British cruiser HMS Castor bound for Heligoland and England according to the Weekly Intelligence Summary No. 19 for the week ending19 March 1921

An item reported that the British cruiser HMS Castor was to depart from Copenhagen, Denmark on 22 March bound for Heligoland and Sheerness, England.

Note

1. C-class Cambrian sub-class light cruiser, preceded by Arethusa-class, succeeded by Danae-class, laid down by Cammell Laird, Birkenhead, England on 28 October 1914, launched on 28 July 1915, completed and commissioned in November 1915. decommissioned in May 1935 and sold to be broken up on 30 July 1936.

Source

The National Archives, Kew Gardens, England CAB-24-121-62