14.4 Ocean Marine Coverages (hull, cargo, freight, P&I)
Key Takeaways
- Ocean marine is the oldest commercial insurance line; the modern market traces to Edward Lloyd's coffeehouse in 1680s London, the origin of Lloyd's of London.
- Four core coverages: Hull (the vessel), Cargo (goods at sea), Freight (the shipping revenue), and Protection and 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 requires 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 owner alone.
- The Sue and Labor clause pays loss-mitigation expenses in addition to the limit, and strict implied warranties (seaworthiness, legality, no deviation) can void coverage if breached.
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, organized into four coverages: hull, cargo, freight, and protection and indemnity.
Unlike most property-casualty 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.
The Four Core Coverages
| Coverage | What It Insures | Key Detail |
|---|---|---|
| Hull | The vessel, machinery, equipment | Running-down (collision liability) clause |
| Cargo | Goods shipped by sea | Often warehouse-to-warehouse |
| Freight | 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, and damage to fixed objects such as piers - fall to P&I.
Under the Jones Act, a seaman injured in the course of employment may sue the vessel owner for negligence; these claims fall to P&I rather than ordinary workers compensation, because seamen are excluded from most state WC systems.
Perils of the Sea and Exclusions
"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 naturally rusts in humid holds - is a classic excluded trap: the cargo's own nature, not a sea peril, caused the loss.
Cargo Clauses and Valuation
Ocean cargo coverage is shaped by standardized Institute Cargo Clauses (historically labeled A, B, and C). Clause A is the broadest open-peril form; B and C are progressively narrower named-peril forms. A cargo policy typically attaches warehouse-to-warehouse, covering the inland legs at each end, and is usually written on a valued (agreed amount) basis paid without depreciation. 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.
Average: General vs. Particular
In marine law, "average" means a partial loss, and two kinds appear constantly on the exam.
General Average
When property is voluntarily and reasonably sacrificed for the common safety of the venture, all parties - shipowner and every cargo owner - share the loss proportionally to the value saved.
Worked Example: A freighter carries 1,000 containers valued at $20,000,000 total. To save the ship from a fire, the captain jettisons 200 containers worth $4,000,000. Under general average, every party contributes pro rata to the value saved, so an owner whose surviving cargo equals 10% of total value pays roughly 10% of the $4,000,000 sacrifice. 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.
| Doctrine | Trigger | Who Pays |
|---|---|---|
| General average | Voluntary sacrifice for common safety | All parties, pro rata |
| Particular average | Accidental partial loss | Owner of the lost property alone |
To save a burning vessel, the captain orders part of the cargo jettisoned. Under marine law, how is this loss allocated?
The Sue and Labor Clause and Implied Warranties
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 (over and above) the policy limit, encouraging salvage even near the limit.
Example: A grounded ship's owner spends $300,000 on a salvage firm to refloat the vessel and recover cargo. Even if the hull loss already approaches the limit, the $300,000 sue-and-labor cost is paid additionally, not within the limit.
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.
Common Exam Traps
- General vs. particular average is the single most-tested ocean marine distinction - "general = shared, particular = owner alone."
- P&I vs. hull collision - hull's running-down clause covers vessel-to-vessel collision liability; P&I covers crew, passengers, pollution, and fixed objects.
- Sue and labor pays extra, not within the limit.
- Jones Act crew injury routes to P&I, not workers compensation.
A cargo of bananas arrives partly rotted because the voyage took longer than expected, and the ocean cargo policy denies the claim. What is the most likely reason?