German submarine U-18 (1935)
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German submarine U-18 was a Type IIB U-boat of Nazi Germany's Kriegsmarine during World War II. It was laid down 10 July 1935 and commissioned on 4 January 1936. It served in many U-boat flotillas during its service.
U-18 being re-assembled at Galați, Romania
ORP Sęp (1938)
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ORP Sęp was an Orzeł-class submarine serving in the Polish Navy during World War II. In Polish her name means Vulture.
ORP Sęp in Sweden 1939.
105 mm gun from ORP Sęp displayed in the Polish Army Museum
100 mm Soviet cannon that ORP Sęp was rearmed with after the war, on display at the Polish Navy Museum in Gdynia