ft 7 in (11.76 m)
Draught	12 ft 9 in (3.89 m)
Installed power	5,500 ihp (4,100 kW) 2 × Admiralty 3-drum boilers
Propulsion	2 shafts 2 vertical triple-expansion steam engines
Speed	20 knots (37 km/h; 23 mph)
Range	9,500 nmi (17,600 km; 10,900 mi) at 12 knots (22 km/h; 14 mph)
Complement	157
Sensors and processing systems	Type 285 fire control radar Type 291 air warning radar Type 276 target indication radar High Frequency Direction Finder (HF/DF) IFF transponder
Armament	2 × twin QF 4-inch Mark XVI dual-purpose guns 2 × twin 40 mm Bofors AA guns 4 × twin 20 mm Oerlikon AA guns 1 × 24-barrel Hedgehog A/S projector 2 rails and 4 throwers for 50 depth charges

HMS Carnarvon Bay was a Bay-class anti-aircraft frigate built for the Royal Navy during World War 2.

The Bay-class frigates were anti-aircraft versions of the Loch-class anti-submarine frigates intended for service in the Far East.^[1] Carnarvon Bay displaced 1,600 long tons (1,600 t) at standard load and 2,420 long tons (2,460 t) at deep load. The ship had an overall length of 307 feet (93.6 m), a beam of 38 feet 7 inches (11.8 m) and a draught of 12 feet 9 inches (3.9 m).^[2] She was powered by two vertical triple-expansion steam engines, each driving one shaft, using steam provided by two Admiralty three-drum boilers. The engines produced a total of 5,500 shaft horsepower (4,100 kW) and gave a maximum speed of 20 knots (37 km/h; 23 mph). Carnarvon Bay carried a maximum of 724 long tons (736 t) of fuel oil that gave her a range of 9,500 nautical miles (17,600 km; 10,900 mi) at 12 knots (22 km/h; 14 mph). The ship's complement was 157 officers and ratings.^[1]

The ships were armed with four QF 4-inch Mark XVI dual-purpose guns in two twin mounts forward of the superstructure. Supplementing their anti-aircraft (AA) defence, they had two twin mounts for 40 mm Bofors and two twin mounts for Oerlikon 20 mm cannon AA guns. Some ships had their Oerlikons replaced by two single Bofors guns. She was fitted with a 24-barrel Hedgehog spigot mortar. Two depth charge rails and four throwers were fitted for 50–60 depth charges.^[3]

HMS Carnarvon Bay, named after Caernarfon Bay (anglicised as 'Carnarvon Bay') in Gwynedd, Wales, was originally ordered as the Loch-class vessel Loch Maddy, but the order was changed in 1944. Built by Henry Robb of Leith, the ship was laid down on 8 June 1944 and launched on 15 March 1945 by Lady Westwood.

After sea trials Carnarvon Bay was assigned to the Rosyth Flotilla, joining in November 1945. Deployed for training duties, she made a single voyage to Oslo in January 1946, and to Scapa Flow in February. In April she sailed to Harwich to be decommissioned. Laid-up in the Reserve Fleet at Harwich, she was used as an accommodation ship for personnel of the Reserve Fleet.^[4]

Carnarvon Bay remained at Harwich until being sold on 28 August 1959.^[4]

• Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
• Friedman, Norman (2006). British Destroyers and Frigates, the Second World War and After. Annapolis, Maryland: Naval Institute Press. ISBN 1-86176-137-6.
• Lenton, H. T. (1998). British & Empire Warships of the Second World War. Annapolis, Maryland: Naval Institute Press. ISBN 1-55750-048-7.