U.S. icebreakers serve to clear passages through icy waterways. Their reinforced hulls are designed to break apart the ice, ...

Icebreakers provide assured United States access and presence to the polar regions, the U.S. Coast Guard said.

He's only days into his attempt to reach the North Pole-and things look as grim as they've ever been. Plaisted and his team of amateur explorers have endured fuel shortages, howling storms, and ...