Hull Insurance
Physical damage coverage for the body (hull) of a vessel or aircraft, protecting against collision, grounding, fire, and other perils.
What It Is
Hull Insurance is a first-party property coverage that protects the owner of a vessel or aircraft against physical damage to the craft itself. For marine risks, this includes damage from collision, grounding, heavy weather, fire, and machinery breakdown. For aviation, it covers ground damage, in-flight damage, and total loss.
Marine hull policies are typically written on an agreed-value basis, meaning the insurer and insured agree on the vessel's value at inception. In the event of a total loss, the agreed value is paid without depreciation. Partial losses are paid on a repair-cost basis subject to the agreed value cap.
Hull insurance is distinct from cargo insurance (which covers goods in transit) and Protection & Indemnity (which covers third-party liability). Most commercial vessel owners need all three coverages.
Why It Matters for Brokers
For brokers placing marine or aviation risks, hull insurance is the anchor coverage around which all other policies are structured. The agreed value sets the baseline for total-loss calculations, and hull deductibles directly affect the insured's retention strategy. Getting the valuation wrong — either too low (underinsured) or too high (overpaying premium) — is a common E&O exposure.
Real-World Example
A regional fishing fleet owner insures five commercial trawlers under a hull policy with agreed values ranging from $800K to $1.4M per vessel. During a storm, one vessel runs aground and sustains $340K in hull damage. The hull insurer pays the repair cost less a $25K deductible. Because the policy was written on an agreed-value basis, there is no coinsurance penalty despite the repair cost being well below the vessel's insured value.
Common Mistakes
- 1Failing to update agreed values annually, leaving the vessel underinsured as replacement costs rise with inflation and supply-chain constraints.
- 2Not clarifying whether the hull policy includes machinery damage or if a separate Machinery Damage endorsement is required for engine and propulsion systems.
- 3Confusing hull insurance with Protection & Indemnity coverage, which covers third-party liability rather than physical damage to the insured vessel.
How brokerageaudit.com Handles This
Policy Checker extracts agreed values, deductible structures, and navigating warranties from uploaded hull policies. Renewal Comparison highlights year-over-year changes in agreed values, premium rates, and warranty conditions so brokers can quickly identify coverage shifts.