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The Island SPIRIT 525 catamaran features a shaft-drive propulsion system rather than traditional sail drives, utilising 85-horsepower Yanmar engines paired with generators to power the vessel.▶ 9:37 This configuration allows the motors to be housed under aft berths, simplifying maintenance and reducing the risk of water ingress associated with sail drive seals.▶ 9:13 The electrical system centres on a 210-kilowatt-hour lithium-ion battery bank, distributed across six packs to balance the 18-tonne vessel.▶ 10:34 Climate control is managed by a dual-chiller system that circulates chilled water to individual air handlers, significantly reducing power consumption compared to multiple independent air conditioning units.▶ 12:39 The boat includes three-zone MPPT solar controllers and a centralised SeaZone digital switching system accessible via chart plotters.▶ 15:17 Owners of hull number three report that the catamaran’s beam provides stability in rough seas, while the layout includes a forward cockpit, flybridge, and six equal-sized berths suitable for charter operations.▶ 4:38

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