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

The Four Core Coverages

Ocean marine insurance is the oldest form of insurance and covers exposures over water. It has four principal coverages:

1. Hull - physical damage to the vessel itself, including machinery and equipment.
2. Cargo - loss or damage to the goods being shipped.
3. Freight - the shipowner's loss of freight revenue (the money earned for transporting cargo) if a voyage fails.
4. Protection and Indemnity (P&I) - the shipowner's legal liability for bodily injury, illness, death, and damage caused by the vessel.

These are often written together but priced and limited separately.

Warranties

Ocean marine is governed by strict warranties - promises by the insured that, if breached, can void coverage. Two categories:

• Express warranties - written into the policy (e.g., the vessel will not sail outside a defined trading area).
• Implied warranties - read into every policy by maritime custom, chiefly:
  • Seaworthiness - the vessel is fit for the voyage.
  • No deviation - the vessel follows the agreed route.
  • Legality - the venture is lawful.

Trap: Breach of an implied warranty of seaworthiness can defeat a claim even if the breach did not cause the loss - warranties are strict in ocean marine.

General Average and Particular Average

"Average" in marine terms means loss. Two key concepts:

• Particular average - a partial loss borne entirely by the owner of the damaged property alone.
• General average - a loss voluntarily and intentionally incurred to save the entire venture (e.g., jettisoning cargo to refloat a grounded ship). The cost is shared proportionally by all parties whose property was saved - vessel, cargo, and freight interests.

Worked Example - General Average Contribution

During a storm, a captain jettisons $100,000 of one shipper's cargo to lighten and save the ship. The total saved values are: vessel $600,000, remaining cargo $300,000, and freight $100,000 - a total saved interest of $1,000,000.

The $100,000 sacrifice is shared in proportion to saved value. The vessel owner contributes 60% ($60,000), remaining cargo owners 30% ($30,000), and freight 10% ($10,000). The shipper whose cargo was jettisoned recovers from the pool. This proportional sharing is the essence of general average.

Cargo Coverage Forms and Perils

Ocean cargo can be written on a named-perils basis or, more commonly today, on all-risk (open-perils) terms subject to exclusions. The perils of the sea clause covers losses such as sinking, stranding, collision, and heavy-weather damage - but ordinary wear, leakage, and inherent vice are excluded.

Cargo is often written under an open cargo policy that automatically covers all shipments a company makes during the policy term, with values reported as they ship. This is convenient for exporters/importers with frequent movements, parallel to the annual inland transit concept but for waterborne shipments.

Total Loss Concepts and Coverage Limits

Ocean marine recognizes two kinds of total loss: an actual total loss (the property is destroyed or so damaged it ceases to be the thing insured) and a constructive total loss (the cost to repair or recover exceeds the insured value, so the insured abandons it to the insurer).

When a constructive total loss is declared, the insured tenders a notice of abandonment and, if accepted, collects the full insured value while the insurer takes title to the salvage. P&I limits are typically high and may be placed through mutual insurance associations (P&I Clubs) rather than standard carriers, because shipowner liability exposures can be catastrophic and are pooled among members.

Running-Down Clause and Coinsurance

Hull policies include a running-down clause (RDC), also called the collision liability clause, which covers the insured shipowner's liability to another vessel after a collision the insured caused. The RDC is a liability extension inside an otherwise property-based hull form, and exams test that physical damage to the insured's own hull is separate from the liability the RDC addresses.

Unlike most property forms, ocean marine cargo often carries a coinsurance clause because values are typically insured to full value. If a shipper insures a $500,000 cargo to only $400,000 under a policy requiring 100% coinsurance, a $100,000 partial loss is reduced proportionally to $80,000 (400,000 / 500,000 x 100,000), leaving the shipper to absorb the shortfall as a penalty for underinsuring.

The Four Ocean Marine Coverages

Ocean marine is the oldest line of insurance and is built from four interlocking coverages — know each:

Average, Perils Clauses, and Implied Warranties

Ocean marine has unique vocabulary the exam tests. General average is a loss voluntarily incurred to save the whole venture (e.g., jettisoning cargo in a storm); the sacrifice is shared proportionally by all parties to the voyage. Particular average is a partial loss borne by the owner of the damaged property alone.

The Perils Clause lists covered marine perils (perils "of" the sea like storms and sinking, versus perils "on" the sea like fire, jettison, and barratry). Ocean marine also imposes implied warranties: seaworthiness of the vessel, legality of the venture, and no deviation from the agreed route — breach can void coverage.

Constructive Total Loss and the Running-Down Clause

When repair cost would exceed the insured value, the insured can declare a constructive total loss, tender a notice of abandonment, and collect the full insured value while the insurer takes the salvage. The hull policy's Running-Down Clause (RDC) — a liability extension inside a property form — covers the insured shipowner's collision liability to another vessel. Damage to the insured's own hull is a separate property recovery; the RDC handles only what the insured owes the other vessel. Distinguishing the property recovery from the RDC liability is a recurring ocean-marine exam point.