i have come to realize my 65' cat will weigh 70 ton when finished.
has anyone ever built a boat out of steel and wood?
That doesn't sound out of line. I spent a lot of cruising time on a 50' steel mono-hull that weighed in around 32 tons. The 64' steel mon-hull that I cruised on was around 35 tons, so dead on after you subtract some for each hull
and then add in the rest.
Your comment about the weight makes me think of something out of the movie
Waterworld, though! Be sure to leave room for the gun-mounts.