Hi Mark,
Thanks for your feedback. I have often wondered if there was an early 'kit' out there, or even if the diorama had been made by someone else. I await a quote from a UK specialist but will take a look at the site you suggest. My gg grandfather sailed to Melbourne,Australia, then New York in 1870-71 ( on only his second voyage after one from UK-Quebec) and I obtained a photograph of one of his ships from the State Library of Queensland so there are definitely strong links from those days. But there were thousands and thousands of ships and sailors. I am very lucky in that I have all his ship discharge papers and can therefore plot a detailed chronology.
Meantime, in case of a prohibitive quote, I will file your technical notes for future reference!!
all the best,
tadumac