Definition:Time policy
🕐 Time policy is a type of marine insurance contract that provides coverage for a specified period — typically twelve months — rather than for a particular voyage or transit. Under the UK Marine Insurance Act 1906 (Section 25), a time policy is defined as one where the insurance is for a definite period, and this structure is widely used across global hull and machinery markets, from London and the Nordic Plan to markets in Singapore, Hong Kong, and Tokyo. It stands in contrast to the voyage policy, which attaches to a single journey between named points.
📋 Coverage under a time policy begins and ends at specified dates and times, regardless of where the vessel happens to be when the policy incepts or expires. Underwriters assess the risk based on the vessel's trading patterns, classification status, flag state, and management quality over the policy period. Most ocean-going hull and machinery insurance, as well as protection and indemnity cover arranged through P&I clubs, operates on a time basis aligned to annual renewal cycles — traditionally February 20 for London hull business, a date inherited from historical market practice. If a vessel is at sea when the policy expires, a held-covered or continuation clause typically extends coverage until arrival at the next port. Premium is calculated for the full period and may be subject to adjustment based on laid-up returns or changes in trading area.
🌍 The dominance of the time policy in hull insurance reflects the practical reality that modern commercial shipping involves continuous, unpredictable itineraries rather than fixed point-to-point voyages. Shipowners need seamless protection throughout the year as vessels trade globally, and time policies deliver that continuity. For insurers, the annual structure supports portfolio management and aligns with reinsurance treaties that typically operate on a calendar-year or underwriting-year basis. The time policy framework also facilitates the inclusion of navigational warranties, trading limits, and premium adjustments that respond to how the vessel is actually used during the coverage period, giving underwriters a flexible tool for risk management.
Related concepts: