En route, they were ordered to reinforce the escort group protecting convoy SC 42. On 10 September 1941, Moose Jaw along with Chambly  sank  by depth charges and ramming in the Denmark Strait south of Tasiilaq, Greenland.
En route, they were tasked with bolstering the security force assigned to convoy SC 42. On 10 September 1941, Moose Jaw, along with Chambly, was destroyed by depth charges and ramming in the Denmark Strait south of Tasiilaq, Greenland.