I have an opportunity to build the 40 meters long boat of meranti stone wood in Sumatra/Indonesia. So I would like to know the maritime characteristics of said wood, the life time, comparison with mahogany. Meranti stone I suppose is dark meranti wood, dark red color? Please advise for such big solid boat what distance in between the frames should be, as well what thickness of said frames, as well thickness of keel. Meranti is compatible with steel nails or not, or for building should be in use brass nails/screws? Thks, Timm.