Allied escort ships, including the Canadian corvette HMCS Hawkesbury (foreground) encounter sea ice off the Newfoundland coast.

Relatively thin sea ice like that pictured here was not tremendously dangerous, but thicker, larger accumulations could interfere with movement and damage ships. Icebergs drifting south from the Arctic could also be a threat, particularly off the coasts of Newfoundland and Labrador.

George Metcalf Archival Collection
CWM 19900279-001_14