USCG Documented Vessels: Federal Documentation vs State Title
6 min read · Updated August 2026
A USCG documented vessel is a boat registered with the federal government through the Coast Guard's National Vessel Documentation Center rather than titled by a state DMV. Documentation is authorized by 46 USC Chapter 121 and administered under 46 CFR Part 67. To qualify, a vessel must measure at least 5 net tons and be wholly owned by a US citizen or a qualifying US business entity.
For buyers, the distinction matters for one practical reason: documented vessels carry their ownership and lien history in a completely different filing system than state-titled boats. If you check only the state records, you can miss a federal mortgage that stays attached to the hull after you buy it.
“A preferred ship mortgage follows the hull, not the owner. The lender can pursue the vessel after the sale even if you paid the seller in full.”
Which boats can be federally documented
Documentation is not available to every vessel, and it is not automatic. Three requirements gate eligibility under 46 CFR 67.7 and 46 USC 12103:
- At least 5 net tons. Net tonnage is a volume measurement of enclosed internal space, not a weight. As a rough guide, most monohulls roughly 25 feet and longer clear the threshold, while many open runabouts and every personal watercraft fall short no matter how heavy they are.
- US citizen ownership. The vessel must be wholly owned by a US citizen, a partnership of citizens, or a corporation or LLC that meets the citizenship tests in 46 CFR 67.30 through 67.39. A single foreign co-owner disqualifies the hull.
- A valid endorsement. Every certificate carries at least one trade endorsement that defines the legal use of the boat.
The endorsement is worth reading closely on a used purchase. A boat documented for recreational use cannot legally be chartered for hire, and a foreign-built yacht holding only a registry endorsement cannot be moved into coastwise trade later without a waiver.
Federal documentation vs state title: the differences that matter
Both systems prove ownership. They differ in who keeps the record, how liens attach, and what markings the boat must display.
One common misconception: documentation does not exempt a boat from state law. Most coastal states still require a documented vessel kept in their waters to be registered with the state and to pay use tax, even though the state will not issue a title for it. Registration proves the boat is permitted to operate in those waters; it is not proof of ownership, and on a documented vessel it never will be.
Why documented vessels carry a different lien risk
On a state-titled boat, the lienholder is normally printed on the title itself, so a buyer holding the physical document can see the encumbrance. Federal documentation works differently, and the gap catches people out.
- Preferred ship mortgages (46 USC 31322) are recorded at the NVDC, not on the certificate the seller hands you. The Certificate of Documentation can look pristine while an unsatisfied mortgage sits in the federal record.
- Maritime liens (46 USC 31342) can arise with no filing whatsoever. A yard that performed repairs, a marina owed dockage, a fuel supplier, or a salvor can hold a claim against the hull that appears in no database until they act on it.
- The claim follows the boat. These are claims in rem, meaning they run against the vessel itself. A federal court can arrest the hull in your possession over a debt the previous owner incurred.
- Priority favors the lender. A properly recorded preferred mortgage outranks most claims that arise after it, so a later buyer paying cash does not clear the earlier debt.
The practical defense is layered: pull the abstract of title from the NVDC, require a signed affidavit from the seller stating there are no unrecorded liens, and run the HIN through a full vessel history check for anything the federal file will not show. On six-figure vessels, most buyers also use a marine escrow agent who will not release funds until the mortgage satisfaction is recorded.
How to check a documented vessel before you buy
Confirm the documentation is current
A Certificate of Documentation must be renewed with the National Vessel Documentation Center, and owners can now elect multi-year renewal periods of up to five years. Ask for the current certificate and check the expiration date, the official number, the vessel name, and the hailing port. If documentation has lapsed, the vessel may have been deleted from the federal registry, which complicates both financing and transfer.
Match the official number and the HIN
Documented vessels carry two identifiers. The Coast Guard Official Number is welded, carved, or otherwise permanently marked on a structural part of the interior hull (46 CFR 67.121). The HIN is stamped on the starboard side of the transom (33 CFR 181.29). Both must match the paperwork. A vessel whose interior official number has been ground off or replaced with a screwed-on plate deserves immediate scrutiny.
