Great Scott and a warship, not a car. He portrays skipper in this account of Atlantic convoys going to Russia. After having lost a ship to U-boats, Scott returns to Canada where he meets Raines who reluctantly falls in love with him; her older brother has been lost at sea and she's wary of becoming involved with a sailor. Scott is given command of a brand new ship, Corvette K-225, and takes Raines's younger brother, Brown, on board to make a seaman of him. The convoy to Russia includes many scenes taken from actual combat footage; Rosson's lively direction and the realistic script does much to make clear Canada's deep involvement in WWII, something that had been generally ignored by Hollywood in its fever to promote US war films. Rosson and Gaudio, his veteran cameraman, went to sea for three months, hazarding the U-boats in the Atlantic, to get background footage, and combat lensing was by Harry Perry, who had gone on several corvette convoys to capture astounding battle shots. The result was an excellent production that still stands up today, unlike many of the propaganda films the studios churned out in the 1940s.