It's 1940. German forces are prevailing over Allies across Europe. The crew of the Polish submarine, now serving in the Royal Navy, is waging a heroic fight against the invisible enemy.
as Jan Grudziński
as Andrzej 'Pablo' Piasecki
as Marian Mokrski
as Jerzy Sosnowski
as Florian 'Trzonek' Roszak
as Henryk Kotecki
as Klops
as Henryk Kamiński
as Alojzy Engelbert 'Stołowy Lolek' Gettka
as Stanisław Uliczny
as Zbigniew Kawa
as William Fordyce Green
as Jan Torbus
as Stanisław Samotus
as Emil Krystek
as Ignacy 'Kucharz' Świebodzki
as Jan Szal
as Aleksander Kamecki
as Leslie William Jones
as Jan Olejnik
as Jan Olejnik (voice)
as Wacław Foterek
as Eryk Sopoćko
as Wacław Szubert
as Teodor Pokrywka
as Paweł 'Bokser' Czopp
as Kazimierz Mazurkiewicz
as Tonia