Fairmile C motor gun boat


The Fairmile C motor gun boat was a type of motor gunboat designed by Norman Hart of Fairmile Marine for the Royal Navy. An intermediate design, twenty-four boats were built in 1941 receiving the designations MGB 312–335.

Motor Gun Boat 314.jpg
The Fairmile C motor gunboat MGB 314
Class overview
NameFairmile C motor gunboat
Preceded byFairmile B motor launch
Succeeded byFairmile D motor torpedo boat
General characteristics
Displacement72 tons
Length110 ft (34 m)
Beam17 ft 5 in (5.31 m)
Draught5 ft 8 in (1.73 m)
PropulsionThree 850 hp (630 kW) supercharged Hall-Scott petrol engines
Speed26.5 knots (49.1 km/h; 30.5 mph)
Range500 nmi (930 km; 580 mi) at 12 knots (22 km/h; 14 mph) (Bunkerage: 1,800 gal + extra 2,600 gal)
Complement2 officers + 14 crew


The Fairmile type C was a reuse of the hull form of the type A but with the lessons learned from the type A incorporated in terms of steering and deck layout.


Five boats of the twenty-four built were lost to enemy action.

The class was mainly involved in close escort work with east coast convoys, and some boats were engaged in clandestine operations. MGB 314 took part in Operation Chariot, the daring raid on the St Nazaire docks (the only facility on the axis-held Atlantic coast suitable to refit Bismarck-class battleships).

Only two survive to this day, one at Hayling Island and the other in Bembridge Harbour, Isle of Wight, although now sunk and due to be broken up 2018. A third survived in Shoreham until 2002.[citation needed]

See alsoEdit



  • John Lambert and Al Ross, Allied Coastal Forces of World War Two, Volume I : Fairmile designs and US Submarine Chasers 1990, Conway Maritime Press ISBN 978-0-85177-519-7

External linksEdit

  • Great Britain's motor gun boats
  • National Historic Ships
  • Raid on St. Nazaire