Marine and Boat Insurance Calculator
Our marine and boat insurance calculator estimates the annual premium for insuring a private leisure vessel — from dinghies and motorboats to canal narrowboats and ocean-going yachts. Marine insurance is specialist and significantly different from standard insurance, with cover requirements varying enormously by vessel type, navigation area, and usage.
Marine & Boat Insurance Calculator
Estimate the annual cost of marine and boat insurance. Covers hull, engine, equipment, liability and personal accident.
Premium estimates are indicative. Marine insurance premiums vary significantly by vessel, usage, experience and insurer.
What Marine Insurance Covers
A comprehensive marine policy includes: hull and machinery cover (physical damage from collision, grounding, storm, fire, and theft); third-party liability (injury to other water users or damage to other vessels and harbour property — typically £1–3 million minimum); personal accident cover for crew and passengers; and optional extras including salvage, wreck removal, and transit cover for trailerable vessels. Navigation area is a key underwriting factor — inland waterways policies are cheaper than coastal, which are cheaper than European, which are cheaper than worldwide cover. For a baseline comparison of standard property insurance costs, see our Home Insurance Calculator, and our Landlord Insurance Calculator if the vessel is also used commercially.
Frequently Asked Questions
No statutory requirement exists for boat insurance in UK inland or coastal waters. However, most marinas require third-party liability cover as a condition of mooring. Canal and River Trust requires third-party liability cover of at least £1 million to license a craft on the waterways.
Standard home contents policies typically cover small rowing boats and inflatables at low value. Any powered vessel or sailing boat requires a specialist marine policy. Home insurance will not cover third-party liability on water.
Many marine insurers offer a discount for periods when the vessel is laid up ashore — typically winter months. A 3–5 month lay-up typically saves 20–30% on the annual premium.
Hull and machinery cover typically includes the engine against accidental damage (collision, flooding, fire). Mechanical breakdown without an external accidental cause is not covered by standard marine policies.
Agreed value is preferable for boats that hold or appreciate in value (classic wooden boats, well-maintained sailing yachts) as it removes the uncertainty of market valuation at claim time. Market value cover suits vessels whose value declines predictably with age.
Enter your vessel’s market value and select whether it is used for leisure or charter. Marine insurance for leisure craft covers the hull and machinery (physical damage to the boat and engine), third-party liability, and personal effects. The geographic scope of cover — inland waterways only, coastal, or offshore — significantly affects the premium. Laid-up periods when the boat is out of the water can attract a reduced premium if the insurer is notified. Charter and commercial use requires a different policy to leisure use; using a leisure-rated vessel commercially can invalidate cover. Survey requirements for older vessels and safety equipment requirements (EPIRB, life jackets, flares) vary by policy — check conditions before assuming cover is active.
Important Information
This calculator is provided for general information and planning purposes only. It does not constitute financial or tax advice and should not be relied upon as such. Figures are indicative estimates based on simplified, publicly available criteria and stated assumptions. Actual results depend on your full circumstances. See our Disclaimer for further information.