Coating Age, Spot Repair, Full Recoat Timing, Surface Preparation, Access/Staging, Drydock-Day Exposure & Lifecycle NPV

Marine Coating Lifecycle, Recoating & Drydock Cost Tool

Turn coating condition and repair timing into a lifecycle cost plan. Simple mode screens spot repair now versus future full recoating and shows how much added drydock time changes the economics. Advanced mode models tanks, hull zones and other coated areas independently, then schedules recurring full recoats, annual inspection/maintenance and shared drydock campaign costs over the selected horizon.

Data type
Currency
Currency selection changes display only. No exchange-rate conversion is performed.
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Need multiple tanks/zones and discounted lifecycle cost? Click Advanced above.Advanced separates current spot repair, planned full recoat year, post-recoat interval, annual inspection/maintenance, access complexity and shared future drydock campaigns so the entire ship is not forced into one coating schedule.

Fast Coating Lifecycle & Recoat Screen

The 15-year default is useful for PSPC-style ballast-tank screening, but it is user-editable. Actual coating life varies with coating system, surface preparation, application quality, service environment and maintenance.

m².
years.
years.
% of coated area.
Selected currency / repaired m².
Selected currency / total coated m².
Selected currency / worked m².
Critical-path days.
years.

Lifecycle & Campaign Basis

years.
%.
Selected currency / worked m² before complexity factor.
% applied to coating/access campaign costs before dock-day burden.

Coating Zone Register

Condition is a planning label only. Planned full recoat year is explicit so the calculator does not infer a class renewal requirement from age or condition.

Zone / tank groupArea m²Current age yTarget life yConditionSpot repair now %Spot repair cost / m²Full recoat cost / m²Access complexityPlanned full recoat in yPost-recoat interval yAnnual inspect/maint / m²

Coating Maintenance Readiness

Coating-planning screen only: this tool does not determine regulatory coating condition, prescribe a coating system, set surface-preparation acceptance, replace the Coating Technical File, or decide when class requires coating repair. The entered useful life and intervention dates are planning assumptions.
2026 coating context: IMO's PSPC for dedicated seawater ballast tanks and double-side skin spaces of bulk carriers, resolution MSC.215(82), is based on specifications intended to provide a target useful coating life of 15 years while remaining in GOOD condition; the resolution also states that actual useful life varies with service conditions. MSC 108 adopted amendments to MSC.215(82) and approved guidelines for maintenance and repair of protective coatings, with the mandatory amendments expected to enter into force on 1 January 2026. IMO Protective Coatings · IMO MSC.215(82) · IMO MSC 108
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