TILT UP from Red Ensign to rotating radar scanner of icebreaker "Labrador". Longer shot of mast, radar scanner. Two shots of captain Clarke on bridge of icebreaker. Shots of radio officer of icebreaker "D'Iberville" typing, sending message. CU of his hand on morse key. Shot of captain Cuthbert of icebreaker "John A MacDonald" on the phone. Interior shot of wheelhouse of icebreaker "Wolfe". Shots of engineer of the "John A MacDonald" checking gauges in control room. Interior shot of spacious wheelhouse of the "John A MacDonald".