HMS Rothesay (F107)

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Saluting HMY Britannia, the royal yacht in the 1960s, before Rothesay's 1966 Seacat/helicopter upgrade – note the 40 mm gun in stern
History
United Kingdom
Name	Rothesay
Builder	Yarrow, Scotstoun
Laid down	6 November 1956
Launched	9 December 1957
Commissioned	23 April 1960
Decommissioned	March 1988
Identification	Pennant number: F107
Fate	Scrapped in 1988
General characteristics
Class and type	Rothesay-class frigate
Displacement	As built: 2,150 tons standard 2,560 tons full load As modified: 2,380 tons standard 2,800 tons full load
Length	370 ft (110 m)
Beam	41 ft (12 m)
Draught	17.3 ft (5.3 m)
Propulsion	'Y-100 plant Two Babcock & Wilcox boilers Two English Electric steam turbines 2 shafts 30,000 shp
Speed	30 knots (56 km/h)
Range	400 tons oil fuel, 5,200 nautical miles (9,600 km) at 12 knots (22 km/h)
Complement	152, later 225, modified to 235
Sensors and processing systems	Electronics (as built): Radar Type 293Q target indication Radar Type 277Q height finding Radar Type 275 fire control on director Mark 6M Radar Type 974 navigation Type 1010 Cossor Mark 10 IFF Sonar Type 174 search Sonar Type 162 target classification Sonar Type 170 attack Electronics (as modified): Radar Type 993 target indication Radar Type 903 fire control on director MRS3 Radar Type 978 navigation Type 1010 Cossor Mark 10 IFF Sonar Type 177 search Sonar Type 162 target classification Sonar Type 170 attack
Armament	Armament (as built): 1 × twin 4.5in gun Mark 6 1 × twin 40 mm Bofors gun on STAAG mounting 2 × Limbo A/S mortar Mark 10 12 × 21-in A/S torpedo tubes, 8 fixed and 2 x twin trainable mounts Armament (as modified): 1 × twin 4.5in gun Mark 6 1 × Sea Cat GWS-20 SAM 2 × 20 mm Oerlikon guns 1 × Limbo A/S mortar Mark 10 1 × Westland Wasp HAS.1 Helicopter 2 × 8-barrel 3in Knebworth/Corvus chaff countermeasures launchers

HMS Rothesay was the lead ship of the Rothesay or Type 12M class of anti-submarine frigates of the British Royal Navy. She was commissioned in 1960 and scrapped in 1988.