British submarine HMS K.5 lost according to the Weekly Intelligence Summary No. 3 dated 22 January 1921

An item dated 20 January reported that the British submarine HMS K.5 sunk on the position 48.51.5 north and 90.5 west without survivors.(1)

Note

1. Part of K-class steam-propelled submarines nicknamed Kalamity-class, laid down on 13 November 1915, launched at Portsmouth dockyard on 16 December 1916 and commissioned on 1 June 1917.

Source

The National Archives, Kew Gardens, England CAB-24-118-88