14.3 Inland Marine and Nationwide Marine Definition

Origins and the Nationwide Marine Definition

Inland marine insurance is the land-based offspring of ocean marine. As goods began traveling inland by rail and truck, marine underwriters extended coverage beyond the dock. To stop inland marine from poaching ordinary fire/property business, the industry adopted the Nationwide Marine Definition in 1953 (amended several times since). It is the controlling document that lists exactly which classes of property may be insured under inland or ocean marine forms.

The six classes recognized by the definition are:

1. Imports — property coming into the country, coverage continues until it reaches its final inland resting place.
2. Exports — property being shipped out of the country.
3. Domestic shipments — goods in transit within the country (motor truck cargo, transportation floaters).
4. Instrumentalities of transportation and communication — bridges, tunnels, piers, pipelines, power transmission lines, radio/TV towers, and similar fixtures.
5. Personal property floaters — movable personal property (jewelry, furs, cameras).
6. Commercial property floaters — movable business property (contractors' equipment, dealers' stock).

A key tested point: a building is real property at a fixed location and is not eligible for inland marine — but a bridge or pipeline (an instrumentality of transportation) is eligible even though it does not move, because the definition expressly lists it.

What Inland Marine Covers

Think of inland marine as protecting property characterized by movement, transportation, or holding away from the owner's premises:

Common Floaters

A floater covers movable property wherever it is located — coverage "floats" with the item.

• Personal Articles Floater (PAF): Schedules high-value personal items (jewelry, furs, fine art, cameras, silverware, stamp/coin collections) on an open-perils, agreed-value basis, worldwide, usually with no deductible and no coinsurance. It fills gaps left by the special-limits sublimits in a homeowners policy.
• Commercial Articles Floater: Same idea for business equipment such as photographic and audiovisual gear.
• Contractors Equipment Floater: Covers tools, mobile machinery, and equipment of a contractor on the job, in transit, or in storage.
• Bailee's Customers form: Covers the customers' property in the insured bailee's care (dry cleaner, repair shop), protecting goodwill even where the bailee is not legally liable.

How Inland Marine Is Rated and Written

Inland marine is a non-filed (unregulated) line in most states — insurers generally do not have to file forms and rates with the state for the truly mobile classes. This gives underwriters wide flexibility to tailor coverage. Inland marine is normally written on an open-perils (all-risk) basis: everything is covered except what is specifically excluded (wear and tear, gradual deterioration, war, nuclear). Many floaters use agreed value or scheduled limits, and most have no coinsurance, paying scheduled items to the agreed amount.

Worked Coverage Example

A homeowner owns a $30,000 diamond ring. The unendorsed HO policy caps theft of jewelry at a $1,500 special limit. Writing the ring on a Personal Articles Floater at an agreed value of $30,000 means a covered total loss pays $30,000 with no deductible — versus only $1,500 under the base homeowners theft sublimit. This gap-fill is the textbook reason floaters exist.

Filed vs. Non-Filed Inland Marine

Not all inland marine is unregulated. The industry separates non-filed (controlled) classes — truly mobile, individually rated risks such as contractors' equipment, jewelers block, and motor truck cargo — from filed classes that ISO standardizes and that states regulate, including the Commercial Inland Marine Conditions form and standard floaters like the Accounts Receivable, Valuable Papers and Records, and Electronic Data Processing (EDP) coverage forms. Filed classes use ISO forms with set rules; non-filed classes give the underwriter freedom to craft manuscript terms.

Exam stems may ask which floaters are filed versus non-filed. A reliable cue: if the property is essentially stationary records at a fixed business (accounts receivable, valuable papers, computer media), it is usually a filed class; if it genuinely travels or moves with the insured, it tends to be non-filed and individually rated.

Transit and Bailee Forms in Practice

For goods moving over land, the Transportation (Transit) floater and Motor Truck Cargo forms protect the cargo owner or the trucker, respectively. A carrier's legal liability for customers' goods is covered by the Motor Truck Cargo — Carriers Form, while the shipper's own interest uses the Owners Form. Bailee coverage divides the same way: the Bailee's Customers form pays the customer's loss as goodwill protection regardless of fault, whereas a Warehouse Operators Legal Liability form pays only when the bailee is legally responsible. Matching the right form to who bears the risk is a recurring question.

Common Traps

• A building is real property and is not eligible for inland marine; a bridge/pipeline (instrumentality) is eligible.
• Inland marine is largely non-filed for mobile classes, but filed classes (Accounts Receivable, Valuable Papers, EDP) use standard ISO forms.
• The PAF is worldwide, open-perils, agreed-value, usually with no deductible.
• The Bailee's Customers form covers the customer's property regardless of fault; legal-liability forms pay only when the bailee is at fault.