Fishermen's navy: shots of crew climbing cliff from dories with the aid of ropes during training exercise. MS from a boat moving away from shoreline in background. Grey skies clearing in background. Overhead shot of two sailors preparing depth charges. Shots of converted navy patrol vessels at sea - small, fishing boat type craft. MLS of sailors drilling on dock - two boats in background. More shots of patrol vessels at sea. HAS of sailor knitting a carryall on deck of boat. MS of skipper receiving message while on bridge, giving orders to his crew.