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Mainship Corporation.
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Mainship 31 Sedan Bridge

While the chief attraction of the 31 Sedan Bridge may well be her attractive styling and big flybridge, those who step below will be immediately impressed with the spacious interior packed into this 31-foot hull. Like all sedan bridge designs, the sunken floorplan is the result of moving the engines aft where V-drives permit their installation beneath the cockpit sole. The result is a wide-open interior arranged more or less on a single level from the salon forward. There are two staterooms in this layout, so the galley ends up in salon opposite a big L-shaped settee. Note the double-entry head compartment. Outside, molded steps lead up to the bridge with its wraparound guest seating and unusual portside helm position. With very narrow sidedecks, a convenient walk-thru in the bridge coaming leads to the foredeck. The cockpit comes with molded bench seating, and the entire sole lifts for engine access. Twin 454-cid (340-hp) gas engines will cruise the Mainship 31 at 20 knots and reach a top speed of about 30 knots.

Information courtesy of
PowerBoat Guide

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Specifications
L.O.A 33'3"
Hull Length 31'3"
Beam 11'10"
Draft 2'10"
Weight 16,000lb
Clearance 14'4"
Water 50 gals
Fuel 200 gals.
Hull Type Modified-V
Deadrise Aft NA
Designer Mike Peters
Production 1994-1999