Cyril Howard Cavil received this certificate of proficiency in anti-aircraft gunnery while he was a cadet officer in the merchant navy.

Cavil took one of the short courses offered to members of the merchant navy by the Royal Canadian Navy, which had established an anti-aircraft firing range and indoor trainer at Sea Island, near Vancouver. In addition to being trained in the firing of the Lewis machine-gun and the 20mm Oerlikon cannon, Cavil, who served in the SS Temagami Park, also learned how to clean and lubricate the weapons.

George Metcalf Archival Collection
CWM 20010110-001

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