Thank you. It would be nice to see an article about George Clarks on this site. My engine lists are out on loan at present, but since posting my question to you, I've found some original lists that I had forgotten I had, so now I will be able to update details of ships on my lists with Sulzers. The following part lists are George Clark contracts:
Daphnella as you rightly say was a 9RD90, Hawthorn Leslie contract 4252, 20,700 BHP @ 119 RPM
Donacilla was a Winterthur Sulzer
I was surprised to find that between 1961 and 1964 George Clark, NEM built 15 Gotaverken engines
The last Clark RD Sulzer appears to be the twin engine Vistafjord, 9RD68 (contracts 1696 & 1697), in 1972
The last Hawthorn RD Sulzer appears to be the Sea Moon 5RD68, (contract 4279), in 1970
Thanks for posting the engine details. This "propelled" me into raking around amongst old files that have many blank spaces, particularly Gotaverken shaped ones, that can now be filled in.