Engine
CUMMINGS QSB 8.3m
Total Power
1000hp
Engine Hours
-
Class
Power Catamaran
Length
23.77m
Year
2027
Model
Long Island 78
Capacity
-
Denison Yachting - Monaco
Boat Details
Description
The Long Island 78 Power is a long-range cruising catamaran built by JFA Yachts and designed by Marc Lombard. It features aluminum hulls and composite deck and superstructures for reduced weight and improved efficiency.
Powered by two 500 hp engines, the yacht cruises at 12 knots and can reach up to 18 knots. Its lightweight construction allows for moderate engine size, reduced fuel consumption, and transatlantic range.
The layout includes a galley, salon, dining area, and chart table in the central nacelle. The port hull contains a large owner’s suite and a guest cabin, while the starboard hull includes three guest cabins. An enclosed wheelhouse is located on the flybridge, with a banquette and desk offering panoramic views.
Exterior spaces include a lounge and sea-water bath on the forward deck, a large cockpit aft, and a flybridge area with seating, dining space, and a small kitchenette. Interior and exterior styling is by Franck Darnet Design, featuring a mix of oak and darker wood tones.
Contact Information
Other Details
About the Shipyard
JFA Yachts – A Legacy of Passion, Innovation and Craftsmanship
Founded in 1993 by Frédéric Jaouen & Frédéric Breuilly and located in Concarneau, France on Brittany’s southern coast, a region with centuries of maritime heritage.
Today, they are custom boat builders, with expertise in large refit projects as well as new construction, capable of delivering custom yachts up to 60m, across both sail and power. With a proven track record of delivering yachts of the highest quality, in any choice of material, whether it be GRP, Carbon, aluminium or steel, their recent launches have withstood the rigours of navigating around the world, including trips to the polar regions.
JFA Yachts’ first new construction project, delivered in 1993, was the 75-foot aluminum sailboat “Kermor”, reflecting the founders’ roots in performance sailing yacht construction and echoing their first love.
In 2001, JFA expanded into custom motor yachts with the launch of “Axantha”, a 122-foot explorer yacht followed by the highly acclaimed 42-meter Bystander in 2003. This project marked a turning point, demonstrating JFA’s ability to build complex yachts over 500 GT under Lloyds classification and MCA regulations. Bystander later won “Best Motor Yacht of the Year (32–43m)” at the 2006 International Superyacht Society Awards.
JFA continued to push boundaries with the 2012 delivery of “Mousetrap”, a 33-meter carbon-fiber sailing catamaran, which later inspired the creation of the Long Island Catamarans range. Since then, yachts like WindQuest (2014) and NDS Evolution (2018) have embodied JFA’s spirit of adventure and technical innovation — the latter having reached Antarctica.
Having now completed 30 new builds and 40 refit projects, their expertise and unwavering passion for the sea, combined with a family environment will ensure that your construction project is a unique experience of mutual cooperation, as best reflected in the founder’s motto:
“we don’t build a yacht for a client, but with a client”
Technical Details
LOA: 23.72 m/77.8 ft
LWL: 23.06 m/75.6 ft
Beam: 11.17 m/36.6
Draught: 1.24 m/4 ft
Naval Architect: Marc Lombard Yacht Design Group
Interior Styling: Darnet Design
Cruising Speed: 12 knots
Top Speed: 18 knots
Displacement: 54 t light
Construction: Aluminum hull and glass-epoxy infusion composite deck
Interior: Modern interior joinery style, oak and walnut
Paint System: Awlgrip flag, blue hulls and snow white superstructure
Classification: CE Compliant – MCA MGN 280 Compliant
Guests: 8
Staterooms: 4
Heads: 4
Crew: 3
Crew Cabins: 2
Crew Heads: 1
Main Engines: (2) Cummins QSB 8.3m - 500 hp
Propeller: 5 blades - 720 mm propellers
Generators: (2) Onan 17.5 kW 50 hz
Fuel Capacity: (2) 4,000 liters/1,056 gallons
Water Capacity: (2) 800 liters/211 gallons
Grey & Black Water Tank: 300 liters + 300 liters (79 gallons + 79 gallons)
Additional Details
BOWTHRUSTER
1 X ELECTRIC RETRACTABLE
STEERING SYSTEM
HYDRAULIC STEERING LECOMBLE & SCHMIDT
WATERMAKER
1 X SEARECOVERY AQUAMATIC 1800
CAPACITY OF 285 L/H - 1X SEARECOVERY
24 VOLT UW600 - 100 L/H
FIRE EQUIPMENT
SALTWATER FIRE FIGHTING SYSTEM, PORTABLE FIRE EXTINGUISHERS NOVEC FIRESYSTEM IN ENGINE ROOM
HVAC
FRIGOMAR FANCOIL SYSTEM, FLOWTHROUGH
HEATER, CHILLER + FUEL
HEATER EBERSPASHER
ELECTRICAL SYSTEM
230V 50 HZ - 12KW ASEA SHOREPOWER, SERVICE BATTERY BANKS 720 AH LITHIUM-ION MASTERVOLT FOR THE 24 VDC POWER SUPPLY SOLAR PANNELS ON THE WHEELHOUSE ROOF
NAVIGATION
B&G (GPS, MULTIFUNCTION REPEATERS & SENSORS, RADARS, AUTOPILOT)
COMMUNICATION
B&G (VHF, AIS), VSAT, IRIDIUM, FBB 250
ENTERTAINMENT
SONOS AUDIO, SAMSUNG TV
EXTERIOR
FLEXITEAK 5 MM
HATCHES
LEWMAR
ANCHOR SYSTEM
LEWMAR WINDLASS & DELTA TYPE
ANCHOR
PASSERELLE
BENZENZONI 3,5 MM
TENDER
TENDER UP TO 4,6 M - 650 KG
TENDER LAUNCHING SYSTEM
TENDER LIFT PLATFORM SYSTEM
Disclaimer
The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.
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Propulsion
Engine 1
Engine Make:CUMMINGS
Engine Model:QSB 8.3m
Total Power:500hp
Engine Type:Inboard
Fuel Type:Diesel
Engine 2
Engine Make:CUMMINGS
Engine Model:QSB 8.3m
Total Power:500hp
Engine Type:Inboard
Fuel Type:Diesel
Specifications
Speed & Distance
Cruising Speed:12kn
Max Speed:18kn
Dimensions
Length Overall:23.77m
Beam:11.17m
Length at Waterline:23.06m
Miscellaneous
Hull Material:Aluminium
Tanks
Fresh Water Tank:1597 l
Fuel Tank:7997 l
Holding Tank:
Accommodations
Guest Cabins:4
Guest Heads:4
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