Order an abstract of title
The abstract is the federal equivalent of a title search. It lists every recorded bill of sale, preferred ship mortgage, notice of claim of lien, and satisfaction of mortgage filed against that official number, in order. Request it directly from the National Vessel Documentation Center in Falling Waters, West Virginia. Read it for open mortgages with no matching satisfaction, since that is the single most common way buyers inherit someone else's debt.
Run the HIN through a vessel history check
The abstract shows federal paperwork only. It will not show a salvage brand applied by a state, a Coast Guard casualty investigation, or a theft report. Enter the HIN at HullTrace for a free lookup, then pull the full report ($15) to cross-reference state title records, USCG accident data, stolen vessel status, and recall notices against the federal chain of title.
Verify state obligations before closing
Federal documentation replaces a state title in most states, but it rarely replaces state registration, and it never replaces sales or use tax. Florida, California, and Texas all require documented vessels kept in state waters to register with the state agency and display a decal. Confirm the seller is current, because unpaid state fees and taxes can follow the vessel into your name.
What happens to documentation when the boat is sold
Documentation does not transfer with the hull the way a state title does. The certificate is issued to an owner, so a sale ends it:
- The seller signs a bill of sale (Coast Guard form CG-1340 is the standard instrument) and the buyer files for initial documentation in their own name.
- The buyer must independently satisfy the citizenship and tonnage requirements. A foreign buyer cannot take a documented vessel with its documentation intact; the hull is deleted from the registry instead.
- If the new owner would rather hold a state title, they apply for deletion of documentation, then present the deletion letter and bill of sale to the state agency.
- Any recorded mortgage should be satisfied and the satisfaction recorded at the NVDC as part of closing. Do not accept a payoff letter alone.
The gap between the seller's deletion and the buyer's new certificate is where fraud tends to live. Verify the current owner named on the certificate is the person actually signing, and that the HIN on the transom matches every document in the stack.
An NVDC abstract covers federal filings against the official number. It will not surface a state salvage brand, a Coast Guard casualty investigation, an NCIC theft report, or an open recall. The free HIN lookup at HullTrace confirms the hull identity in seconds, and the $15 full report adds state title records, accident data, stolen vessel status, and recalls alongside the federal picture.
Frequently asked questions
What is a USCG documented vessel?
It is a boat registered federally through the Coast Guard National Vessel Documentation Center instead of being titled by a state. Documentation is governed by 46 USC Chapter 121 and 46 CFR Part 67, and requires at least 5 net tons of measured volume plus wholly US citizen ownership.
Does a documented vessel still have a HIN?
Yes. The HIN requirement under 33 CFR Part 181 applies to the boat as manufactured, so every US recreational hull built after November 1, 1972 has one regardless of registration path. Documented vessels additionally carry a Coast Guard Official Number marked in three-inch block characters on an interior structural part under 46 CFR 67.121.
Do I still have to register a documented boat with my state?
In most states, yes. Federal documentation typically replaces the state title, not the state registration or the use tax. Florida, California, Texas, and many other states require documented vessels kept in their waters to register and display a decal. Check the specific agency before assuming the seller is current.
How do I check for liens on a documented boat?
Order an Abstract of Title from the National Vessel Documentation Center for that official number. It lists recorded bills of sale, preferred ship mortgages, notices of claim of lien, and satisfactions. Because maritime liens under 46 USC 31342 can exist with no filing, add a seller lien affidavit and a full HIN history report.
Can documentation be transferred from the seller to me?
No. The Certificate of Documentation belongs to the current owner. On a sale, the buyer files a new initial documentation application supported by the bill of sale, or applies for deletion if they intend to title the boat with a state instead.
Is a documented boat harder to sell?
Not harder, but slower to close correctly. Buyers should expect to wait on an NVDC abstract and on recording of the mortgage satisfaction. Sellers who push for a same-day cash close on a documented vessel without producing a current abstract are asking you to skip the one check that protects you.
Documented or state titled, the HIN tells the rest of the story. Run a free lookup.