Base: Davidstow Moor
Take off time: 0206 hrs
Op: Escort to OS51 & KMS20

According to the book Endurance (Alwyn Jay).. On this date, F/L Murray Charlton and crew made an inconclusive attack on a U-boat whilst on patrol in the Bay of Biscay.

rafdavidstowmoor.org: States that

"T/O D/M 0206hrs on escort to KMS20 & OS51. Met and escorted for 4hrs 39mins to position 43N – 15W. At 0824hrs, SE [radar] contact 010/RED, 15 miles distant. Captain dived aircraft towards U-boat which crash dived and appeared to alter course 20' to port. Aircraft crossed ahead of swirl and dropped 4 DCs about 1 – 2 swirl lengths ahead of diving swirl. Last DC exploded about 170ft ahead of the apex of the swirl. No results seen. Landed Aldergrove 1840hrs." AIR27-555 (ORB)

No ships were lost although the Twickenham (carrying coal) of OS-51 was damaged by U135 on July 15, between the Canary Islands and Morocco. Following the attack on Twickenham, U135 was sunk by naval and air strikes the same day.

During WWII, the RAF used three-letter codes to identify their aircraft from a distance. Two large letters were painted before the roundel, which signified the squadron to which the aircraft belonged, and another letter was painted after the roundel which indicated the individual aircraft. Aditionally, there was the individual serial number for each aircraft, which was painted in a much smaller size, usually somewhere at the rear of the aircraft: (more)

Codes used by RAF 59 Squadron:

PJ Sep 1938 - Sep 1939
TR Sep 1939 - Oct 1942
1 Aug 1943 - Jul 1944
WE Jul 1944 - Oct 1945
BY Oct 1945 - Jun 1946, Dec 1947 - Oct 1950