Register of Deceased Seamen on Effna
When doing genealogy research on my 2nd cousin x1 removed, James Owen Pearson (Radio Officer on the SS Effna), I found the Register of Deceased Seamen for the Effna on Research your family tree and family history today | Findmypast.co.uk. I'll be happy to e-mail scans of the 2 pages to anyone who requests them. Since I have no idea whether there are copyright issues, I don't think I can just upload these to your website.
This register provides the name, age, rank, birthplace, last place of abode (+/- next of kin), cause of death (all shown as "Missing -- supposed drowned"), a remark of "Missing since 1st March 1941. List sent 29/9/41", and Official Reference of "C (or ?B) & D".