Here’s one I wasn’t aware of, probably because it’s not in an advanced state of decay! This is the SS Calshot, a tug tender built at, and  used on, Southampton docks during the era of the great ocean liners – Queen Mary, Queen Elizabeth, Normandie, United States, etc. Although it was open to the public, I didn’t get chance to go onboard unfortunately. It looks in reasonable cosmetic condition, but apparently requires more work before it takes up position in a new museum on the docks in 2015. Some more info and pics here:

http://www.tugtendercalshot.com/

http://www.classictugs.co.uk/tug_tender_calshot_restoration.html