Ship registration

Admiralty law
History
Code of Hammurabi Corpus Juris Civilis Digesta Ordinamenta et consuetudo maris Amalfian Laws Hanseatic League
Features
Fishing Illegal Fisheries law Maritime transport Shipping/Ferry Cargo Freight Shipbuilding Merchant marine Cargo ship Passenger ship Mortgage Registration Marine insurance Act of God Cargo Collision General average Seaworthiness Total loss Maritime security Letter of marque Drugs Piracy Pollution Smuggling Wartime prizes
Contract of carriage/Charterparty
Affreightment Agency Barratry Bill of lading Brokerage Chartering Consignment Demurrage Force majeure Invoice Commercial Pro forma Laytime Lien Maritime Manifest Packing list Proof of delivery Salvage Law Terms International Waybill
Parties
Agent Factor Freight forwarder Captain (Master) The captain goes down with the ship Carrier Charterer Freight company Manager Consignee Consignor Principal Owner Seaman Mutiny Stevedore
Judiciaries
Admiralty court Vice admiralty court
International conventions
Hague-Visby Rules Hamburg Rules Rotterdam Rules Maritime Labour Convention International Convention on Salvage United Nations Convention on the Law of the Sea (UNCLOS) International piracy law SOLAS Convention MARPOL Convention Ballast Water Management Convention Anti-fouling Convention International Convention on Load Lines International Regulations for Preventing Collisions at Sea SAR Convention Athens Convention
International organizations
International Maritime Organization Comité Maritime International London Maritime Arbitrators Association
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Ship registration is the process by which a ship is documented and given the nationality of the country to which the ship has been documented. The nationality allows a ship to travel internationally as it is proof of ownership of the vessel.^[1]

International law requires that every ship be registered in a country, called its flag state.^[2] A ship is subject to the law of its flag state.^[1] It is usual to say that the ship sails under the flag of the country of registration.

A ship's flag state exercises regulatory control over the vessel and is required to inspect it regularly, certify the ship's equipment and crew, and issue safety and pollution prevention documents. The organization which actually registers the ship is known as its registry. Registries may be governmental or private agencies. In some cases, such as the United States' Alternative Compliance Program, the registry can assign a third party to administer inspections.^[3]

A register that is open only to ships of its own nation is known as a traditional or national register. Registers that are open to foreign-owned ships are known as open registries and are sometimes called flags of convenience.