The plane then observed the damaged boat for 55 minutes before an explosion seemed to finally settle the matter.
[5] In September 1942, Eastern Air Command stationed a detachment of 113 Squadron aircraft at RCAF Station Chatham as the "Special Submarine Hunting Detachment" in order to provide air cover for convoys in the Gulf of St. Lawrence.
U-boats had begun to infiltrate the St. Lawrence that May, and had already scored some notable victories without a loss, however, the increased air cover allowed Canadian forces to mount a vigorous anti-submarine defense.
The first attack by a 113 Squadron aircraft on a U-boat took place near Anticosti Island on 9 September, when Pilot Officer R.S.
On 16 September, Keetley launched an attack on U-517, but despite getting a depth charge lodged on its deck, the U-boat escaped unharmed.