SHETLAND OWNERS ASSOCIATION

Hi just bought this 536 personnel carrier number 349, does anyone have an idea of the age,and how many of these were built? It seems it original condition but is it need of some work, deck feels soft so suspect foam is waterlogged, hoping to have it seaworthy in the next few months, any advice appreciated

cant help with the age mate
but a mate of mine had one and there a great sea boat.
best of luck with her