Argent, between the flanches gules, a torteau charged with a Whitethroat bird volant proper, and issuing saltirewise from the torteau four trident heads sable.
(Glossary of Heraldic Terms)
This badge design utilizes much the same design as Bluethroat's badge does in depicting the mines that this ship was called upon to lay. The tridents are used to indicate that minefields can give all-round protection from attack.
Whitethroat was commissioned into the RCN in December 1944. She was paid off to become a civilian-manned auxiliary vessel (CNAV) in May 1946. Recommissioned for a short time, between April 1951 and September 1954, she wore pennant 113.
Red and White
Atlantic, 1945.
Badges Of The Canadian Navy by Arbuckle, J. Graeme. Halifax: Nimbus Publishing, 1987.