A German U-boat captain disguised as a crewman. He secretly navigates with a concealed compass, survives on hidden rations and a flask of water, and eventually reveals his true identity. The group beats him and throws him overboard after discovering his deception.
Connie initially defends Willi's right to survive alongside the other passengers.
During the debate, Connie argues that Willi should be allowed to remain aboard the lifeboat.
Willi deliberately kills Gus to protect his secret.
When Gus tries to report that Willi is secretly drinking water, Willi pushes him over the side while the others sleep.
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