[Title: Contrôle de la navigation fluviale] (Supervision of Navigation on the Saint-Lawrence): two shots of naval officer boarding ship, reading message, cut to ship's whistle blowing. LAS of bridge of corvette. Cut to ice breaking as ship moves through. Various shots of soldiers on deck, sailors. Boating shot of Quebec City skyline. MLS of corvette in Saint Lawrence, town in background, deck and mast of camera boat in foreground. HAS ice breaking as ship moves through. Deck of corvette, two officers on it; buildings on shore in background. A man slips hawser over bollard, soldiers clamber up on pier and sailors hand them supplies. Final shot of sailors getting their supplies hauled away by horse-drawn sled.