14.3 Inland Marine and Nationwide Marine Definition
Key Takeaways
- Inland marine covers mobile property, property in transit, and instrumentalities of transportation/communication; the classifying test is mobility or transit, not the peril.
- The Nationwide Marine Definition (revised 1976) lists the classes that may be written as inland or ocean marine and bars fixed-location property from the line.
- Inland marine is usually open-peril, often valued/agreed-amount, with little or no coinsurance and broad territory.
- Core forms include contractors equipment floaters, builders risk (ends at occupancy/expiration/90 days post-completion), EDP, bailee, and transit/motor truck cargo.
- Valued floaters pay the agreed amount without depreciation or coinsurance, unlike standard commercial property settlements.
What Inland Marine Actually Insures
Inland marine insurance covers property that moves, is in transit, or is an instrumentality of transportation or communication (bridges, tunnels, piers, pipelines, towers). Despite the word "marine," most inland marine risks never touch water. The line grew out of ocean marine cargo coverage: early cargo policies ended when goods left the vessel, so an "inland" extension followed shipments overland to their destination.
Quick Answer: If property is mobile, in transit, or hard to fix to one address, it is usually an inland marine risk - not a commercial property risk.
The defining exam test is mobility or transit, not the type of peril. A $400,000 crane on a job site is inland marine (a contractors equipment floater); the same value in a boiler bolted to a building is commercial property.
The Nationwide Marine Definition (NMD)
The Nationwide Marine Definition, last substantially revised in 1976, lists the classes a company may write as inland (or ocean) marine. Underwriters must keep risks inside these classes; writing fixed-location property as "inland marine" to dodge coinsurance is a regulatory violation.
| NMD Class | Typical Examples |
|---|---|
| Imports / Exports | Goods entering or leaving the country |
| Domestic shipments | Goods in transit between U.S. points |
| Instrumentalities of transportation/communication | Bridges, tunnels, piers, pipelines, towers |
| Personal property floaters | Jewelry, fur, fine arts, camera floaters |
| Commercial property floaters | Contractors equipment, mobile medical gear |
| Bailee coverage | Property of others in the insured's care |
Why Inland Marine Looks Different
Inland marine evolved with few regulatory constraints, so forms are flexible and often manuscript (custom-written).
| Feature | Inland Marine | Standard Commercial Property |
|---|---|---|
| Coverage basis | Usually open-peril (all-risk) | Often basic/broad named perils |
| Valuation | Frequently valued / agreed amount | ACV or replacement cost |
| Coinsurance | Typically none | Commonly 80% or 90% |
| Territory | Broad, sometimes worldwide | Described premises only |
| Forms | Filed or non-filed (manuscript) | Standardized ISO forms |
Filed vs. non-filed: personal articles floaters are typically filed with the state; large commercial classes are often non-filed, letting the underwriter craft terms and rates per risk.
Major Inland Marine Forms You Must Know
Contractors Equipment Floater
Covers mobile equipment - bulldozers, cranes, compressors, hand tools - at job sites and in transit. Open-peril, but excludes wear, mechanical breakdown, and road-licensed equipment (which belongs on commercial auto).
Builders Risk
Covers structures under construction, with the amount tracking rising project value (completed-value or reporting approach). Coverage ends at the earliest of occupancy, policy expiration, or 90 days after completion.
Electronic Data Processing (EDP) Coverage
Insures hardware, media, and data/software restoration plus extra expense. Pure cyber-breach liability is a separate cyber policy, not an EDP property form.
Bailee Forms
Cover customers' property in the insured's care, custody, or control - a furrier's storage floater or processor's bailee form. The bailee is not the owner but is legally responsible.
Transit / Motor Truck Cargo
A motor truck cargo policy covers a carrier's liability for others' freight; a shipper's policy covers the owner's own goods.
Worked Valued-Form Example
A jeweler insures a diamond on a personal articles floater for an agreed (valued) amount of $20,000. The stone is lost in a covered theft. Because the floater is a valued form with no coinsurance, the insurer pays the agreed $20,000 without a depreciation or coinsurance test - contrast a commercial property form that would apply ACV depreciation and possibly a coinsurance penalty.
If instead the jeweler had carried $16,000 on a property form requiring 80% coinsurance on a $25,000 item, the coinsurance penalty would reduce recovery: $16,000 / ($25,000 x 0.80) = 80% paid, demonstrating why valued inland marine floaters are favored for high-value movable property.
The Nationwide Marine Definition and Filed vs. Non-Filed Classes
Inland marine insurance evolved from ocean marine to cover property in transit and instrumentalities of transportation/communication, plus certain movable or specialized property. Its scope is set by the Nationwide Marine Definition, which lists the classes of property eligible for inland-marine treatment: imports/exports, domestic shipments, instrumentalities of transportation/communication (bridges, tunnels, pipelines, communication towers), personal property floaters, and commercial property floaters.
Inland marine divides into filed classes (standardized ISO forms with filed rates — e.g., accounts receivable, valuable papers, signs, equipment dealers, contractors equipment) and non-filed (controlled) classes, where the insurer has freedom to design coverage and set rates — which is why inland marine is prized for flexible, broad, often open-peril coverage on hard-to-place property.
Common Inland Marine Coverages
The exam expects familiarity with the workhorse inland-marine forms:
- Personal Articles / Scheduled Property Floaters — open-peril, agreed-value coverage on jewelry, furs, fine art, cameras, musical instruments, and collectibles, with worldwide coverage and no coinsurance.
- Contractors Equipment Floater — mobile tools and equipment (backhoes, compressors) wherever they go.
- Motor Truck Cargo — a carrier's liability for, or an owner's interest in, goods being transported.
- Transit / Transportation forms — goods in the course of shipment (often using bailee's or shippers coverage).
- Bailee forms (e.g., Bailees Customers) — covering customers' property in the insured's care (dry cleaners, repair shops).
- Accounts Receivable and Valuable Papers and Records — the cost to reconstruct records destroyed by a covered peril.
- Builders Risk — property under construction (sometimes written as inland marine).
- Equipment/Electronic Data Processing (EDP) floaters — computers and media, often including breakdown.
The recurring exam ideas are that inland marine typically provides broad, often open-peril, frequently worldwide coverage with no coinsurance on scheduled items, and that the Nationwide Marine Definition is what determines whether a class is eligible for inland-marine (as opposed to standard property) treatment.
Which factor most clearly classifies a risk as inland marine rather than commercial property?
A builders risk policy on a new structure generally provides coverage until the earliest of which events?