05/28/2026
Documentation vs. Title vs. Registration: What's What?
Coast Guard documentation and a state title are two ways of proving who owns a boat, so your boat has one or the other, never both. State registration is a separate thing entirely, and most states require it no matter which ownership documentation you choose.
The Three Terms, and the Job Each One Does
The fastest way to keep these terms straight is to notice that they answer two different questions. Two of the words are about who owns the boat. One is about where you’re allowed to use it.
Coast Guard documentation is a federal record of ownership. The Certificate of Documentation, issued by the US Coast Guard’s National Vessel Documentation Center, says who owns the boat and that it’s a US vessel. Think of it as ownership proof (or a title) at the national level.
A state title is a state record of ownership. Same job as documentation, just issued by your state. It proves who owns the boat, exactly the way a car title proves who owns your car.
State registration is not about ownership at all. Registration is a state’s permission to operate the boat on its waters, and it’s how the state collects its fees and taxes. It’s the annual sticker, much like the tags on your car’s license plate.
So documentation and a title do the same job in two different places: one federal, one state. Registration does a completely different job.
You Can’t Have Both Documentation and a Title
Because documentation and a title both prove ownership, you only need one. And in fact you can only have one. Federal law does not allow a state to issue a title on a boat that’s documented with the Coast Guard. The two systems don’t stack.
This is why you’ll sometimes hear that a boat has to be “deleted” from documentation before a state will title it. That’s not a quirk of a few states. It’s true everywhere. If a boat is federally documented and the new owner wants a state title instead, the boat first has to come off the Coast Guard’s books. It works the same way in reverse: to document a boat that currently holds a state title, you give up the title in the process.
Switching from one to the other is allowed and routine. You just can’t sit in both systems at the same time.
Deciding Between Documentation and a State Title
Before you weigh documentation against a title, check whether documentation is an option at all. Not every boat qualifies. To be eligible, a boat must be:
Wholly owned by US citizens. Every owner has to be a US citizen, whether native-born, naturalized, or a citizen of a US territory. If even one owner isn’t a US citizen, the boat can’t be documented for recreational use.
At least five net tons. Net tons measures interior volume, not weight. As a rule of thumb, most boats around 25 feet and longer meet it, though it depends on the boat’s design.
If your boat doesn’t clear both bars, the choice is made for you: a state title is your path.
Why Choose Documentation
If your boat qualifies, documentation is typically used in one of two situations:
You plan to cruise internationally. A Certificate of Documentation is recognized worldwide as evidence that your boat is a US vessel. It’s clean, federal proof of nationality and ownership, and many cruisers find it makes clearing into foreign ports a little smoother.
One thing to be clear about, because it’s widely misunderstood: no country requires US Coast Guard documentation. A state title plus your state registration satisfies foreign customs too. The Bahamas, for example, asks for proof of ownership and your registration, and a state title fills the “proof of ownership” requirement.
Your lender requires it. If you financed the boat, the bank may insist on documentation because it lets them record a preferred ship mortgage with the Coast Guard, giving them a stronger recorded claim. If your loan requires it, the decision is already made for you.
Some owners also simply like that a documented boat carries its name and hailing port instead of registration numbers on the bow. That’s a minor perk, not a real reason on its own, but it comes up.
Why Choose a State Title
A state title is the simpler path for a lot of boats, and one of its advantages gets overlooked.
A state title is generally a one-time thing. You title the boat, and you’re done with the title itself. States don’t make you renew the title year after year. Documentation is different: it has to be renewed to stay valid. So a state title means one thing to deal with each year.
To keep this from re-tangling the terms, be clear about what renews and what doesn’t:
The ownership record: a title generally never needs renewing. Documentation does, either annually or in a multi-year block.
Registration: renews on its own schedule regardless of which ownership path you picked.
So if your boat is staying in US waters and no lender is forcing the issue, that set-and-forget quality is a genuine reason some owners prefer a state title.
Dinghy
Whether your main boat is documented or state titled, you also need to title the dinghy. Saying it is “tender to” a documented boat does not exempt it from state titling and registration. And since the dinghy will not meet the size requirements for documentation, state titling is your only option.
State Registration
Whether your boat is documented or state-titled, most states still require you to register it.
Registration is tied to using the boat in a state, not to which ownership system you picked. A documented boat and a state-titled boat are usually treated the same way at registration time: both register, both pay the fees, both pay any taxes due. There’s just one visible difference:
A state-titled boat displays the state registration numbers on the bow, plus the validation sticker.
A documented boat displays only the sticker. Federal rules mean it doesn’t carry state numbers on the hull, but it still has to register and show the decal.
In other words, documentation generally doesn’t get you out of registering. It only changes how the registration shows up on the boat. A small number of states do exempt documented vessels from registration altogether, but that’s the exception. State laws change, and the details vary, so check the rules for the state where you’ll actually use the boat. Searching “[your state] boat registration” usually surfaces the official requirements fast.
Your dinghy will probably also have to be registered, although some states will exempt the dinghy if it does not have a motor. Check with your state.
Which State Do You Register In?
You register where the boat is used, not necessarily where you bought it or where you live.
Your ownership record, whether a title or documentation, is one record that follows the boat anywhere. Registration is different. It’s per-state and triggered by how much you use the boat in a given state’s waters. Most states use the idea of a state of principal use: the state whose waters your boat is on the most during the calendar year. That’s where you register.
This means a boat can be titled in one state and required to register in another, purely because of where it spends its time. Most states also allow a grace period for visiting boats, often 60 to 90 days, before they expect you to register locally. And yes, if you snowbird with an extended stay in both a “summer state” and a “winter state,” you could be required to register in both. Check state laws because every combination is different.
Credit: Carolyn Shearlock from theboatgalley
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