The hull of the Endeavour 37 is molded as a single unit of a combination of polyester resin and fiberglass woven roving and multi-directional chopped strand fiber (MCSF). The keel is molded integrally with the hull and the lead ballast is contained inside.
The exterior finish is a pigmented gelcoat molded onto the fiberglass. The boot and sheer stripe are also gelcoat molded permanently into the hull. 
The deck and cockpit, like the hull, are molded as a single unit of a combination of polyester resin and fiberglass woven roving and MCSF. Plywood coring is incorporated between the layers of fiberglass in the cabin top, deck, seat, and cockpit sole areas to give additional stiffness. The non-skid finish is molded into the deck. All exterior deck surfaces are a pigmented gelcoat molded onto the fiberglass. 
The joint between the hull and deck is one of the most important assembly steps in the construction of the E37. During assembly, the top integral hull flange is liberally coated with a combination adhesive/sealant. The deck is then lowered onto the hull and fastened in place with stainless steel bolts. When the bolts are tightened, the excess compound is forced into all the crevices and out the sides. The teak cap is then installed, bedded in a heavy layer of the same compound and secured in place, ensuring water tightness.