1989 Jefferson Grand Marquessa

This 65-foot Jefferson Grand Marquessa is a rare motor yacht, believed to be the only example of this model ever built. Twin Caterpillar C-18 ACERT diesel engines deliver 2,272 horsepower, repowered in 2012 and currently running 1,904 and 1,914 hours respectively. The yacht cruises at 10 knots and reaches 21 knots at full throttle. Recent upgrades include a new 21-kilowatt generator installed in April 2026, fresh bottom paint applied in June 2026, and air-cooled HVAC units throughout.

The accommodations feature a four-stateroom layout designed for extended cruising and entertaining. The main salon is spacious and open, flowing to a covered aft deck equipped with a stainless-steel refrigerator, sink, and room for gatherings. The flybridge provides expansive seating with excellent sightlines. A covered side deck walkway with high rails runs the length of the boat, facilitating safe access for docking and line handling.

The yacht is outfitted with Garmin electronics, Starlink internet, and modern entertainment systems. Oil and filters were changed in June 2026. Interior upgrades have been completed throughout, and the boat has been continuously maintained by experienced professionals. The fiberglass hull is in sound condition, having been actively cruised along the East Coast and wintered in Key West.