From 2005, this photo shows VIC 27 in the guise of the Vital Spark languishing at Ardrishag. It sat there for many years after use in the BBC Para Handy TV series.
Puffers are the perfect prototype for railway modellers. At 60ft long, they fit into the sort of areas most of us have on our layouts - most other vessels being far too large.They also enjoyed a very long life from the end of the 19th Century with the last commercial boat calling it a day in the 1980s.
Victualling Inshore Craft (VIC) were built during the war based on Puffer designs to service warships that couldn't berth. The design being a small ship with a large hold and a derrek for unloading proved to be perfect and over 100 were built.
The good news is that VIC 27 is now being restored. You can read more on their website.
Years ago, I compiled a list of Puffer models. It's a bit out of date, but have a look.