14.4 Ocean Marine Coverages (hull, cargo, freight, P&I)

The four ocean marine coverages

Ocean marine is the oldest form of insurance and remains largely unregulated as to forms and rates because of its international, commercial nature. A complete ocean marine program can include four distinct coverages, often on separate policies:

• Hull - physical damage to the vessel itself, its machinery, and equipment. Written for an agreed value; includes collision liability via the Running Down Clause (Collision Clause).
• Cargo - the goods being shipped, usually open-peril, often on an agreed-value basis and arranged by voyage or open (reporting) policy.
• Freight - the shipping revenue the carrier would earn; if cargo is lost and freight is not collected, the freight coverage indemnifies the lost earnings.
• Protection & Indemnity (P&I) - the vessel owner's liability to others: bodily injury to crew and passengers, damage to docks, cargo liability, and pollution. P&I fills the liability gap the hull policy leaves open.

Warranties and key clauses

Ocean marine relies heavily on implied and express warranties. Three implied warranties are tested:

• Seaworthiness - the vessel is fit for the voyage and properly crewed and equipped.
• No deviation - the vessel follows the customary route without unjustified departure.
• Legal purpose - the venture is lawful.

A breach of warranty can void coverage. Important named clauses:

General Average vs. Particular Average

In marine terms, average means loss, and the distinction is heavily tested. Particular Average is a partial loss that falls on the owner of the damaged property alone (for example, seawater damages one shipper's cargo). General Average is a partial loss arising from a voluntary, intentional sacrifice or expenditure made for the common safety of the venture (for example, jettisoning some cargo to refloat a grounded ship). A general-average loss is shared proportionally by all parties to the voyage - vessel, cargo owners, and freight interest - based on the value each had at risk.

Three requirements for a general-average act: the sacrifice must be voluntary/intentional, reasonable, and made for the common good in a real peril. If any element is missing, the loss stays particular. Cargo policies typically cover the insured's general-average contribution even when the insured's own goods were undamaged.

Worked numeric: general-average contribution

A ship grounds; the captain orders $100,000 of Cargo A jettisoned to save the venture. At the moment of sacrifice the values at risk are: Vessel $2,000,000, Cargo A $500,000, Cargo B $1,500,000 (total $4,000,000). The general-average loss is shared in proportion to each interest's value.

Cargo A's owner sacrificed $100,000 but recovers contributions from the others, ultimately bearing only its $12,500 proportional share. Each cargo owner's marine policy typically pays that owner's general-average contribution.

Total losses, cargo policy structures, and exam traps

Ocean marine recognizes more than one kind of total loss. An Actual Total Loss occurs when the property is completely destroyed, irretrievable (a sunken cargo), or so damaged it ceases to be the thing insured. A Constructive Total Loss occurs when the cost to recover and repair the property would exceed its insured value - the owner abandons it to the insurer and claims a total loss. Abandonment to the insurer triggers the insurer's right to salvage.

Cargo can be written several ways, and matching the structure to the shipper is tested:

The FPA, WA, and all-risk clauses set the partial-loss breadth. FPA (Free of Particular Average) pays partial losses only when a major peril (stranding, sinking, burning, collision) occurs. WA (With Average) pays partial losses once they exceed a stated franchise percentage. All-risk cargo is the broadest and pays for physical loss or damage except for excluded causes such as inherent vice, ordinary leakage, and delay.

Final traps to lock in: P&I (not hull) handles crew and third-party liability; freight insures lost shipping revenue, not the goods; general average is shared by all interests while particular average falls on one owner; and ocean marine is governed by warranties whose breach can void coverage. Because ocean marine is largely exempt from state form regulation, exam questions test concepts and clauses rather than standardized statutory forms.

For cargo moving by sea, recognize the common Institute Cargo Clauses lettering: Clauses (A) are broadest (all-risk), (C) are narrowest (named major perils only), and (B) sit in between. While U.S. exams rarely require the exact lettering, they do expect you to know that an all-risk cargo basis is broader than a named-peril basis, and that even all-risk excludes inherent vice, ordinary wear, delay, and intentional misconduct. Tie this back to FPA/WA so you can rank partial-loss breadth from narrowest to broadest on a comparison question.