SS Dieppe (1905)
Introduction '''''Dieppe''''' was a steam passenger ferry that was built in 1905 for the London, Brighton and South Coast Railway. She was requisitioned during the First World War for use as a troopship and later as a hospital ship '''HMS ''Dieppe''''', returning to her owners postwar. She passed to the Southern Railway on 1 January 1923.In 1933 she was sold to W E Guinness and converted to a private diesel yacht, '''''Rosaura'''''. She was requisitioned in the Second World War for use as an armed boarding vessel, '''HMS ''Rosaura'''''. She struck a mine and sank off Tobruk, Libya on 18 March 1941.
Description The ship was built by Fairfield Shipbuilding & Engineering Co Ltd, Govan. She was yard number 439 and was launched on 6 April 1905 with completion in May 1905.The ship was  long, with a beam of  and a depth of . She was powered by three steam turbines, which were made by Fairfield. The turbines could propel her at a speed of . When converted to a private yacht, the turbines were replaced by two 8-cylinder Atlas diesel engines. One of her propellers was removed as was one of her funnels. Her speed was reduced to . As built, her GRT was 1,210.This had increased to 1,426 by 1930, and further increased to 1,536 in 1933.
History ''Dieppe'' was built for the London, Brighton and South Coast Railway. She was used on their Newhaven — Dieppe route. She was requisitioned by the Royal Navy in the First World War for use as a troopship and a hospital ship. On 27 February 1916 she took aboard over 100 survivors from the  P&O passenger liner , which was sunk by a mine off Dover. ''Dieppe'' was returned to her owners after the war and passed to the Southern Railway at 1923 grouping. On 27 November 1924 ''Dieppe'' had a mishap in which she ended up hitting the breakwater at Newhaven Harbour stern first. The tugs ''Alert'' and ''Richmere'' were sent to her aid. ''Richmere'' became disabled when a cable became entangled around her propeller. The Newhaven lifeboat ''Sir Fitzroy Clayton'' was sent to her aid. ''Richmere'' ended up being dashed against the harbour wall and sank. Her crew were rescued by the lifeboat and the tug was later raised and repaired. ''Dieppe'' managed to dock some five hours after the drama began.In September 1933, ''Dieppe'' was sold to W E Guinness for conversion to a private yacht. She was renamed ''Rosaura'', replacing  which had been lost earlier that year. In August 1934, the Prince of Wales and Wallis Simpson took a cruise on ''Rosaura''. According to Wallis, it was on this cruise that she fell in love with the Prince. Also in 1934, Winston Churchill and his wife Clementine cruised on ''Rosaura'' in the eastern Mediterranean. On 26 September 1936, ''Rosaura'' was in collision with the Dutch coaster  at Amsterdam, Netherlands and was severely damaged. She was subsequently repaired. ''Rosaura'' was requisitioned by the Royal Navy in the Second World War for use as an armed boarding vessel in the Contraband Control Service. In February 1941, ''Rosaura'' was involved in Operation Abstention. On 18 March 1941 ''Rosaura'' struck a mine off Tobruk and sank, claiming the lives of 78 people.
Official number and code letters Official numbers were a forerunner to IMO Numbers. ''Dieppe'' and ''Rosaura'' had the UK Official Number 105655. ''Dieppe'' used the code letters HCRB.
Legacy The yacht ''Rosaura'' is commemorated in the scientific name of a species of Honduran gecko, ''Sphaerodactylus rosaurae''.
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