pack ice

Field ice is a term usually applied to frozen sea water floating in much looser form than pack ice.

To the north, pack-ice in variable amount is encountered before reaching the wide open ocean.

Towards evening the 'Aurora' turned back to open water and cruised along the pack-ice.

When the high wind blew off shore, there was no backswell, on account of the pack-ice to the north quelling the sea.

The north appeared to be filled with frozen sea though we could not be certain that it was not dense pack-ice.