This is a rare opportunity to acquire a fully loaded X43, specified far beyond standard and maintained to an exceptional professional standard. Lightly used and upgraded throughout, she represents the ideal blend of performance, ease of handling, and premium Scandinavian build quality — quite simply, the perfect yacht for an owner who wants everything.Her key specification stands out immediately:

Axxon carbon mast and boom for reduced weight, increased stiffness, resulting in enhanced sailing performance

Extensive Doyle Stratis Sails inventory, offering versatility for cruising and competitive racing

Upgraded halyards with custom chafe protection, you can judge a yacht on her rope work - no expense spared.

B&G H5000 instruments and navigation, top end navigation and sailing data processing.

Electric main halyard winch + electric mainsheet winches, making sail handling effortless shorthanded.

Dark grey hull, giving the yacht a striking, modern aesthetic

Factory‑installed lithium batteries, providing superior power capacity and reduced weight
Currently ex‑tax, she is perfectly positioned for both GB and EU buyers, with the relevant VAT simply payable in the buyer’s jurisdiction. We can assist with this process.Professionally maintained and lightly used, this X43 is presented in superb condition and is ready for immediate enjoyment. Whether your plans lean toward fast cruising, competitive racing, or a mix of both, this yacht delivers.Ready to cruise. Ready to race. Ready for anything. Contact Stuart Abernethy at Fortis Marine to arrange a viewing. OtherOwner's Comments Onyx II is a yacht that has given me the opportunity to enjoy regattas and all the challenges and excitement that comes from competition.She is magnificent under sail; quick, responsive and light on the helm, a pure joy. In a big sea she eats away at the miles, exudes confidence and security and, in those moments, you really appreciate her build pedigree. However, when it is all over, I could then retire to the privacy and comfort of her Scandinavian luxury.During my ownership I have had Onyx II professionally maintained by a Marine Engineer and she has always been kept in the best possible condition.I have recently sailed her back to Hamble Point to be with her ‘family’ at X-Yachts who have always given me excellent support, once, even flying over to visit to offer sail trimming advice.Since her return, X-Yachts have meticulously prepared her for sale to ensure that she is in pristine condition and that the next owner will enjoy her as much as I have.HullExterior DetailsHull
The hull is a full sandwich construction, using foam core, biaxial E‐glass skins and local E‐glass unidirectional reinforcements strategically positioned for strength and weight optimization. It is built according to ISO 12215 (European Standard).
Hull Colour - 'Black Grey' & 3 x 'Pure White' integrated GELCOAT Water Lines
Flush through hull fittings are recessed into the hull for perfect flush finish. Reduced drag leads to more speed.
Bathing Platform Medium with Flexiteak and swim ladder.
Hull Treatment - 3 x layers of sprayed epoxy primer from new at the yard - anti fouled annually with black anti fouling.
Gunwale Protection - Stainless Steel rail protection mounted along sheer line
Latest generation of rudder design fitted.
Deck
Flexiteek on cockpit floor and seats and side deck - Vacuum applied, "scrubbed" tone, with black caulking
Cockpit Cushions Dark Grey - 6 cm thick cushions, canvas covered, securely mounted by an alloy track and bolt rope.
Sail Handling
Larger Genoa Winches - 2 x Harken Performa 50.2 STP Manual two-speed self-tailing winches
Electric Mainsheet Winches - 2 x Harken Performa 46.2 STEPH two-speed self-tailing winches
Electric Port Halyard Winch - 1 x Harken Performa 46.2 STEPH two-speed self-tailing winch
Genoa Car Control Lines - 4:1 to cockpit cam cleat •
Sail Handling Pack 1:
1. Asymmetric spinnaker equipment including; 2 x Dyneema / Spectra sheets, 2 x gennaker blocks, 2 x foot blocks, 2 x cleats for "parking" the sheets and 2 x Wichard shackles mounted incl. 1:1 asymmetric tack line and tack block
2. Outboard sheeting pad eyes
Spinnaker barber haul system
Masthead 1:1 spinnaker halyard
Code 0 Halyard - Dyneema SK99
Sails
Extensive Doyle Sails wardrobe;
Doyle Stratis Mainsail - condition very good.
Doyle Stratis Jib - condition very good.
Doyle Stratis Heavy airs Jib - condition very good.
Storm Jib - unused.
Trisail - unused.
A2 Asymetric - condition very good.
Code Zero - condition very good.
Mast & Rigging
Carbon Mast & Boom - Black painted, with clearcoat carbon below deck level.
Mast with Antal track for lower stack height.
Furling Furlex headstay with an under deck drum. Furling line led back to cockpit for easy handling
Discontinuous Rod Rigging with tip cups incl. Racing Rod turnbuckels for V1's and D1's
No NDT test for rod rigging available.
Mast Jack for Carbon rig - hydraulic pump, cylinder with gauge, hoses and manifold
Lazy Jacks - mounted on mast & boom including hooks, cleats on mast & rope
LED Deck & Steaming Light Combi
LED Tricolour & Anchor Light
