JFA 135’

by JFA Yachts with Global Explorer Yachts, Overing Yacht Designs and Kirschstein Yacht Designs

This year, French shipyard JFA Yachts, which has its headquarters and production facilities on the coast of Brittany, is due to launch a new 41-metre full displacement motor yacht with a hull in high tensile steel and a superstructure in light aluminium alloy. Bearing yard number 25C, this vessel is the successful conclusion to a fit-out contract signed last year for the completion of a motor yacht that was transported to the yard’s facilities with just the hull and superstructure pre-assembled.

Throughout the various technical phases and the yard works process, from painting and systems installation to electrical cabling and fine furniture making, not to mention final tests and sea trials, the production of this new 135-foot motor yacht has benefited fully from JFA Yachts’ huge experience in the sector, flawlessly represented by the numerous famous luxury super yachts it has created, such as the 122’ Axantha I, the 141’ Axantha II and of course the 133’ Bystander.

JFA Yachts was chosen for the demanding process of completing this 41-metre yacht due to its versatile new builds and the fact that it offers a wide range of specialist craftsmen in-house across many disciplines, as well as working with skilled, renowned international professionals – as was the case with this project, too. A winning partnership of professional design firms, both based in the USA, contributed to the design of the new 135 footer. One is Overing Yacht Design, founded more than 25 years ago and still headed today by Jon Ernest Perelli Overing Senior, which devised the naval architecture and engineering as well as providing a special hull design package based on a very advanced soft chine bulbous bow displacement hull, developed entirely in-house. The other is Kirschstein Yacht Design, led by Michael Kirschstein, which developed the exterior and interior design. For the exterior, Kirschstein developed the look of an elegant, timeless motor yacht with classic lines in a modern interpretation. For the interiors, the firm created a contemporary style whose inspiration is clearly classical, harmonised and coordinated with the exteriors, and distinguished by its luxurious carpentry featuring the extensive use of exquisite American cherry wood for the furniture and bulkheads.

The atmosphere of the interior is underlined by the refinement of sophisticated fabrics and materials in sombre colours, alongside exquisite varieties of marble and granite. The fundamental concept underlying the JFA 135’ design also owes a great deal to another international company, French firm Global Explorer Yachts, which manages new build projects for luxury custom yachts and super yachts for discerning clients. As a global specialist in the trans-oceanic vessel sector, particularly the explorer vessel sector, Global Explorer Yachts offers highly experienced management with well-established shipyards to provide a first-rate professional service with unique yachts that are the ideal combination of world-class design and engineering, tough practicality, high reliability, safety, comfort, elegant style and luxury finishes, with a global range and excellent value.

Darren Nightingale, an Australian by birth and the current general manager of Global Explorer Yachts, has this to say: “To construct a super yacht today, you must have a team with extensive technical knowledge managing the project, from writing specifications and contract negotiations, general arrangement and design, through the entire build process until delivery. One of the biggest issues I find on super yachts today is in the system design, which is where I focus a lot of my time. From calculating machinery space ventilation, correct pump selection for the application, optimum stabilisation sizing, generator size selection, sufficient fresh water and bunker capacity, effective machinery vibration isolation, the items are numerous. We strive to make educated and calculated decisions, and I find my technical background irreplaceable.”

It’s fair to say that it’s a long, complex procedure, carefully managed at every stage and for each project component with attention to the tiniest details right from the very start, namely from the boat concept itself. In the case of the new JFA 135’, for example, Darren Nightingale describes the initial phases of the venture: “We began this project with a simple question: if you could design your ultimate dream vessel, what would that be?” A good question always has a good answer (and vice versa), and the Global Explorer Yachts general manager continues: “Of course it should be a world cruiser that takes you comfortably from Alaska to the Tropics, tough and practical at sea, providing an excellent platform for unforgettable vacations with family and friends. Whale watching in Antarctica, exploring archipelagos in the South Pacific, from the history and glamour of the Mediterranean to the laid-back vibe of the Caribbean. This vessel would offer itineraries full of all the excitement and diversity you could wish for.”

