Operacja Worek

Descripton: History of Polish submarines in the September 1939 campaign against Nazi Germany, plans for defensive operation "Worek" (meaning "Sack" or "Bag" in English) and the reality – uphill struggle against superior surface and air ASW forces. Five Polish subs bagged no German ships sunk, but managed to survive and go to internment in Sweden (three) or to fight their way to Britain (two).