Search public boat records by HIN. VesselBook records are not certification of legal ownership. Check title, liens and registration independently before purchasing.
A Hull Identification Number (HIN) is the 12-character code a builder assigns to a single hull. Every boat built in or imported into the United States on or after 1 November 1972 is required to carry one. It belongs to the hull itself, not to the owner: the boat can be sold, renamed, re-registered in another state, repowered or refitted, and the HIN stays the same. That is what makes it the one thread a permanent record can be hung on.
The HIN is moulded, stamped or riveted into the hull — it is not a sticker you can peel off. Look in these places, in this order:
If the transom HIN and the paperwork disagree, stop and resolve it before money changes hands. A mismatch is sometimes a clerical typo — and sometimes it is not.
In the current United States format, the 12 characters break into three parts:
Older and non-U.S. boats do not always fit this pattern. Boats built before 1 November 1972 were never required to carry a HIN at all, and are identified instead by a state registration number, a USCG documentation number, or the builder's own serial number.
The HIN is the cheapest check in a boat purchase and the one that has to come first: it confirms you are looking at the hull the paperwork describes. Read it off the transom yourself, photograph it, and compare it character by character with the registration, the title and the listing before you pay for a survey, a haul-out or a trip to see the boat.
Everything filed against a hull — survey summaries, verified work, ownership transfers, equipment upgrades, damage disclosures — is attached to its identity, so it survives a sale instead of leaving with the seller. Owners decide what is public: this page shows the public registry signals and the records an owner has individually marked public. Costs, private records, owner identity and the boat's name are never shown here.
No. Ownership is established by the state title and registration, or by U.S. Coast Guard documentation — never by a lookup. VesselBook shows whether an owner has claimed and verified this hull with us, which is a signal, not a legal title.
No. Outstanding loans, liens and title status live with the state titling agency, the USCG documentation record and lien search services. A lookup here does not stand in for that search.
No. Nothing about condition, value or seaworthiness can be read from an identity record. That is what a marine survey is for, and no lookup replaces one.
It is as complete as what has been filed. A hull shows the records its owners, surveyors and yards have put on file, plus public federal data where it exists. Nothing on file does not mean nothing happened — it means nothing was recorded here.
The lookup is free and needs no account. An account is only needed to claim a boat you own, add records to it, or share a full history report.