All this was then translated into a detailed project brief prepared by Darren Nightingale’s design team, with these main objectives: “We then identified the goals that we wanted to achieve: a strong build, a high bow and the ability to handle heavy seas; long range cruise ability and efficiency – at least 7,000 nautical miles; four zero speed stabilisers for extra comfort at anchor and underway; a large diesel-powered jet guest tender; an owner’s suite that rivals master staterooms in the 60-metre range; numerous private outdoor guest living areas; luxurious accommodation for 12 guests; separate service stairways and access for crew; comfortable crew quarters (accommodating 8 crew) to promote crew longevity.”

And so on, until the overall final result is achieved. In terms of the technical aspects, the JFA 135’ has a length of 41 metres, a beam of 8.38 metres and a maximum draught of 2.4 metres, while her full load displacement is 393 tonnes and her gross tonnage is 426 GRT. The engine room contains two Caterpillar CAT C32 “B” engines, each with maximum power of 810 kW / 1,100 BHP supplied at 2,100 rpm. The vessel’s cruising speed is 12.5 knots with a range of 4,500 nautical miles, rising to 7,000 nautical miles at the economy cruising speed of 10 knots.

The hull has an elaborate ABT TRAC zero speed stabilisation system with two pairs of lateral fins.

The yacht’s equipment also includes two waverunners, a service tender and a main tender measuring 21 feet / 6.4 metres in length. In terms of layout, the JFA 135’ is arranged across four decks. The sun deck features a sunbathing area with sun beds and sun pads, as well as a swimming pool and bar. The upper deck has an alfresco dining area and a relaxation area outside, while inside there is a sky lounge, a day head, the captain’s cabin and the wheelhouse. A relaxation area features outside on the main deck, while the salon with living area and dining area can be found inside, alongside a day head, the galley and the pantry. The main deck also features the full beam owner’s suite, covering 80 m2 or 860 square feet, with a private office, the master stateroom, a dressing room and two separate bathrooms. Finally, the lower deck is home to the guest area with two twin staterooms and three double staterooms, as well as the crew area with an engineer’s cabin, two crew cabins, the crew galley, the crew dinette and a laundry.

Naturally there is also a swimming platform, which can also be used for landing tenders, and a lazarette with room for a large quantity of equipment for water sports, particularly scuba diving.

Jacob Herzog

JFA 135’ Technical Specifications

Yard no.25C
Type 135’ Displacement motor yacht
ConstructionSteel Hull & Aluminium Superstructures
LOA41 m / 135’ ft
LWL35,9 m / 117’78’’ ft
Beam8,38 m / 27’44’’ ft
Draught2,4 m / 7’9’’ ft
Displacement393 T Full Load
Gross tonnage426 GRT
Range Contractual4500 nm at 12.5 kn, tank test calculations estimate 7000 nm at 10 kn
Cruising speed12,5 Knots
Tanks Fuel79,500 litres / 20,869592 US gallons
Water 10,800 litres / 2,8530582 US gallons
Holding tank8 000 litres / 2,1133764 US gallons
Main engine2 x Caterpillar C32 "B" rated 1100 BHP (810 KW) at 2100 R.p.m
Generators1 x 65 kW + 1 x 40 kW NORTHERN LIGHTS @ 1800 rpm, 380 V
Electrical system210V & 380V 60 Hz
Steering systemHydraulic steering system KOBELT
Stabiliser4 fins ABT TRAC Zero speed
WatermakerFCI 1800 QD capacity of 2 x 280 l/h
HVACAQUA AIR air conditioning system
Paint systemAwlgrip system
Exterior deckTeak deck 13mm thickness
Anchor system2 MUIR windlass - 2 Pool 300kg anchor + 2 x165m chain
Passerelle1 aft 5m Passerelle OPACMARE
Tenders21’ Guest Tender stored on upper deck
Tender Launching system1 Nautical structure 2,5 T crane on upper deck & atlas davits on main deck
ClassificationBV Hull and Mach Unrestricted and MCA LY2 compliant
InteriorClassic interior joinery style American Cherry wood furniture & bulkheads
Owner and guest capacity 12 persons
Crew capacity7/8 persons
Naval Architect Overing Yacht Design
Interior StylingKirschstein Yacht Designs

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