2015, Gunboat 66
$2,750,000, Fort Lauderdale, FL

Gunboat 66, 2015 catamaran for sale. EXTREME H2O, one of the highest performance cruising catamarans is for sale with Just Catamarans. The owner of EXTREME H2O has authorized a $650,000 price reduction in the last two months. Offers welcome.

As exhilarating as it is luxurious, the ExtremeH20 racing catamaran seamlessly blends breathtaking performance with eye-catching design. Based on the Gunboat platform, but meticulously customized from the ground up–ExtremeH20 truly stands in a category of its own.

Aesthetically arresting carbon fiber appointments throughout the cabin and outfitting the mast, not only provide extreme strength, but also extreme sophistication. All of these structural and technical advancements give ExtremeH2O one of the most powerful rigs of any Gunboat in the world.
The boat features all the state of the art performance enhancements:

- a fully integrated hybrid system, with retractable propeller drives

- push button State-of-the-art Morrelli & Melvin asymmetric "C” foils and “T” rudders

- Southern Spars rotating wing spar, aft beam traveler, tiller steering for racing, mainsheet controls at all steering stations and a powerful sail plan, with a full inventory of high-performance sails - makes “H2O” an extremely fast catamaran, setting the bar for performance racing/cruising catamarans - worldwide.

Speed and performance do not sacrifice the luxury features of this cruising catamaran - which can realize up to 30 knot sailing speeds.

The fully integrated hybrid system will allow you to depart the dock, enjoy a day of sailing and return to the dock without ever having to listen to a diesel motor. Better yet, you can enjoy a tropical night at anchorage with 30,000 BTU of air-conditioning without the noise of a generator.

Design Philosophy:

“Extreme H2O” is arguably one of the highest performance cruising catamarans, worldwide. A product of the Morrelli & Melvin Design & Engineering design office, “H2O” was optimized for performance throughout a wide range of wind conditions.

This powerful sail plan is managed with advanced sail handling systems in both the forward cockpit with 4 high speed hydraulically driven winches and at all steering stations with push button mainsail

Design evolution:

Morrelli & Melvin's designed the “C” foils to provide up to 4,000 kg of vertical lift and the “T” rudder to reduce pitching when the wave angle is forward of the beam. The “T” foils are removable while the boat is in the water so the boat can be easily configured for optimum speed and comfort.


“Extreme H2O” began construction in South Africa by Gunboat. After the Gunboat closed its doors, the boat was moved to the US and completed by Westerly Marine - a custom boat builder, founded in 1970, and located in Santa Anna, California - specializing in Carbon Fiber Performance Vessels. Over 56,000 hours were required to complete the boat to certified standards.

Hulls: Carbon inner skin and outer skin / 25mm Corcell Sandwich

Cabin: Carbon inner and outer skin / Nomex honeycomb and Corcell sandwich

Cabin soles: Carbon / Nomex honeycomb sandwich

All secondary taping Carbon fiber / Epoxy and post cured

All laminates vacuum-bagged and post cured.

Energy Efficiency:

All of Extreme H2O power requirements such as refrigeration, instrumentation, lighting, winches are run easily run from the battery bank. The large inverters allow the use of Aircon throughout the night without the use of generators. The boat has a battery operated powering range of 45 minutes without the use of generators.


Manufacturer: Gunboat
Draft: 15' 9"
Fuel Capacity: 150 gal
Designer: Morrelli & Melvin
Condition: Used
Hull Material: Carbon/Corecell Composite
Number of Engines: 2
Engine Make: Volvo D2-40 Hybrid Drive
Engine Power: Other






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