Characteristics of German submarine U-25 as reported to the British Admiralty on 21 April 1936

An item reported that the German Marineattaché captain Erwin Wassner at London informed the British Admiralty conform the Anglo-German Naval Agreement dated 18 June 1935 that the submarine U 25 laid down in July 1935 was completed on 6 April 1936. Standard displacement (article 6 of Treaty) 712 tons/723 metric tons and as dimensions 71.0 (waterline) x 6.2 (extreme beam at or below waterline) x 6.2 (average draught at standard displacement) metres. Heaviest calibre 10.5cm.

Source

Bundesarchiv. German Marineattaché at London. RM 12-II/119.