Captain James Douglas 'Chummy' Prentice was a Royal Navy and Royal Canadian Navy officer who served with distinction in the Battle of the Atlantic. In addition to being credited with the destruction of four U-boats while at sea, he also played a significant role ashore in training the often inexperienced recruits required by the RCN to fulfill its expanded wartime role. Prentice finished the war as a full Captain. After a time as Aide-de-Camp to the Governor General of Canada, he retired in 1946. He died in British Columbia in 1979.