14.3 Inland Marine and Nationwide Marine Definition

Inland Marine Insurance

Inland marine evolved from ocean marine to cover goods over land - cargo in transit by truck or rail - and expanded to property that is portable, in transit, or instrumental to communication/transportation. Because it grew up outside fire-bureau control, inland marine is famously flexible: many forms are non-filed, and coverage is typically broad ('all-risk'/open perils) on an agreed-value or replacement-cost basis with no coinsurance.

The scope of inland marine is fenced in by the Nationwide Marine Definition, the touchstone document the exam loves to reference.

The Nationwide Marine Definition

First adopted in 1933 and revised in 1953/1976, the Nationwide Marine Definition is a regulatory statement listing the classes of property that may properly be insured under marine (ocean or inland marine) policies. It exists to prevent inland marine forms from poaching ordinary fixed-location fire/property risks. Without it, insurers could exploit inland marine's rate freedom to write standard buildings at unregulated rates, undermining the filed-property market.

The six broad categories eligible for inland marine are:

1. Imports and exports.
2. Domestic shipments (goods in transit).
3. Instrumentalities of transportation/communication (bridges, tunnels, pipelines, power transmission lines, radio/TV towers).
4. Personal property floaters.
5. Commercial property floaters.
6. (Ocean marine subjects handled separately.)

The word 'floater' signals the central inland marine idea: coverage that travels with the property rather than attaching to a fixed location. A laptop, a contractor's backhoe, or a touring band's instruments move constantly, so a location-based fire policy is a poor fit. Floaters typically follow the property anywhere within a defined territory, which is why inland marine is the natural home for portable, in-transit, and high-value mobile property.

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

Inland marine splits into two regulatory buckets:

Trap: Non-filed (uncontrolled) classes give underwriters wide latitude to write custom terms; filed classes follow standardized bureau forms. Knowing which bucket a coverage falls in is a frequent question.

Common inland marine forms

• Accounts Receivable - reconstructs records and covers uncollectible balances after records are destroyed.
• Valuable Papers & Records - documents, manuscripts, media (not money/securities).
• Bailee forms - a business covers customers' property in its care (dry cleaner, repair shop).
• Motor Truck Cargo - a carrier's liability for cargo it hauls.
• Transportation/Trip Transit - goods shipped by the insured.
• Equipment/Contractors' Equipment floater - mobile tools/machinery anywhere.
• Installation floater - materials until installation is complete.

Two more high-frequency forms: the Jewelers Block and Furriers Block cover a dealer's own stock plus customers' goods held for repair or sale, and the Physicians & Surgeons Equipment floater covers medical and office equipment. Builders Risk - covering a structure under construction - is often written as inland marine but may also appear under commercial property; know that it terminates when the project is accepted or occupied.

Valuation and a worked example

Most inland marine floaters use replacement cost or agreed value with no coinsurance, but some equipment floaters still use ACV. Example - a contractor's 4-year-old excavator (8-year life) costs $80,000 new and is destroyed.

• Straight-line depreciation = $80,000 / 8 = $10,000/yr.
• 4 years depreciation = $40,000.
• ACV recovery = $80,000 - $40,000 = $40,000 (less any deductible).
• On an agreed-value floater, the insurer pays the stated value (e.g., $55,000) regardless of depreciation.

Know which valuation the form uses - the answer changes dramatically. Because most inland marine floaters drop coinsurance, the insured is not penalized for underinsurance the way a commercial property insured would be; instead the recovery is simply capped at the floater's limit. When an agreed-value clause applies, the insurer and insured stipulate the value in advance, which removes valuation disputes at claim time but obligates the insured to schedule items and update values as property is added or removed.

Bailee Liability and Builders Risk Nuances

Two inland marine concepts generate exam questions. A bailee (dry cleaner, repair shop, warehouse) holds customers' property and can insure it either on a bailee liability form (pays only when the bailee is legally liable) or a bailee customers' form (pays the customer regardless of fault as a goodwill coverage). Builders Risk insures a structure under construction - covering materials, fixtures, and the building until the project is accepted or occupied, when coverage terminates.

Trap: Builders risk ends at acceptance or occupancy - a loss the day after the owner moves in needs the permanent property policy, not builders risk. And most inland marine floaters carry no coinsurance, so recovery is simply capped at the floater limit.

High-Value Block Policies and Equipment Floaters

Dealers in specialized goods use block policies that cover both the dealer's own stock and customers' property held for repair or sale: the Jewelers Block and Furriers Block are the classic examples, with the Camera/Musical Instrument and Equipment Dealers floaters close behind. Contractors' Equipment floaters cover mobile tools and machinery anywhere within the territory, on an ACV or agreed-value basis with no coinsurance.

Trap: The Nationwide Marine Definition is a regulatory boundary, not a coverage form - it lists what may be written as inland/ocean marine to stop insurers from writing ordinary fixed-location buildings at unregulated marine rates. It defines eligibility, not the policy terms.