0 a large mass of ice floating in the sea that has been formed by smaller pieces of ice being forced together
A float-plane was taken aboard and transported to the edge of the pack ice where it took off.
We can't get out yet, pack ice too thick.
We went through fields and fields of pack ice.
We set up the tent over the pack ice apparently solid.
All on board are hopeful we can get out of pack ice and into the sea ice today or tomorrow.
The pack ice extended unusually far south and this curtailed the length of the cruise and made working at sea quite difficult.
They all stayed north of the belt of pack ice.
Grant appeared to be very nervous and was clearly upset when the vessel approached the edge of the pack ice.
