14.3 Inland Marine and Nationwide Marine Definition

Origins and the Nationwide Marine Definition

Inland marine insurance evolved from ocean marine when underwriters extended transit coverage from the sea onto inland routes (rail, truck, river). To define what inland marine carriers could lawfully write, the industry adopted the Nationwide Marine Definition, which most states use.

The definition lists eligible categories, generally:

1. Imports and exports (goods in foreign trade)
2. Domestic shipments / property in transit over land
3. Instrumentalities of transportation and communication — bridges, tunnels, pipelines, radio/TV towers, power transmission lines
4. Personal and commercial floaters — movable or mobile property that travels or has no fixed location (jewelry, fine arts, contractors equipment, computers)

The unifying theme: inland marine covers moving, movable, or transportation-related property, not property sitting permanently at one fixed building.

Filed vs. non-filed (controlled vs. uncontrolled) classes

Inland marine classes are split by whether forms and rates must be filed with the state.

• Filed / controlled classes: Use standard ISO forms and filed rates. Examples include accounts receivable, valuable papers, signs, contractors equipment, and many commercial floaters.
• Non-filed / uncontrolled classes: Allow manuscript (custom) forms and flexible rating. Examples include jewelers block, furriers block, fine arts dealers, and many specialized risks. This flexibility lets underwriters tailor coverage to unusual exposures.

Trap: Non-filed does not mean unregulated conduct — it means the form and rate are not bound to a filed standard, giving the insurer latitude to manuscript coverage.

Major inland marine floaters

Most floaters are written open perils with broad territory and frequently no coinsurance, reflecting the mobile nature of the property.

Bailee coverage example

A dry cleaner accepts customers' garments. A fire destroys $8,000 of customers' clothing. The cleaner's commercial property covers the cleaner's own equipment and stock — but customers' garments are property of others in the insured's care, custody, or control.

A bailee floater (inland marine) covers the customers' property the insured is holding, paying the $8,000 to make the customers whole regardless of whether the bailee was negligent (depending on form). The exam point: property of others held by a business is an inland marine bailee exposure, not a fixed-location property exposure, because the bailee assumes responsibility for movable property belonging to others.

Transit forms

Transit coverage handles the insured's own goods moving over land:

• Annual Transit — ongoing shipments throughout the year on a blanket basis
• Trip Transit — a single specified shipment
• Motor Truck Cargo — covers a for-hire trucker's legal liability for cargo it carries for others (carrier form), distinct from a shipper insuring its own goods

Transit covers the gap between the protection at the point of origin and the protection at destination, which is exactly the void left by fixed-location commercial property forms.

Released vs. full-value bills of lading: When a common carrier issues a released (limited-value) bill of lading, its liability for cargo damage is capped at a low per-pound amount (for example, $0.60/lb). A shipper that wants full protection must either declare a higher value (paying more freight) or insure the goods under its own transit/cargo floater. This is why shippers buy inland marine transit coverage rather than relying on the carrier — a recurring exam scenario testing who actually bears the cargo loss.

The Nationwide Marine Definition

Inland marine grew out of ocean marine to cover property in transit and instrumentalities of transportation/communication. The Nationwide Marine Definition (adopted by the NAIC) lists the classes an inland-marine policy may insure, including:

• Domestic shipments (transportation floaters);
• Bridges, tunnels, pipelines, and other instrumentalities of transportation/communication;
• Personal property floaters (jewelry, fine arts, cameras);
• Commercial property floaters (contractors equipment, accounts receivable, valuable papers, EDP).

A defining feature is that inland-marine coverage is usually open-peril, agreed-value or scheduled, and follows the property wherever it goes — solving the gap that fixed-location property forms leave for mobile or transit exposures.

Common Inland-Marine Floaters and a Worked Example

Worked example: a $20,000 engagement ring scheduled on a PAF is lost down a drain. Because the PAF is open-peril and agreed value, the insurer pays the scheduled $20,000 with no deductible — whereas an unendorsed HO policy caps theft of jewelry near $1,500 and would not cover mysterious disappearance.