New Vs Old
I've got a 1969 Cal 36 Cruising. I spent 18 months renewing the interior structure and furniture with modern materials so she's good for another 40 years. The hull is over a half an inch thick of solid GRP laminate .... not bad. My problem is that a boatyard down here in Trinidad allowed another yacht to fall on her when she was on the hard ..... she's a constructive total loss.
Modern built boats with internal mouldings that are part of the hull structure have very thin hulls. If the bonding breaks down between the inner and outer hulls you might not have a boat worth a $1. I doubt if these boats are going to last 40 years .... so depreciation can be quite large if you're the one left owning the boat with the hull mouldings separating ..... a little like 'pass the parcel'?
Any boat I own will be single skin FRP, composite, or metal. Hidden structural joints are not acceptable to me, especially as I cross oceans in my boats.