The crew of a deep-sea trawler face a series of life-threatening challenges on the open ocean. While the ship battles brutal weather and treacherous icy conditions (the metaphorical "black ice" of the sea),the plot centers on the internal and external conflicts of the sailors.

• Renown Pictures Corporation
• Gordon Jackson
• Ronald Fraser
• Paul Carpenter
• Ewen Solon
• Edwin Richfield
• David Oxley
• George Tovey
• Ben Williams