Shot of Captain Cuthbert of icebreaker "John A Macdonald" answering radio telephone, checking with navigator. MS of navigator, of map on which he is working. Various LSs of freighters moving in open water, moving through ice. HASs of ice taken from deck of moving icebreaker. Various shots of freighters stuck in ice. AERIAL SHOTs of freighters, of icebreaker smashing through ice field. Shot from helicopter landing on "bull's eye" on stern of icebreaker, pilot's hand visible at right, jockeying joystick. Shots of crew servicing helicopter. LAS of mast, flag flying. TRAVELLING SHOTs of ice from icebreaker's deck. Shot of the icebreaker's crew clearing snow off deck, preparing helicopter for take off. HAS of helicopter taking off. LAS of forward part of icebreaker superstructure, mast, of freighter in the distance as seen through porthole, as seen from icebreaker's deck. HAS of bow of icebreaker moving through ice from crow's nest, TILT UP to distant reflection of sun on ice. HAS of bow of icebreaker, TILT UP to distant freighter moving in open water. (00/03/1961)