Nice article Colin, splendid set of images, thank you.
Now I will add Portsmouth to my list of visits for some time soon, we really enjoyed Chatham and Hartlepool. Actually, we are going via Portsmouth to France in August next year, so could delay the return home by a day or two and take this in. Now how to explain that one?
I like the last shot, the frames set up for the clinker build. The Australian Balmain bug builders used a very similar technique at a smaller scale, making a strong "picture frame" and setting the frames within that. It meant that both sides could be planked together and access was available under and over the build. That's always a problem when building on a board, as most builds are with the boat upside down without access to within the hull till the planking is completed.
Thanks again, aye, Kimmo