14.3 Inland Marine and Nationwide Marine Definition
Key Takeaways
- Inland marine evolved from ocean marine to cover property that moves, is in transit, or is held by a bailee, plus fixed instrumentalities of transportation/communication like bridges and piers.
- The Nationwide Marine Definition (1933, rev. 1953/1976) authoritatively lists the six classes of property eligible for marine treatment and prevents marine forms from poaching standard property business.
- Inland marine divides into filed/controlled classes (accounts receivable, valuable papers, equipment floaters) and non-filed classes (builders risk, jewelers block, motor truck cargo).
- Most inland marine is written open-perils on a scheduled/blanket basis, often at agreed or stated value, and follows the property worldwide or throughout the coverage territory.
- Bailee forms cover customers' property in the insured's care; agreed-value floaters pay the scheduled amount rather than depreciated ACV.
Origins and the Nationwide Marine Definition
Inland marine insurance grew out of ocean marine coverage as goods began moving over land - first along rivers and rails, then highways. Because marine policies were lightly regulated and broadly written, insurers expanded them to cover almost any moving or movable property, creating regulatory confusion over what was "marine" versus "property" business.
To settle this, the industry adopted the Nationwide Marine Definition (NWMD), first promulgated in 1933 and revised in 1953 and 1976. The NWMD is the authoritative document that defines the classes of property that may properly be written under inland marine (and ocean marine) policies. State regulators use it to police rate filings and prevent marine policies from poaching standard fire/property business.
The practical effect for a candidate is this: any property an insurer writes under an inland or ocean marine policy must fall within an NWMD class. If a risk does not fit a marine class, it belongs under a standard fire/property form instead. This is why a stationary office building cannot be insured as inland marine, while a contractor's mobile crane or a jeweler's traveling stock can. The NWMD is, in effect, the boundary line of the entire marine market.
The Six NWMD Classes
The Nationwide Marine Definition recognizes six broad categories eligible for marine treatment:
- Imports and exports - goods in foreign trade.
- Domestic shipments - property in transit within the country (trucks, rail, parcel).
- Instrumentalities of transportation and communication - bridges, tunnels, piers, pipelines, power transmission lines, radio/TV towers (property that facilitates movement, even if it does not move).
- Personal property floaters - movable personal property (e.g., jewelry, fine arts, cameras) covered wherever it goes.
- Commercial property floaters - movable business property such as contractors' equipment, dealers' stock, and signs.
- Defined "means of transportation" / fixed-location risks that the definition specifically lists.
The recurring exam theme: inland marine covers property that is mobile, in transit, or held by a bailee, plus fixed instrumentalities of transportation/communication. A bridge does not move, yet it is an eligible inland marine instrumentality - a classic counterintuitive trap.
Filed vs. Non-Filed Forms and Common Coverages
Inland marine splits into two markets:
- Filed (controlled) classes - ISO publishes standard forms and rates; e.g., Accounts Receivable, Valuable Papers and Records, Equipment Floaters, Commercial Articles, Camera/Musical Instrument floaters, and the Commercial Inland Marine Conditions (CM 00 01).
- Non-filed (uncontrolled) classes - underwriters have wide latitude to manuscript coverage; e.g., Builders Risk, Installation floaters, Motor Truck Cargo, Bailee forms, and Jewelers Block.
Most inland marine is written open perils (all-risk) on a scheduled or blanket basis, often at agreed/stated value rather than ACV. Coverage commonly applies worldwide or anywhere within the coverage territory - the defining advantage over fixed-location property forms.
Worked example - ACV vs. agreed value on a contractors equipment floater. A wood chipper with ACV of $18,000 (replacement cost $30,000, 40% depreciated) is destroyed. Under an ACV floater the insurer pays $18,000 less the deductible. Under an agreed-value floater scheduled at $30,000, the insurer pays the full $30,000 less deductible - illustrating why contractors prefer agreed/stated-value endorsements on mobile equipment.
Key Floater Forms and Triggers
| Floater | What It Covers | Typical Trigger/Trap |
|---|---|---|
| Accounts Receivable | Loss of sums owed when records are destroyed | Pays when the insured cannot reconstruct who owes what |
| Valuable Papers & Records | Cost to research/replace documents | Covers cost to reconstruct, not market value |
| Contractors Equipment | Mobile tools/machinery at job sites | Often agreed value; covers in transit and at site |
| Bailee (e.g., dry cleaner) | Customers' goods in the insured's care | Covers others' property held by the insured |
| Motor Truck Cargo | Goods a carrier transports for others | Covers the carrier's legal liability for cargo |
| Transit / shipper's | Goods in transit owned by the shipper | First-party coverage during shipment |
A frequent exam scenario: a landscaping company's chipper damaged mid-job is covered by a Contractors Equipment floater, not by a commercial auto or building form, because the equipment is mobile inland marine property.
Two definitions trip up candidates. Valuable Papers and Records pays the cost to research and reconstruct lost documents, not their market value, and excludes money and securities (those belong on a crime form). Accounts Receivable coverage pays the sums the insured cannot collect because the records identifying debtors were destroyed - it responds to the loss of the ability to bill, plus interest and collection expense, rather than to physical damage to paper. Both are filed inland marine classes and both turn on destruction of records rather than theft of cash.
Why "Marine" Covers Things on Land
Inland marine insurance evolved from ocean marine to cover property in transit over land and property that is mobile or floating in value. The Nationwide Marine Definition (adopted by the NAIC) sets the boundaries of what insurers may write as inland marine, preventing overlap with property and ocean marine lines.
The Six Classes Under the Nationwide Definition
| Class | Examples |
|---|---|
| Imports/Exports | Goods in foreign trade |
| Domestic shipments | Property in transit on land/inland waterways |
| Instrumentalities of transportation/communication | Bridges, tunnels, pipelines, radio/TV towers, power lines |
| Personal property floaters | Jewelry, furs, fine arts, cameras (PAF) |
| Commercial property floaters | Contractors equipment, accounts receivable, valuable papers, EDP |
| Bailee coverages | Property of customers in the insured's care |
Floaters and the "Floating" Concept
A floater insures property whose location changes - it "floats" with the item. The exam tests common floaters: the Personal Articles Floater (PAF) schedules jewelry, furs, fine arts, silverware, cameras, golf equipment, stamps, and coins on an open-peril, agreed-value, worldwide basis with no deductible and no coinsurance - curing the homeowners Coverage C theft sublimits. Commercial floaters include the Contractors Equipment Floater, Accounts Receivable, Valuable Papers and Records, and the Installation Floater.
Transit, Bailee, and Transportation Forms
Several inland-marine forms cover transit and bailee exposures the exam expects you to match: the Motor Truck Cargo form (a carrier's legal liability for goods it hauls vs. an owner's-goods form for a shipper's own property), the Bailees Customers form (a launderer or repair shop covering customers' goods regardless of fault to preserve goodwill), and the Transportation/Annual Transit policy for a shipper's recurring shipments. A reliable application item asks whether a dry cleaner's coverage for a customer's damaged suit is a bailee form (correct) or the customer's homeowners policy.
Which document defines the classes of property that insurers may legitimately write under inland marine and ocean marine policies?
A landscaping company's wood chipper is damaged when it overturns at a job site miles from the company yard. Which form most appropriately covers the loss?