two ships = 2 heightmaps and 3rd heightmap for water with separte color/reflection/transparency
16bit heightmap - ship
https://goo.gl/jZIuZyfor water take a "leather" texture:
https://www.google.de/search?q=leather&biw=1240&bih=888&source=lnms&tbm=isch&sa=X#q=leather&tbm=isch&tbs=isz:lt,islt:8mpMandelbulb3Dv18{
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