Seaworthiness
Seaworthiness is the state of a ship being fit in all respects to encounter the ordinary perils of the voyage and to carry its cargo safely. It is a broad concept covering the vessel's hull and machinery, equipment, adequate and competent crew, sufficient bunkers and stores, and cargoworthiness (the holds/tanks being fit to receive and carry the particular cargo).
Seaworthiness is a fundamental legal duty in both carriage of goods and marine insurance. Under the Hague-Visby Rules, the carrier must exercise due diligence to make the ship seaworthy before and at the beginning of the voyage — a failure of which can strip the carrier of its liability defences in a cargo claim. In marine insurance, seaworthiness affects the validity of cover. The duty is not absolute (for the carrier it is one of due diligence, not a guarantee), but it is central: an unseaworthy ship that causes cargo loss exposes the carrier to liability. Seaworthiness underpins safety, cargo liability and insurance, making it one of the foundational concepts of maritime law.
Seaworthiness is the hinge of cargo liability — a carrier that fails its due-diligence duty to provide a fit ship can lose all its Hague-Visby defences when cargo is damaged. It also underpins insurance validity and, above all, safety. Few concepts in maritime law carry more weight, which is why it sits at the centre of carriage and insurance disputes.
What does seaworthiness cover?
The ship's hull and machinery, equipment, competent crew, adequate bunkers and stores, and cargoworthiness of the holds — fitness for the voyage and cargo.
Why does seaworthiness matter for cargo claims?
Under Hague-Visby the carrier must exercise due diligence to make the ship seaworthy; failing this can remove its liability defences.