14.4 Ocean Marine Coverages (hull, cargo, freight, P&I)
Key Takeaways
- Ocean marine is the oldest commercial insurance line, tracing to Edward Lloyd's coffeehouse in 1680s London, the origin of Lloyd's; it is governed heavily by admiralty (maritime) law
- Four core coverages: Hull (the vessel, with a running-down/collision-liability clause), Cargo (goods at sea, often warehouse-to-warehouse), Freight (the shipping revenue at risk), and Protection & Indemnity / P&I (maritime liability)
- Perils of the sea include storm, sinking, stranding, collision, and jettison; inherent vice, ordinary wear, and delay are excluded, and war/strikes require separate coverage
- General average forces all parties to share proportionally when property is voluntarily sacrificed for the common safety; particular average is an accidental partial loss borne by the property owner alone
- The Sue and Labor clause pays loss-mitigation costs in addition to the limit; implied warranties of seaworthiness, legality, and no deviation are strictly enforced; the Jones Act routes crew injury into P&I, not workers compensation
The Oldest Insurance Line
Ocean marine insurance predates fire and life insurance by centuries. The modern market traces to Edward Lloyd's coffeehouse in London in the 1680s, where shipowners and merchants found underwriters willing to subscribe to portions of a voyage's risk - the origin of today's Lloyd's of London.
Quick Answer: Ocean marine insures vessels, cargo, shipping revenue, and maritime liability for over-water commerce through four coverages: hull, cargo, freight, and protection & indemnity.
Unlike most P&C lines, ocean marine is governed heavily by admiralty (maritime) law and long-settled doctrines such as average and sue-and-labor. The exam rewards knowing these doctrines, not just the coverage names. Ocean marine handles the waterborne voyage; the land legs at each end belong to inland marine - the over-water boundary from Section 14.3 separates the two lines.
The Four Core Coverages and Perils of the Sea
| Coverage | What It Insures | Key Clause/Detail |
|---|---|---|
| Hull | The vessel, machinery, equipment | Running-down (collision liability) clause |
| Cargo | Goods shipped by sea | Often "warehouse to warehouse" |
| Freight | The shipping revenue lost if cargo never arrives | Protects the carrier's/shipper's income |
| Protection & Indemnity (P&I) | Maritime liability | Crew injury (Jones Act), pollution, dock damage |
The running-down clause (RDC) within hull coverage pays the insured vessel owner's liability for collision with another vessel - a liability item carried inside a property coverage, which surprises candidates. Broader liabilities (crew, passengers, pollution, fixed objects like piers) fall to P&I.
Perils of the sea and what is excluded
"Perils of the sea" means fortuitous, accidental dangers - not every peril encountered on the sea.
| Covered (Perils of the Sea) | Excluded |
|---|---|
| Storm, heavy weather, sinking | Ordinary wear and tear |
| Stranding, grounding | Inherent vice (cargo that self-spoils) |
| Collision, jettison | Delay (even if a peril caused it) |
| Fire, lightning, piracy | War, strikes, riots (separate coverage) |
Inherent vice - fruit that rots, steel that rusts in humid holds - is a classic excluded trap: the cargo's own nature, not a sea peril, caused the loss.
Average, Sue and Labor, Warranties, and the Jones Act
In marine law, "average" means a partial loss. Two kinds appear constantly on the exam.
General average
When property is voluntarily and reasonably sacrificed for the common safety of the whole venture, all parties - shipowner and every cargo owner - share the loss proportionally to the value saved.
Example: A fire threatens a freighter and the captain jettisons 200 of 1,000 containers to save the ship and remaining cargo. Under general average, all cargo owners and the shipowner contribute pro rata, so the owners of the dumped containers are reimbursed by everyone who benefited.
Particular average
A partial loss that is accidental and falls only on the owner of the damaged property - no sharing. Seawater spoils one shipper's cargo in a storm; that shipper alone bears it (subject to their own cargo policy).
| Doctrine | Trigger | Who Pays |
|---|---|---|
| General average | Voluntary sacrifice for common safety | All parties, pro rata |
| Particular average | Accidental partial loss | Owner alone of the lost property |
The Sue and Labor clause
The Sue and Labor clause requires the insured to take reasonable steps to prevent or minimize an insured loss, and the insurer reimburses those expenses in addition to the policy limit - encouraging salvage even near the limit. If a grounded ship's owner pays $300,000 to refloat it, those costs are paid on top of the loss.
Implied warranties (strictly enforced)
Marine policies impose strict implied warranties - breach can void coverage even without causation:
- Seaworthiness - the vessel is fit for the voyage.
- Legality - the venture is lawful.
- No deviation - the vessel follows the customary route without unjustified detour.
Cargo clauses, valuation, and the Jones Act
Ocean cargo is shaped by the standardized Institute Cargo Clauses (A, B, C): Clause A is the broadest open-peril form; B and C are progressively narrower named-peril forms. Coverage often attaches warehouse-to-warehouse. The Free of Particular Average (FPA) clause pays a partial loss only if it results from a major peril such as stranding, sinking, burning, or collision. Cargo is usually written on a valued (agreed amount) basis, paying the stated value with no depreciation.
Under the Jones Act, an injured seaman sues the vessel owner for negligence and the claim falls to P&I, not workers compensation - a high-value exam distinction.
Deductibles, valuation, and exam shortcuts
Hull policies may carry a coinsurance clause unusual to property candidates, because owners are expected to insure to a high percentage of value, and cargo is settled on a valued basis to avoid the impossibility of appraising goods after a sinking. Remember three quick shortcuts: general = shared, particular = owner alone; hull's running-down clause = vessel-to-vessel collision liability while P&I = crew, passengers, pollution, and fixed objects; and sue-and-labor pays in addition to the limit, never within it. These three contrasts account for the majority of ocean marine questions.
To save a burning vessel, the captain orders part of the cargo jettisoned. Under marine law, how is this loss allocated?
A deckhand is injured by a negligently maintained winch while the vessel is at sea. Under which ocean marine coverage and legal framework is this crew-injury claim handled?