The complete title including subtitle is "Der kleine U-Boot-Kommandant auf großer Fahrt nach Engelland" meaning "The little U-Boat-commander on his speed to England". This may be the first U-Boat game ever being published 1940 and certainly inspired by the previous successes (real and propagandistic) of the German submarine force.
Aim of the game is to shoot enemy vessels with a spring driven torpedo.