pack ice

The ship was built at a yard in Finland, but had to be moved to Scotland before winter over concerns it could be damaged by pack ice.

The ferry has been built at a shipyard in Finland but it has to be moved out before winter because it could be damaged by pack ice.

Endurance became stuck in pack ice within weeks of setting off from South Georgia.

Historically in winter, the gulf’s pack ice transforms into the southernmost whelping grounds for harp seals—an ice nursery for newborn pups.

In January 1932 its strength was tested when it was caught in heavy pack ice in the Weddell Sea, not far from the spot where Shackleton's ship Endurance was crushed and sank 16 years earlier.