my dads hobby is ferries, he spends a lot of time corresponding with authors, and has photos in most books concerning uk ferries. he was ports manager for sealink, so had access to a lot of material that was not in the public domain. a few months back he was visited by 2 authors on their way to a cross channel trip. 5 hours later they left, having missed their ferry trip, but overjoyed with what they had seen, and a lot of extra material for their book.
we figured that getting this material out there into internet land saves it for posterity.
Grendel