HMS ''Prince Charles '' was a 274 gross register tonnage collier converted to a

Q-Ship Q-ships, also known as Q-boats, decoy vessels, special service ships, or mystery ships, were heavily armed merchant ships with concealed weaponry, designed to lure submarines into making surface attacks. This gave Q-ships the chance to open f ...

of the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

during the

First World War World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...

. In the afternoon of 24 July 1915 off North Rona in the

Outer Hebrides The Outer Hebrides () or Western Isles ( gd, Na h-Eileanan Siar or or ("islands of the strangers"); sco, Waster Isles), sometimes known as the Long Isle/Long Island ( gd, An t-Eilean Fada, links=no), is an island chain off the west coast ...

, ''Prince Charles '', commanded by Lieutenant William Penrose Mark-Wardlaw, sank the German submarine . The sinking was the first by a Q-Ship working alone without the assistance of a British submarine. ''U-36'' was a type 31 submarine commissioned on 6 June 1914 under the command of Captain E. Graeff. By July 1915 she had sunk 14 merchant ships and taken three more as prizes. On the day she was sunk, ''U-36'' had just stopped and boarded the Danish vessel SS ''Luise''. The boarding party was in the process of dumping her cargo when a lookout sighted an approaching steamer. ''U-36'' sailed towards the disguised ''Prince Charles'', fired at her, and ordered her to stop. ''Prince Charles'' complied, swinging out her boats. The unsuspecting submarine came within about 600 m of ''Prince Charles'' when ''Prince Charles'' hoisted her naval ensign and commenced firing. ''Prince Charles'' scored a hit on the conning tower of ''U-36''. She dived but then quickly resurfaced. By this time ''Prince Charles'' was only 300 m away and was able to achieve more hits. ''U-36'' surrendered, but having sustained heavy damage, sank, taking 18 crew members with her. Fifteen crew members, including Commander Graeff, survived. Lieutenant Mark-Wardlaw received a Distinguished Service Order for the action, and two of his crew received Distinguished Service Medals. The merchant crew of the Q-ship (Master: Frank Norman Moncrieffe Maxwell) was awarded a prize sum of £1,000, to be divided amongst themselves. The Navy later withdrew ''Prince Charles'' from service as a Q-ship because she was small, slow, and relatively unseaworthy. She returned to merchant service after the war, sailing for various owners and under various names. She capsized and sank on 10 December 1944.

References

Q-ships of the Royal Navy {{UK-mil-ship-stub