They made the Ultimate Sacrifice


John Kingsford Herbert Mason


Lieutenant, O-46990, RCN


Born: 28 Aug 1921, Toronto, Ontario


Died: 17 Apr 1952 at sea


Book of Remembrance


MASON, John Kingsford Herbert, Lt, O-46990, RCN, died - 17 Apr 1952, HMCS CRESCENT - Son of Douglas Herbert and Dorothy (nee Kingsford) Mason of Georgetown, Ontario. Husband of Elizabeth de Lisle (nee Robinson) of Father of Marion Thonia Mason, David Douglas Herbert Mason, and Philippa Kingsford Mason.


Lieutenant Mason was one of seven naval men who lost their lives, on the night of 17 April 1952, when two Avenger aircraft crashed into the sea off the southern coast of Nova Scotia. Based in Shearwater the aircraft were performing a search and strike exercise in poor visibility; it is believed the two Avengers collided before crashing. 


The seven seamen who perished in this accident were:

Lieutenant John Edward Peter ANDERSON

Lieutenant William James HUTCHINSON

Able Seaman William John Demy HUNTER

Lieutenant John Kingsford Herbert MASON

Able Seaman Douglas Sydney MOFFAT

Lieutenant John Sydney MURPHY

Sub-Lieutenant Phillip Joseph Albert PLOTKINS


Ships served in:


HMCS CRESCENT - Appointed to CRESCENT 13 Oct 1951 as a Lt, RCN, XO (Navy List Apr 1952)



Articles on the deaths of the 7 aircrew



In Service of Canada - RCN Peacetime Casualty Index