What a Preferred Ship Mortgage Means for a Buyer
The reason your lender suddenly cares whether the boat is documented, explained without the admiralty law.
By Boatmere Brokerage Desk · Updated · 6 min read
Somewhere around a hundred thousand dollars, marine lenders stop being relaxed about paperwork. The boat you were going to register with the state now has to be documented with the Coast Guard, and nobody explains why.
The answer is that the lender wants a preferred ship mortgage, and it can only get one on a documented vessel.
What is a preferred ship mortgage?
A mortgage on a vessel, recorded federally, that carries a statutory priority and is enforceable in admiralty court.
Three properties make it attractive to a lender:
Priority. It ranks ahead of most claims recorded after it. There are exceptions that outrank it, notably crew wages and salvage, but against ordinary creditors it sits near the front of the queue.
Portability. It is recorded once, nationally. A state lien is perfected under one state's rules, and a boat that moves from Florida to Rhode Island to Maine raises questions about whether the security followed it. A documented vessel carries its record wherever it goes.
Enforceability. The lender can proceed against the vessel itself in federal court rather than only against you. In practice this makes recovery cleaner, which is precisely why they want it.
What it means for you
Mostly administrative, with three real effects.
You will pay for documentation. Filing fees themselves are a few hundred dollars; most buyers use a documentation service and end up between $500 and $900 all in, including the mortgage recording. It is a closing cost, so budget it.
Your boat needs a name and a hailing port, permanently marked. Documented vessels display the name and hailing port on the transom in letters at least four inches high, and the official number carved or permanently affixed inside the hull. That last one is a genuine requirement people forget until an inspection.
You will probably still register with your state. Documentation establishes ownership federally. Most states still want the boat registered to use their waters, and they still want their use tax. Documentation is not a tax strategy, whatever you read on a forum.
The renewal that catches people
Documentation renews annually. It used to be a paper reminder in the post and it is now easy to miss.
Let it lapse and you have a boat with an expired certificate, which is a problem when you try to sell, when your insurer asks, and occasionally when you are boarded. Reinstating is not difficult but it is another few weeks you did not plan for. The Coast Guard offers multi-year renewals now, which is worth taking.
Where it helps you rather than the lender
The abstract of title.
Because documented vessels have a federal record, you can order an abstract listing every recorded instrument against the hull: mortgages, ownership transfers, satisfactions. On a state-titled boat you are relying on a state database and the seller's honesty.
For a buyer, that abstract is one of the most useful documents in the process, and it exists because of the same system that gives your lender its mortgage. Order it early, and specifically check that any prior mortgage shows as satisfied.
An unsatisfied mortgage from two owners ago is not rare. It is usually an administrative oversight rather than fraud, and it will still stop your closing dead until somebody tracks down a bank that may since have been acquired twice.
Frequently asked questions
- What is a preferred ship mortgage?
- A lien on a federally documented vessel, recorded with the US Coast Guard, that gives the lender a high-priority claim enforceable in federal admiralty court. It ranks above most later claims and follows the vessel regardless of which state it is in.
- Why does my lender want the boat documented?
- Because a preferred ship mortgage is stronger security than a state-recorded lien. It has clear priority, it is recorded in one national registry, and it does not need re-perfecting when the boat moves between states. Many lenders require it above roughly $100,000.
- Who pays to document the vessel?
- The buyer, in practice. Filing fees are modest, a few hundred dollars, but most buyers use a documentation service which brings the total to roughly $500 to $900 including the initial certificate and the mortgage recording.
- Can a documented vessel still need state registration?
- Frequently yes. Documentation covers ownership at federal level; many states still require the boat to be registered for use in state waters and will collect their fee and any use tax regardless of documentation status.
