2/2/1942 attacks on the Nore Command

[nicknobbyclark]

I am trying to find out which Luftwaffe unit carried out the attack on February 2 1942 attacks on the Nore Command Grimsby and Yarmouth M/S and patrol trawlers were attacked on station by at least twenty planes, and Grimsby's Cape Spartel and Yarmouth's Cloughton Wyke were sunk.
I am helping a veteran who was with this flotilla at the time and witnessed the sinking of Cloughton Wyke. For many years he has wanted to find out what type of plane sunk the ship? He remembers it being a twin-engine bomber.
Can anyone help me with this or recommended how I can research this incident?

Nick Clark