When was the navy that was donated the LKL "Kursis" (M51) by Germany established?
Lithuanian Naval Force The Lithuanian Navy is the naval arm of the Lithuanian Armed Forces. Though formally established on 1 August 1935 its roots stretch back as far as naval engagements on the Baltic Sea in the Medieval period. Lithuanian naval units saw some service with Soviet naval forces during World War II, and the navy has been re-established in its own right and continues to expand since Lithuania's independence in 1990.
German submarine U-31 (1936) German submarine "U-31" was a Type VIIA U-boat of Nazi Germany's "Kriegsmarine" during World War II. She was laid down on 1 March 1936 as yard number 912, launched on 25 September and commissioned on 28 December 1936.