Various shots of Dome Petroleum "Canmar" supplier ships making their way through ice in Beaufort Sea, opening channel for drill ships, including shots of pieces of ice floating or giving way as ship slices ahead, of splashing water. AERIAL SHOTs of same. AERIAL SHOTs of fleet of drill ships moving through ice on channel made by icebreakers. AERIAL SHOTs of drill ships fleet anchored at sea surrounded by lighter ice.