Design of the Cambrian subclass was based on the earlier light cruisers HMS Champion and HMS Calliope, which, in turn, were based on the Caroline subclass, using the same hull as the Carolines but with two funnels and a maximum armor thickness of 4 inches (102 mm) as opposed to 3 in (76 mm) in the Carolines.
On 4 October 1917, the United States Navypatrol vesselUSS Rehoboth suffered an uncontrollable leak in her hull while on patrol duty off France. Rehoboth's crew had to be taken off, and Castor sank her with gunfire.[4]
Castor underwent a refit from November 1925 to September 1926, then began transporting troops to China in October 1927. She recommissioned at Devonport in June 1928 to serve on the China Station. She entered the Devonport Reserve in July 1930, then was decommissioned in May 1935.[3]
Disposal
Castor was sold on 30 July 1936 for scrapping and arrived at the shipbreaker's yard at Rosyth in August 1936.
Notes
^Colledge, J J (1972). British Warships 1914–1919. Shepperton: Ian Allan. p. 48.
^Dodson, Aidan (2024). "The Development of the British Royal Navy's Pennant Numbers Between 1919 and 1940". Warship International. 61 (2): 134–66.
Preston, Antony (1985). "Great Britain and Empire Forces". In Gray, Randal (ed.). Conway's All the World's Fighting Ships 1906–1921. Annapolis, Maryland: Naval Institute Press. pp. 1–104. ISBN0-85177-245-5.