You have it CAT, it is indeed the Artic Trapper on Saturday 24th August shooting down the Squadron Leader and his number two. Two others were damaged.
The ME109's machined gunned the Trawler, so they unleashed their 12 pound Cannon on the Bombers.At 11:35 am over 500 Bombs and 500 Incendary Devices were dropped on Ramsgate Town and Gasworks.
Manston was on a different approach via Pegwell Bay.
Thank goodness for the Mad Mayors Tunnels.