Marine Insurance: Types of Policies – Voyage, Time, Mixed, Valued, Unvalued, Floating

Last updated on:

May 11, 2026

When goods leave a port in Mumbai bound for Rotterdam, or a cargo ship crosses the Arabian Sea, the people who own that ship and those goods are exposed to serious financial risk. Storms, collisions, fire, theft, and the simple unpredictability of the open sea can wipe out lakhs or crores in a single incident. Marine insurance exists to manage exactly this kind of risk. But marine insurance is not a single, uniform product. It comes in several policy types, each built for a different shipping situation. Understanding these types is essential for anyone studying trade, logistics, or business risk, because the right policy can mean the difference between a smooth claim and a rejected one.

What marine insurance actually means
Policies based on duration and route
Voyage policy
Time policy
Mixed policy
Policies based on how value is fixed
Valued policy
Unvalued policy
Policies for regular shippers
Floating policy
Why these distinctions matter in practice

What marine insurance actually means

Marine insurance is a contract in which the insurer agrees to compensate the owner of a ship or cargo for loss or damage suffered during a sea voyage. According to Section 3 of the Marine Insurance Act, 1963, it is an arrangement where the insurer undertakes to indemnify the assured against marine losses, that is, losses incidental to a marine adventure, in the manner and to the extent agreed. The coverage is not limited to the water alone. It can also extend to land risks that are incidental to the sea voyage, such as goods being moved to and from the dock.

The subject matter of marine insurance generally falls into three categories. Hull refers to the ship or vessel itself. Cargo refers to the goods being transported. Freight refers to the money a shipowner earns for carrying cargo, which is lost if the goods never reach their destination. A single policy may cover one of these or a combination, depending on what the policyholder needs to protect.

In India, marine insurance is governed by the Marine Insurance Act, 1963, which came into force on 1 August 1963. The Act regulates how these contracts work, what counts as a valid claim, and how compensation is measured. It draws heavily from British marine insurance law and remains the legal backbone of every marine insurance contract written in the country.

One important point: marine insurance is a contract of indemnity. This means the insurer is only liable for the actual loss suffered, not for any profit. The goal is to restore the assured to the financial position they held before the loss, no more and no less.

Policies based on duration and route

The first way marine insurance policies are classified is by how coverage is defined over time and distance. The Act recognises both voyage and time as valid bases for a contract, and allows the two to be combined. This gives us three closely related policy types: voyage, time, and mixed.

Voyage policy

A voyage policy covers the ship or cargo for one specific journey only, from a named port of departure to a named port of destination. Once the voyage is complete, the cover ends. This type of policy is most useful for one-off or irregular shipments, where the owner simply wants protection for a single trip rather than ongoing coverage.

There is an important condition attached. The insurer is generally not liable if the destination is changed or if the ship deviates from the agreed route. Marine insurance assumes the voyage will follow the route described in the contract. If the ship wanders off course, the risk changes, and the insurer may refuse the claim. There is, however, a reasonable exception: deviation is excused when it is done to ensure safety or to save human life. A captain who changes course to avoid a violent storm or to rescue people in distress will not void the policy by doing so.

Time policy

A time policy covers risks during a fixed period of time, regardless of how many voyages the ship makes within that window. Whether the vessel completes one voyage or twenty during the covered period, all of them fall under the same policy. This suits shipowners and businesses that operate vessels regularly and want continuous, uninterrupted protection.

The law places a clear limit here. Under the Act, a time policy made for a period exceeding twelve months is invalid. So the maximum duration is one year. To deal with the practical problem of a voyage that is still underway when the policy expires, most time policies include a continuation clause. This clause extends the cover until the ship safely reaches its port of destination, so a vessel caught mid-journey at the moment of expiry is not left suddenly uninsured.

Mixed policy

A mixed policy combines the features of both voyage and time policies. It covers a particular voyage and also restricts that cover to a specified period of time. The Act expressly permits a contract that includes both voyage and time elements in the same policy.

A classic textbook example makes this clear. Consider a policy covering a voyage from Bombay to Amsterdam, valid from 1 November 1998 to 31 January 1999. Here, both conditions must be satisfied: the ship must be making that specific voyage, and the loss must occur within that date range. Mixed policies work well for vessels engaged in chartered trade or for ships that make several trips within a defined contract period, where coverage needs to reflect both the journey and the calendar.

