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On a CTV or an SOV, maintenance does not only protect the vessel: it protects the day rate. Duty cycle, structural fatigue, motion-compensated gangways, weather windows, the traceability charterers demand and the contractual KPIs — a practical guide to protecting the availability of your offshore wind support fleet.

Cosmetic and technical standards, short intervention windows, fast crew turnover, REG Yacht Code and ISM: yachting stacks the constraints. This guide explains how to structure superyacht maintenance with a CMMS — equipment hierarchy, job procedures, spares, certificates, budget — and includes a typical season maintenance plan by system.

Since 2023 the CII rates your ship's carbon performance every year and the EU ETS prices every tonne of CO2. Hull, propeller, injectors, turbocharger, coolers, steam and compressed air: here is how technical condition drives fuel burn, and how to build an energy-aware maintenance plan.

Paris MoU detention rates keep climbing — 4.18% in 2025. Fire safety, life-saving appliances, ISM, MLC, MARPOL: here are the deficiency families that dominate PSC inspections, their maintenance root causes, a domain-by-domain pre-arrival checklist, and how a maritime CMMS produces the dated evidence a PSCO expects.

Machinery survey credit, planning owned by the ship, approved condition based maintenance: an approved PMS reshapes how a fleet is maintained. Class survey cycle, approval file at DNV, BV, LR, RINA and ABS, what the annual audit really covers and why credit gets suspended.

STCW certificates, flag State endorsements, medical fitness, MLC 2006 agreements: one expired document is enough to detain a ship. A full map of what to track, the manning matrix, PSC and ISM consequences, and the D-90 / D-60 / D-30 alert process that makes forgetting impossible.