Included in HMS Thrasher's 13th Patrol report 6th - 28th October 1942 is an attack to which the identity of the targets is not recorded.

25th October 1942
03:40 in position 3606N2515Esighted 2 merchant ships (3,000 tons) and 3 destroyers. Altered course towards.
04:22 fired 4 torpedoes on a 140 degree track, range 5000 yards. All torpedoes missed. The tracks were seen and 2 destroyers hunted. 3 distinct charges being dropped at 05:00.
06:00 1 destroyer proceeded to the north east.
06:20 the remaining destroyer in contact on asdic.
06:28 the first 2 depth charges - a very accurate attack. between 06:38 and 08:00 6 accurate attacks were carried out.
12:00 periscope depth - nothing in sight.
15:55 the same destroyer, either proceeding to Rhodes or still searching, passed 2 miles to the south.
19:31 surfaced and proceeded through the Scarpanto Channel at full speed.
22:30 set course for Beirut

This incident is not currently shown in the page for HMS Thrasher. can anyone identify the ships involved. I have a copy of the patrol report but it is a jpeg picture.