Maritime Builders Risk Insurance

What is Maritime Builders Risk?

Maritime Builders Risk insurance is a specialized form of property coverage designed to protect vessels under construction or major renovation. It typically applies to shipyards, boat builders, marine contractors, and other businesses involved in constructing or repairing commercial vessels and yachts. This policy addresses exposures that arise during the build process, including property damage, fire, theft, and certain transportation risks.

Who Needs It

This coverage is essential for shipbuilders, marine engineering firms, and contractors working on new builds or significant retrofits of watercraft. It is also sought by yacht manufacturers and commercial vessel operators who commission new vessels. Any party with a financial stake in the construction project may benefit from this policy to protect their investment.

What it Typically Covers

A standard maritime builders risk policy often includes protection for:

  • Physical damage to the hull and machinery during construction
  • Property on the job site, including materials and equipment
  • Damage from perils such as fire, explosion, or accidental collision
  • Risks during sea trials or limited navigation (if endorsed)

For example, if a partially completed vessel is damaged by a crane accident at the shipyard, a properly structured builder’s risk policy may respond to cover the loss.

Common Exclusions or Limitations

While coverage is broad, there are exclusions to be aware of. These may include:

  • Wear and tear or gradual deterioration
  • Losses due to poor workmanship or design flaws
  • Third-party liability (covered under separate marine liability policies)
  • Acts of war or government confiscation

Marine contractors should also consider additional policies like Marine Hull Builders Risk Insurance to ensure broader protection for vessel-specific exposures.

Factors that Influence Cost

Premiums for maritime builders risk insurance depend on various underwriting factors, including:

  • The total project value and duration
  • Type and size of the vessel
  • Location of the construction site or shipyard
  • Loss history and risk management procedures in place

Coverage for high-value yachts or commercial tankers may cost more due to increased exposure and complexity.

Proof of Insurance & Compliance

Many project stakeholders, including financiers and port authorities, require proof of builders risk insurance before work begins. This certificate demonstrates that coverage is active and meets contractual obligations. Proper documentation can also help avoid project delays and regulatory issues.

How to Get a Quote

Because maritime construction projects vary widely, it’s important to discuss with an agent who understands marine exposures and can tailor a policy to your needs. Working with a specialist ensures that complex risk factors—like facility risks and equipment coverage—are properly addressed.

For projects involving commercial vessels, you may also benefit from reviewing Commercial Vessels Builders Risk Insurance options. Yacht manufacturers can explore more targeted protection with Builders Risk Insurance for Marine Projects.

Frequently Asked Questions

What types of vessels are eligible for builders risk coverage?

This coverage typically applies to yachts, barges, ferries, cargo ships, and other commercial or recreational vessels under construction or renovation.

Can builders risk include coverage during sea trials?

Yes, some policies offer endorsements for limited navigation and sea trials, but this must be arranged in advance with your insurer.

Is liability coverage included in a maritime builders risk policy?

No, this policy covers property-related risks during construction. Liability coverage for bodily injury or third-party claims must be purchased separately.

Does the policy cover subcontractors’ equipment?

Usually, the primary contractor’s policy doesn’t extend to subcontractors’ tools or equipment unless specifically endorsed or agreed upon in the contract.

How long does coverage last?

Coverage generally lasts for the duration of the construction project, ending upon completion, delivery, sea trials, or as defined in the policy terms.

Still have questions? Talk to a local insurance expert.

Partners, Programs & Market Access


We maintain relationships with nationally recognized and specialty-focused insurance providers that actively underwrite this class of business. Our network includes both admitted and non-admitted markets, allowing us to match risks—from straightforward accounts to more complex or hard-to-place exposures—with appropriate underwriting partners.


Program availability, coverage terms, and underwriting appetite can vary based on operations, location, and loss history, so access to multiple markets is key to securing the right fit. This approach helps ensure broader coverage options and more competitive placement across a range of risk profiles.



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