On 4 July 1946, Atule headed for the frozen north as a member of Operation Nanook.

On 11 April, she was selected to participate in Operation Nanook, Arctic exercises slated to take place in the summer of 1946.

Operation Nanook may refer to:

Canada conducted similar joint exercises, also named "Operation Nanook", in 2007 and 2009.

Northwinds first major mission was Operation Nanook from 22 July-05 August 1946.

This was the fourth annual Operation Nanook organized by the Canadian Government, but it was the first to host foreign vessels.

During August, the submarine was involved in Operation Nanook 2009.

Operation Nanook was an Arctic expedition undertaken by the United States Navy in 1946.

The Northwind broke ice in support of Operation Nanook.

The command was also the main coordinator of joint exercises, such as the annual Operation Nanook, and a multitude of field exercises and manoeuvres.