The submarines were to operate near the Polish coast, in the area of the Danzig Bay and the Hel Peninsula. They were to conserve their limited munitions for "significant military targets" (destroyer or larger) shelling the Polish coast or attempting to land forces on it and interdict naval traffic between the German mainland and East Prussia. "Wilk", "Ryś", and "Żbik" were to mine the Gulf of Danzig. The plan explicitly stated that the submarines were to act according to international law, and single, unarmed ships had to be warned before being attacked.