Coastal motor boat
Videos
Coastal Motor Boat was a small high-speed British motor torpedo boat used by the Royal Navy in the First World War and up to end of the Second World War.
40-foot HM Coastal Motor Boat 4 (1916) on display at the Imperial War Museum Duxford, 2017; view from the stern showing the torpedo launching ramp
CMB 103 at Chatham, 2012
Coastal Motor Boat CMB 4R
CMB 4R in Boathouse 4
John I. Thornycroft & Company Limited, usually known simply as Thornycroft, was a British shipbuilding firm founded by John Isaac Thornycroft in Chiswick in 1866. It moved to Woolston, Southampton, in
Coastal motor boat
…30-foot (9.1 m) long motor boat then carried in the davits of a light cruiser, i.e. 4.5 long tons (5.0 short tons; 4.6 t). The CMBs were designed by Thornycroft, who had experience in small fast boats, though nearly half were built by eight other boat builders under subcontract. The boat builders were Tom Bunn…
Thornycroft with his first boat, Nautilus
Rap of 1873 marked the start of Thornycroft's torpedo boat business
Advertisement for J.I. Thornycroft & Co. in Brassey's Naval Annual 1915
Vosper Thornycroft shipyard at Woolston