The Zbik was a French-built Polish submarine of 980 tons displacement launched in 1930. The Zbik was powered by two sets of Vickers-Normand diesel engines providing a top speed of 19 knots surfaced and electric motors providing a top speed of 9 knots submerged. She was armed with one 3.9 inch gun; one 1.5 inch anti-aircraft guns; six 21.7 inch torp...