About
Owner’s Version | Carbon Mast and Boom | 2022 Yanmar Engines | Lithium and Victron Power | Replacement Standing Rigging
MOTIVATED SELLER
Introduction
BLUE MOON is the highly sought-after Owner’s Version of the Catana 581, a yacht widely respected for combining genuine offshore performance with exceptional comfort for long-distance cruising and liveaboard life.
Built using Catana’s lightweight foam-sandwich composite construction with carbon reinforcement in high-load areas, carbon spars and lifting daggerboards, she delivers the sailing performance for which the Catana name is renowned while providing spacious, practical accommodation for extended cruising.
Extensively upgraded under her current ownership, BLUE MOON benefits from twin 2022 Yanmar 110HP engines, a 2022 Onan generator, replacement standing rigging, recent Crusader sails, Gori folding propellers, an extensive Victron lithium electrical system, approximately 2.25kW of solar generation, Starlink High Performance satellite communications, a Seawater Pro watermaker and numerous mechanical, electrical and structural improvements completed during 2025 and 2026.
Following these upgrades, she completed an Atlantic crossing from Greece to Trinidad in early 2026 before continuing safely through the Caribbean to Cartagena, demonstrating the offshore capability for which the Catana 581 has earned its reputation as a highly regarded bluewater performance cruising catamaran.
For buyers seeking a proven offshore cruising yacht, BLUE MOON represents an opportunity to acquire a particularly well-equipped Catana which has benefited from substantial recent investment in her machinery, rigging, electrical systems and structure.
Broker’s Comments
BLUE MOON was acquired by her current owner in August 2025 following a pre-purchase survey and has since benefited from substantial mechanical, electrical, rigging and structural investment.
Replacement standing rigging was completed in Greece during October 2025. Professional composite repairs to the port coachroof-to-bulkhead connection and an adjoining section of the forward deck were completed in May 2026 using epoxy, carbon fibre, Nida core and biaxial fibreglass construction in accordance with the contractor’s documented lay-up schedule. This was followed by an independent rig inspection in June 2026.
The exterior teak has also recently been resanded and stained, substantially improving its presentation.
BLUE MOON is currently benefiting from a further programme of routine maintenance and refurbishment, including mechanical servicing, electrical work, air-conditioning maintenance, local cosmetic fibreglass and gelcoat repairs, joinery and stainless-steel work, together with removal and rebedding of a saloon window to address a minor leak. The seller expects this programme to be substantially completed before returning to the yacht in October 2026.
Importantly, a comprehensive documentation package accompanies BLUE MOON. This includes the July 2025 pre-purchase survey, a detailed current reconciliation of the survey observations and subsequent works, together with contractor invoices, structural documentation, rigging certification and other supporting technical records.
This survey, reconciliation and supporting technical documentation are available to genuinely interested purchasers upon request.
Highlights
Specifications
SPECS
MEASUREMENTS
ENGINE(S)
TANKS
Accommodations
Additional Information
Construction and Dimensions
AccommodationStarboard Hull
Owner’s Suite
Port Hull – Guest Accommodation
Bridgedeck Saloon
The starboard saloon window has had a minor leak and is due to be removed, rebedded and reinstalled as part of the seller’s ongoing maintenance programme.
Galley and Domestic Equipment
The air-conditioning system has previously benefited from refurbishment, including repair of three fan units and replacement of one. Further investigation and maintenance of the air-conditioning forms part of the seller’s current maintenance programme.
Machinery
Routine engine servicing, including oil and filters, together with reinstallation of an alternator attachment, forms part of the seller’s current maintenance programme.
Generator, Electrical and Solar
The electrical system has been substantially upgraded to provide extensive long-range off-grid capability. A comprehensive Victron installation, large-capacity lithium battery bank and extensive solar generation provide substantial independence from shore power while supporting domestic systems, selected air-conditioning loads and other onboard equipment.
Further local wiring tidying and relocation forms part of the current maintenance programme.
Tankage and Water Systems
A further replacement water pump forms part of the seller’s current maintenance programme.
Rig and Deck Equipment
The Catana 581’s carbon spar package and lifting daggerboards are central to her sailing performance. BLUE MOON further benefits from replacement standing rigging completed in 2025, together with continued investment in the deck gear and steering systems.
Replacement standing rigging was professionally completed during October 2025 and certified by the attending rigger. An independent inspection carried out on 9 June 2026 reported the principal rig components in good condition, noting localised chafe to the mainsail halyard near its dead-end fitting.
Sails
Navigation and Communications
Ground Tackle and Deck Inventory
Tender and Diving Equipment
The tender’s GRP hull requires refurbishment or replacement. The four dive cylinders require hydrostatic testing and re-certification before use.
Safety Equipment
Composite Work
Professional composite repairs were completed in May 2026 to the port coachroof-to-bulkhead connection and an adjoining section of the forward deck.
The affected structure was rebuilt using epoxy resin, unidirectional carbon fibre, Nida core, biaxial fibreglass and a gelcoat finish following the contractor’s documented lay-up schedule.
The work included removal of the affected material, replacement of approximately 0.75m² of deck core and reinforcement of the repaired structure using modern composite construction techniques.
The contractor’s detailed lay-up schedule, invoice and supporting documentation are available for inspection.
Separate from the above documented repair, the seller reports that local cosmetic fibreglass, finishing and gelcoat work is currently being undertaken to address a number of smaller cracks, dings and similar exterior items. The seller has specifically advised that these are local repairs rather than a newly discovered major structural issue.
Ownership and Exclusions
BLUE MOON was owned from new in Peru before a long period of American ownership. Her current owner acquired the yacht in August 2025.
Personal effects, clothing and surfboards are excluded from the sale.
Disclaimer
Nicolle Associates 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.
The Multihull Company is pleased to assist you in the purchase of this vessel though the vessel may be listed with another brokerage company.
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