Ice-sawy tugboat crews keep cargo moving in Alaska

摘要

Capt. Mark Theriault throttled up on Stellar Winds, twin Caterpillar engines but the tugboat stayed firmly in place, its rounded bow pressing against a terminal at the Port of Alaska near downtown Anchorage. The real action was off the stern, where prop wash from the Rolls-Royce z-drives smashed, shattered and otherwise dispersed surface ice up to 6 inches thick.