This aluminium ketch‑rigged explorer catamaran is defined by a structural and hydrodynamic architecture optimised for long‑range expedition use, hybrid propulsion integration, and continuous live‑aboard operation. The twin‑hull platform provides inherent transverse stability, reduced pitching moments, and efficient displacement–speed performance in variable offshore conditions. Aluminium construction enables controlled weight distribution, high impact resistance, and simplified structural inspection, important for high‑latitude or remote‑region deployment. The ketch rig is selected for load distribution, dividing sail area across two masts to reduce compression loads, lower the centre of effort, and improve balance when reefed in heavy weather.
Parallel hybrid propulsion couples electric drive/electric generation units with standard diesel drive and high‑capacity battery banks. This configuration supports low‑noise manoeuvring, silent ‘motor’ sailing, extended operation at anchor without generator cycling. A 4kW solar array inputs further enhance energy autonomy, reducing reliance on fuel logistics during extended expeditions. The yacht has a range under engine in excess of 2000 nm. CFD‑derived hull optimisation informs keel, rudder, and appendage geometry, targeting low drag coefficients and predictable flow separation at all operating speeds. CFD was also used to validate the flow around the rudder protection system which was a specific requirement of the client.
Interior and systems design prioritise long‑duration live‑aboard functionality. Thermal insulation, mechanical ventilation, and zoned heating support cold‑region operation, while modular accommodation layouts maintain service access to structural and mechanical systems. The saloon, galley, and helm arrangements are configured for continuous watchkeeping and efficient movement between operational zones. Storage, tankage, and machinery spaces are distributed to preserve trim and maintain serviceability during extended expeditions. The yacht integrates multihull interior space, ketch‑rig control, and hybrid propulsion into a technical platform engineered for autonomous expedition capability as well as blue water recreational cruising and transoceanic passage making.
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LOA:
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22.3 m
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Beam:
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10.02 m
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Displacement:
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39,920 kg (lightship)
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Sail Area:
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263 sqm (upwind)
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Sail area/displacement ratio:
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23.5
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Length/displacement ratio:
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100
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To discuss your own particular cruising requirements contact:
OC CRUISING
For background on Owen Clarke's involvement as multihull sailors and designers go to:
MULTIHULLS
For an explanation of the technology behind the design process go to:
NAVAL ARCHITECTURE
For an insight into our engineering and detailed design work go to:
ENGINEERING
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