14.3 Inland Marine and Nationwide Marine Definition
Key Takeaways
- Inland marine covers mobile property, property in transit, and instrumentalities of transportation and communication; the trigger is mobility or transit, not whether the peril involves water
- The Nationwide Marine Definition (last substantially revised in 1976) lists the six permissible inland and ocean marine classes and prevents writing fixed-location property as inland marine to avoid coinsurance
- Inland marine is typically open-peril, valued or agreed-amount, with little or no coinsurance and broad territory — unlike named-peril commercial property with 80% or 90% coinsurance
- Major commercial forms include contractors equipment floaters, builders risk, installation floaters, motor truck cargo, bailee forms, EDP, and valuable papers
- A bailee form covers customers' property in the insured's care; a carrier's cargo legal liability differs from a shipper's transit floater
What Inland Marine Actually Insures
Inland marine insurance covers property that moves, property in transit, and the instrumentalities of transportation and communication — bridges, tunnels, piers, pipelines, radio towers, and similar structures. 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 was built to follow shipments overland to their final destination. Over time, the line expanded to any property whose value or exposure is tied to mobility rather than a fixed address.
Quick answer: If property is mobile, in transit, or held for others in a business context, it is usually an inland marine risk — not a standard commercial property risk.
The defining exam test is mobility or transit, not the type of peril. A $500,000 crane on a construction job site is inland marine (contractors equipment floater). The same value in a boiler bolted to a building is commercial property.
The Nationwide Marine Definition (NMD)
Developed through the NAIC and last substantially revised in 1976, the Nationwide Marine Definition lists the classes a company may write as inland or ocean marine. Underwriters must keep risks inside these classes; writing fixed-location, non-transit 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, furs, fine arts, cameras, musical instruments |
| Commercial property floaters | Contractors equipment, mobile medical gear, sales samples |
| Bailee coverage | Property of others in your care (cleaners, repair shops, warehouses) |
The NMD is the single most-cited document on inland/ocean marine exam questions. Know that it defines permissible classes and was last revised in 1976.
Why Inland Marine Looks Different from Commercial Property
Inland marine evolved with very few rate-and-form constraints, so policies are flexible and often manuscript (custom-written). The result contrasts sharply with standardized commercial property forms.
| 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: Some inland marine forms (for example, the Personal Articles Floater) are filed with the state insurance department. Large commercial classes are often non-filed, letting the underwriter craft terms and rates per risk.
Common Inland Marine Forms
The exam expects recognition of these major commercial inland marine forms:
- Contractors Equipment Floater — mobile tools and machinery (cranes, backhoes, generators) at job sites and in transit; open-peril, no coinsurance.
- Builders Risk — structures under construction; written on a completed-value or reporting basis; covers materials, fixtures, and equipment to be installed.
- Installation Floater — materials and equipment from the moment they leave the supplier until installed and accepted.
- Motor Truck Cargo / Transportation Floater — goods being shipped; may cover the carrier's legal liability for cargo or the owner's goods directly.
- Bailee Forms — dry cleaners, repair shops, and warehouses covering customers' property in the insured's care, custody, or control.
- EDP (Electronic Data Processing) — computer hardware, media, and extra expense.
- Accounts Receivable and Valuable Papers & Records — hard-to-replace business records.
Worked Example — Builders Risk Completed Value
A developer builds a structure with a completed value of $2,000,000. A fire occurs when the project is 50% complete, causing $300,000 in damage. On a completed-value builders risk form the limit is set at the full $2,000,000 from day one (no monthly reporting), so the $300,000 loss is paid in full, subject only to the deductible — there is no coinsurance penalty for partial completion.
Bailee Coverage and Transit Concepts
A bailee is someone holding another person's property for a business purpose — a repair shop, warehouse, cleaner, or parking garage. Bailee forms cover the customers' property in the bailee's care, custody, or control. This fills a gap because the bailee does not own the property, and the CGL policy excludes care, custody, or control damage to others' property.
Trap: Do not confuse a carrier's cargo legal liability (covers the carrier's legal responsibility for goods it is hauling — a liability-based response) with a shipper's transit floater (covers the owner's goods directly on an open-peril basis regardless of fault). The first pays only if the carrier is legally liable; the second pays the owner subject to policy terms.
Most transit and floater forms are open-peril with broad territory and little or no coinsurance, reinforcing why inland marine is favored for mobile, high-value, or hard-to-replace property.
Personal Lines Inland Marine
On personal lines exams, inland marine appears as:
- Personal Articles Floater (PAF) — schedules individual items (jewelry, furs, fine art, cameras) at agreed value with no deductible.
- Personal Property Floater — broader scheduling of multiple classes of personal property.
- Boatowners Policy — technically marine but often studied alongside inland marine mobility concepts.
Agreed value means the insurer and insured fix the value at policy inception, eliminating post-loss valuation disputes for total losses.
Exam Scenarios
Scenario A: A landscaping company's wood chipper overturns while being towed between job sites. The unit is scheduled on an open-peril contractors equipment floater and is not licensed for road use. Covered — upset is not excluded, and non-road equipment belongs on the floater, not the business auto policy.
Scenario B: A jeweler wants to insure a $25,000 ring worn daily. Personal Articles Floater at agreed value — not the Homeowners sublimit for jewelry.
Scenario C: A warehouse stores customers' goods and a fire destroys them. Bailee form — the warehouse does not own the goods.
Scenario D: An insurer tries to write a fixed office building as inland marine to avoid coinsurance. Improper — violates the Nationwide Marine Definition.
National exam focus: Know the NMD classes and 1976 revision date, the mobility test separating inland marine from commercial property, major floater forms, and the bailee vs. carrier cargo distinction.
Which document defines the classes of property that insurers may write as inland marine?
A landscaping company's wood chipper overturns while being towed between two private job sites. The unit is not licensed for road use and is scheduled on an open-peril contractors equipment floater. How does coverage respond?
A dry cleaner's customer alleges that a fur coat was damaged while in the cleaner's possession. The cleaner carries a bailee form. Why is this coverage needed instead of the commercial property form?