Policies based on how value is fixed

The second classification depends on whether the value of the insured property is agreed at the start of the contract or worked out only after a loss occurs. This distinction directly affects how much money the policyholder receives in a claim.

Valued policy

A valued policy states the agreed value of the insured subject matter on the face of the policy itself. This figure is fixed in advance, when the policy is taken, through a valuation clause agreed between the assured and the insurer. If a total loss occurs, the insurer pays that fixed amount, regardless of what the property might actually be worth at the time of loss.

This is one of the features that sets marine insurance apart from many other types of insurance. The General Insurance Council notes that the insured value is typically agreed in advance based on the CIF (cost, insurance, freight) value of the goods, often with an added margin of around ten percent to cover overheads and a reasonable element of profit. Because the value is settled beforehand, claims are simpler and faster to process, since there is no argument over how much the lost goods were worth.

Unvalued policy

An unvalued policy, sometimes called an open policy, does the opposite. It does not specify the value of the subject matter when the contract is made. As defined under Section 30 of the Act, an unvalued policy leaves the insurable value to be ascertained later, subject to the limit of the sum insured.

In practice, this means that if a loss occurs, the value of the goods must be proved and assessed before compensation is paid. The insurer then pays only the insurable value established through that process. This can make claims slower, because evidence of the actual value has to be produced and examined. However, it can be useful when the precise value of goods is genuinely difficult to fix at the outset.

Policies for regular shippers

The final policy type addresses a very practical problem. What happens when a merchant or company makes frequent shipments and does not want the hassle of arranging a separate policy every single time?

Floating policy

A floating policy is designed exactly for this situation. Under Section 31 of the Act, a floating policy describes the insurance in general terms and leaves the name of the ship and other particulars to be defined later by subsequent declaration. The merchant takes out a single policy for a round, lump-sum amount that represents the maximum cover available.

As each shipment is made, the trader declares its details to the insurer, usually by endorsement on the policy. Each declaration reduces the available sum insured, much like withdrawals draining a bank balance. The policy continues to cover shipments until the total declared value reaches the original sum insured, at which point the policy is exhausted and fully used up.

The advantage is obvious. Businesses involved in high-volume trade are spared from negotiating and arranging fresh insurance for every consignment. They get continuous protection under one arrangement while still keeping the insurer informed about each individual shipment. This saves both time and administrative effort, which is why floating policies are popular with regular exporters and importers.

Why these distinctions matter in practice

These categories are not just academic labels. They overlap and combine in real contracts. A single shipment might be insured under a voyage policy that is also a valued policy. A shipping company running regular routes might use a time policy that is also unvalued. A frequent exporter might rely on a floating policy that draws down with every consignment.

Choosing the wrong type can have real consequences. A business that ships goods every week but buys a fresh voyage policy each time wastes money and effort that a floating policy would save. A shipowner who takes a voyage policy but then changes the route risks having a legitimate-looking claim rejected. The reason marine insurance is studied so carefully is that the structure of the policy, not just the premium paid, determines whether a claim succeeds. As the legal framework around the measure of indemnity shows, whether a policy is valued or unvalued changes the exact calculation of how much is paid out, especially in cases of partial loss.

For students of trade and risk management, the key takeaway is this: marine insurance is flexible by design. The same fundamental promise to indemnify against loss at sea can be packaged in many ways, and matching the package to the shipping pattern is where good risk management begins.

What do you think? If you ran a small export business that shipped goods irregularly to different countries, would you choose a series of voyage policies or a single floating policy, and what trade-offs would shape your decision? And do you think the twelve-month limit on time policies still makes sense in an era of long, complex global supply chains?

References

PDF 📄

Marine Insurance: Types of Policies – Voyage, Time, Mixed, Valued, Unvalued, Floating

Table of Contents

What marine insurance actually means 🔗

Policies based on duration and route 🔗

Voyage policy 🔗

Time policy 🔗

Mixed policy 🔗

Policies based on how value is fixed 🔗

Valued policy 🔗

Unvalued policy 🔗

Policies for regular shippers 🔗

Floating policy 🔗

Why these distinctions matter in practice 🔗