General Marine Leasing has worked closely with numerous clients over the last 17 years designing and fabricating United States Coast Guard (USCG) Approved Units designed and crafted to exact USCG standards and guidelines. External walls are constructed using strong 1/4 inch crimped plate steel. Internal walls are constructed with 16 gauge 2 1/2 metal framing and all Exterior Doors are Class A A-60 rated. Each building is insulated with 3 inches of 8 pound density flame retardant rock wool insulation. These units are available in a wide variety of layouts and designs and can be individually designed and fabricated for a specific projects.