Specmar inc (previously specialty marine contractors) is an aluminum boat design, and lofting company. we have a large product line including aluminum drift boats, aluminum landing craft, aluminum monohull boats, aluminum catamarans, aluminum special purpose boats, and aluminum ribs (rigid inflatable boat).. Waverunner 24. steel or aluminum semi displacement hull boat plans & full size frame patterns see more : coastworker 25 wood epoxy, steel or aluminum, fiberglass. displacement or semi-displacement or planing hull boat plans & full size frame patterns. this is the smallest of our coastworker range that extends from just 25 ft to 58 ft - an ideal first boatbuilding project.. Regarding cor-ten, in terms of either yield or ultimate strength, if we're comparing an aluminum vessel having a hull structure of the same weight as the same vessel design having a cor-ten steel structure, it is interesting to note that the aluminum vessel will still be the stronger of the two. this becomes obvious when you consider that aluminum weighs only around 168 lb. per cubic foot.
Munson dive boats are used worldwide for underwater inspections, videography, hazmat, police and scientific dive teams. 1/4 inch aluminum hull plating with. When you look at a boat, you have to remember that the hull is one of the most important parts . if you have a poor design the boat will not be stable, will not float or could lean to one side.. Trawlers . boat plans . kits. cutting files. please note - the designs where there is a yellow background are the designs which cutting files are available..
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