Hi Nigel and welcome to the Forum -
I don't think we can help you - the logs, in general, don't mention anything about the furnishings and decorations of the ships. I think the place to go for assistance would be the Great War Forum. There is a section on ships and navies and someone there may have pictures and information on the carvings. Also, did you mean Foo Dogs (lion dogs, fu dogs) - the temple dogs in China? I would love to see pictures of what you have, because I have only seen the Dogs as statues, not as wall plaques.
Good luck with your search - there may be someone here who can give you more information.