British warships Castor and Walrus arrived at Copenhagen, Denmark according to the Weekly Intelligence Summary No. 5 dated 5 February 1921

An item reported that the British light cruiser HMS Castor (1) and destroyer Walrus (2) arrived at Copenhagen, Denmark coming from Libau [nowadays Liepāja, Latvia].

Notes

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.

2. D24. Building ordered in December 1916, laid down by Fairfield Shipbuilding and Engineering Company, Govan, Scotland in February 1917, launched on 27 December 1917, completed in 1918, commissioned on 8 March 1918, wrecked on 12 February 1938, sold and broken up in October 1938. Admiralt W-class destroyer, preceded by S-class succeeded by Thornycroft type destroyer leader Ambuscade and Amazon.

Source

The National Archives, Kew Gardens, England CAB-24-119-53