A popular boat with traditional styling and a straightforward aft cabin layout, the Mainship 40 DC was built on a solid glass hull with average beam and fairly high freeboard. Despite her old-fashioned Downeast profile, her performance and interior accommodations are similar to those of a modern motor yacht. the salon is particularly spacious, and the absence of a dinette in this layout is notable and perhaps even a welcome change from the norm. (Instead of a dinette, there's a convenient breakfast bar, which takes up considerably less space.) both staterooms are arranged in the conventional manner, and a tub/shower is fitted in the aft head. An attractive light oak interior replaced the original dark teak woodwork beginning in 1985. Outside, the aft deck dimensions are somewhat confined and guest seating is provided aft of the helm. The Mainship 40 DC will cruise at a respectable 18 knots with standard 350-hp Crusader gas engines and reach a top speed of around 27 knots.