Merchant Marine in Montreal Harbour: shots of freighter "Kronoborc" moored to pier in Montreal Harbour. Sequence on considerable activity in harbour as stevedores load ships with supplies, move supplies about on miniature tractor train pulled by small electric trucks. MLS of crewman traversing heavy deck gun for benefit of camera. Shot of stern of ship, deck gun in evidence, a few men visible farther into ship. Closer shots of deck gun, two crewmen checking mechanisms.