Introduction to Ocean Marine Insurance

Ocean marine insurance is widely considered the oldest form of insurance in existence. Because of its long history, many of the principles governing these policies are rooted in maritime law and century-old traditions that differ significantly from modern homeowners or auto insurance. For candidates preparing with our complete Claims Adjuster exam guide, understanding the nuances of Ocean Marine is essential, particularly regarding the high standard of conduct required of the insured.

In standard property insurance, a breach of a minor condition might not automatically void a claim. However, in the world of Ocean Marine, warranties are treated with extreme strictness. A warranty is a promise that something is true or will be done. If a warranty is breached, the insurer can often void the entire policy from the moment of the breach, regardless of whether the breach actually caused the loss.

Key Pillars of Ocean Marine Warranties

Implied
Type of Warranty
⚖️
Absolute
Strictness
🚢
Seaworthiness
Primary Focus
🚫
Void Policy
Consequence

The Concept of Implied Warranties

Unlike express warranties, which are explicitly written into the policy document, implied warranties are not written down. They are understood to be part of the contract by law and custom. Every party entering into an Ocean Marine contract is assumed to agree to these conditions automatically.

For a claims adjuster, these are critical because they provide a basis for denying coverage even if the policy language doesn't explicitly mention the violation. There are three primary implied warranties that every adjuster must know:

  • Seaworthiness: The most important implied warranty.
  • Legality: The voyage must serve a legal purpose.
  • No Deviation: The vessel must follow a specific, customary route.

The Implied Warranty of Seaworthiness

The warranty of seaworthiness is an absolute guarantee by the shipowner that the vessel is fit for its intended voyage. This does not just mean the hull is intact; it covers a broad range of operational requirements.

To be considered seaworthy, the vessel must have:

  • A sound hull and functioning machinery capable of withstanding the ordinary perils of the sea.
  • A competent and sufficiently numbered captain and crew.
  • The proper fuel, provisions, and equipment for the specific journey planned.
  • Safe and proper stowage of cargo.

If a ship departs and it is later discovered that the engines were faulty or the crew was untrained, the implied warranty of seaworthiness has been breached. If a loss occurs, even if the loss was caused by a storm and not the engine, the insurer may deny the claim because the policy was effectively voided the moment the ship sailed in an unseaworthy state.

Express vs. Implied Warranties

FeatureExpress WarrantiesImplied Warranties
DocumentationWritten in the policyNot written; understood by law
ExamplesLimit on number of crewSeaworthiness, Legality
Burden of ProofBased on policy textBased on maritime tradition
Impact of BreachCan void coverageStrictly voids coverage

Legality and No Deviation

Beyond seaworthiness, adjusters must evaluate the legality and the route of the voyage. These two implied warranties ensure that the risk the insurer is taking on is legitimate and predictable.

Legality

The implied warranty of legality states that the voyage must be for a legal purpose and must comply with all applicable laws and regulations. If a vessel is being used to smuggle contraband or engage in illegal trade, the insurance policy is void. This applies even if the loss (such as a fire on board) has nothing to do with the illegal nature of the cargo.

No Deviation

The implied warranty of no deviation requires the vessel to follow the route specified in the policy or, if no route is specified, the most direct and customary route between the ports. Any unnecessary departure from this route voids the coverage.

However, there are legal exceptions where deviation is permitted:

  • To avoid bad weather or dangerous conditions (perils of the sea).
  • To save human life or assist a vessel in distress.
  • To obtain necessary medical aid for someone on board.
  • For reasons beyond the control of the master or crew.
ℹ️

Adjuster Tip: Burden of Proof

When investigating an Ocean Marine claim, always verify the logbooks. A breach of the 'No Deviation' warranty is often discovered by comparing the intended coordinates with the actual path recorded in the ship's log. You can practice identifying these scenarios with our practice Claims Adjuster questions.

Frequently Asked Questions

Generally, the implied warranty of seaworthiness applies at the commencement of each stage of the voyage. If a ship is seaworthy when it leaves port but suffers damage due to a peril of the sea during the trip, the warranty is not breached. The vessel must be fit at the start of the journey.
While the shipowner warrants the vessel is seaworthy, the cargo owner (the shipper) generally does not have control over the ship. In many modern cargo policies, the 'seaworthiness admitted' clause is used, meaning the insurer agrees not to deny a cargo claim based on the ship's unseaworthiness, provided the cargo owner was not aware of the condition.
Strictly speaking, maritime law traditionally allows deviation to save life, but deviating solely to save property (like towing a derelict ship for salvage money) might be considered a breach of the warranty unless the policy states otherwise.
An adjuster must verify that the vessel was not engaged in activity that violates the laws of the country where the policy was issued or the laws of the vessel's flag state. If the voyage is deemed 'illegal' at its inception, the risk never attached, and the policy is void.