Built in the 1950s, the Porte Class were designed specifically to operate the gates in anti-submarine booms. Later they were used primarily as peacetime training vessels for Naval Reserve personnel.
The Gate Class were named for gates that exist in the French fortifications of Quebec City and Louisburg.
Porte Quebec was based in Esquimalt BC.
40 mm removed and vessel later used as training vessel. Refits increased bunking capacity to 47.