KeelStandard Keel - 2.2m 'T' keel consists of antimony hardened lead T-bulb bolted and glued to cast iron fin for high strength, low centre of gravity for comfortable sailing performance. The Keel is totally encapsulated in three layers of CSM E-glass with epoxy for protection, perfect wing shape and maximum lift and height by sailing. The keel is securely bolted to the structural steel keel frame with stainless steel bolts for maximum safety and integrated central hoistHatches / Portlights / Ventilation / Sprayhood
Flush Deck Hatches - Flush Frameless hatches on foredeck, coach roof and companionway
Sprayhood in dark grey canvas with sturdy stainless steel framework.
Guard rail / Anchor / Stainless Steel Fittings
Boarding Gates in Guardrails
Electric Anchor Windlass - with 50 meters of 8 mm calibrated galvanised anchor chain
Anchor - 16 kg Delta galvanised anchor
Mooring Cleats x 6
Dark Grey Painted Carbon Fibre Bow Sprit
In addition to the standard 4 foldable Wichard pad eyes in cockpit, a pack of 4 (2 each side) additional Wichard
Cleat mounted in anchor locker x 1
Fairleads on bow, as far fwd as possible
New Medium mount: 2 x Console with stainless steel grab rail mounted on top of pedestal
2 x Carbonautica black composite wheels
AccommodationInterior
Danish design and architecture is famous for its clean and timeless style. The X4.3 interior is designed to work at open sea as well as moored.
The utmost care has been taken to design the interior of the X4.3. From the basic layout, to the smallest details, everything has been carefully chosen to ensure that the X4.3 is a perfect blue water cruising boat.
Nordic Oak veneer on all wooden surfaces.
Imitated Walnut floorboards - instead of standard imitated teak floorboards
White Corian - White Corian tops in galley
Spring Mattress in owners cabin, with matress topper.
Freeboard cabinets above the berth (port & starboard) in Owner's Cabin
Laminated Handrails - handrails in laminated oak
LED Interior Lighting - LED lighting throughout the yacht
2 x Freeboard hung sea berths (1 fitted in each aft cabin)
Olive Grey upholstery throughout.
Ocean Air Skyscreen Pleated Blinds - including flyscreen and blackout blinds for skylights in owners and aft cabin(s)
Blinds - Popper blinds for hull windows in aft cabin(s) and owner's cabin
Ocean Air Skyscreen Pleated Blinds - blackout blinds for main double saloon hatch
SystemsEngine
Yanmar 45 HP - common rail diesel engine
Gori 3-blade Single Pitch foldiing propellor
Engine Hours - 543hrs - correct June 2026
Original saildrive seal.
Fuel tank - aluminium 200 litres, centrally located under Starboard berth to keep weight centered around the keel for best sailing performance
Halon Automatic fire extinguisher within engine bay.
Plumbing
Upgraded Fridge / Freezer Cool box - Isotherm Magnum refrigeration unit with fridge/freezer
Microwave - Stainless Steel front
Gas Detector Alarm
Electric Toilet - 12V electric, Jabsco quiet flush SEAWATER toilet (regular size) - AFT Heads
Electric Toilet - 12V electric, Jabsco quiet flush FRESH WATER toilet (regular size) - FWD Heads
Teak Floor in Heads
Pressurised hot & cold water system with fresh water tank, 340 litres located below port main cabin sofa
Manual Fresh Water Pump for freshwater in galley.
Seagull drinking water filter in galley.
Deck Shower located in aft cockpit
Holding Tank - 55 litre, Polyethylene holding tank per toilet . Emptying by sea cock or deck suction
Electrical Bilge Pump, operated at chart table.
Manual Bilge Pump , operated in cockpit.
Manual Bilge Pump, mounted inside aft cabin with long roaming hose
Seawater Deck rinse - with electric pump with outlet in anchor locker
Heating system - Eberspächer D5 with 5 outlets in saloon, owner's cabin, fwd head and both aft cabins
Electrical
12V DC system throughout the yacht.
12V DC system for main engine installation.
12v socket (cigar type) mounted under owners berth
Shore Power Installation
3 x 90Ah Lithium Super B Epsilon batteries incl monitor and battery safety device
Combi Battery Charger & Inverter - 12V/2000W/70A including remote multi control panel and galvanic isolator
LED Cockpit Light - White, mounted over floor in cockpit
Red LED Courtesy Lighting - 4 x LEDs in main cabin mounted at floor level
Electronics
B&G H5000 system, to include;
3 x H5000 Graphic displays in companionway garage on deck
1 x H5000 Hydra main processor
1 x Triducer IDST Speed, depth and temperature transducer
1 x Wind, WS710, 810 mm vertical carbon MHU transducer
1 x H5000 Autopilot controller pack incl. H5000 pilot key pad - 12 V with Precision 9 rate compass and RAM T2
2 x 9" Zeus3S plotter with integrated Wifi mounted in cockpit
1 x Radar, Halo+ 20
1 x B&G V100 VHF AIS RX with handset and loudspeaker at chart table, with second station in cockpit.
1 x Ritschie Compass HF743,
1 x Shakespear VHF antenna for VHF & FM, cable Aircell7, Pom mast isolation mounted in mast head.
1 x Fusion Apollo MS-RA770 with set of Fusion 4" loudspeakers mounted in saloon and Fusion loudspeakers fitted in cockpit
ThrustersMax Power Compact retractable 12V bow thruster with controls at engine recessAdditional InformationFortis Marine 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 surveyor to investigate such details. This vessel is offered subject to prior sale, price change, or withdrawal without notice.