Checking a Captain's License Before You Hand Over the Keys
A captain's license is a document you can check yourself in about two minutes. Here's how, what the endorsements mean, and what no license will ever tell you.
A Coast Guard license is one of the few things in this business you can check yourself, from your kitchen table, before anyone steps aboard your boat. Most owners never do. They ask whether the captain is licensed, hear yes, and move on to dates.
Yes is a claim, not an answer. It takes about two minutes to check a captain's license properly. Here's how, what the words on the credential mean, and the things no license will ever tell you.
What a captain's license is
What most people call a captain's license is a Merchant Mariner Credential, issued by the Coast Guard's National Maritime Center. Getting one isn't a weekend course. Before it issues anything, the Coast Guard wants documented sea time, a passed drug test and a medical exam.
The credential is good for five years. The medical certificate that goes with it is a separate document, and the Coast Guard's verification checks the two separately. You want both current.
The number that matters
Every credential carries a Mariner Reference Number. It's the number the Coast Guard looks a mariner up by, which makes it the closest thing a captain has to a VIN.
A professional hands it over the first time you ask. They put it on insurance submissions all the time. Mine is 2913289, and it sits on my credentials page next to the form I send underwriters, because the whole point of the number is that you can check it.
Get the captain's full legal name with it. The name on the credential has to match the person who shows up at your dock.
Verify it yourself
The National Maritime Center runs a credential verification tool on its website. You enter the captain's last name and reference number, and it tells you whether the credential and the medical certificate are valid.
Checking a captain's license, start to finish.
Ask for the captain's full legal name and Mariner Reference Number, in writing.
Open the National Maritime Center's credential verification tool.
Enter the last name and reference number.
Confirm the credential and the medical certificate both come back valid.
Read the endorsements against your boat and your trip.
If a captain hesitates at step one, you don't need steps two through five.
Reading what's on it
A valid credential isn't the end of the check. What it's endorsed for is the part owners skip, and it's where the mismatches live. Read three things.
The grade
For the work my clients hire captains to do, you'll usually see one of two kinds of license. The first is OUPV, the one people call the six-pack. It covers uninspected passenger vessels under 100 gross register tons carrying six or fewer passengers. Plenty of capable captains hold one.
The second is a Master endorsement, which states a tonnage and a route. Mine are Master of up to 100 gross register tons on the Great Lakes and inland waters, and Master of up to 50 tons near coastal.
The tonnage
Gross register tons is the Coast Guard's measurement of a vessel's size, and the number on the license is the ceiling. For the 30- to 65-foot boats most of my clients own, a 100-ton license covers the boat with room to spare. If you run something bigger, read that number before you read anything else.
The route
This is the one that bites. The Coast Guard defines each route, and the definitions are specific:
Great Lakes: the lakes and their connecting and tributary waters.
Inland: navigable waters shoreward of the Coast Guard's boundary lines, not counting the Great Lakes.
Near coastal: ocean waters up to 200 miles offshore, or 100 miles on an OUPV license.
Oceans: the waters seaward of the boundary lines.
For Great Lakes owners, the route question usually shows up on the way south. The Intracoastal Waterway is inland water. An outside run down the Atlantic coast, or the open-water crossing at Florida's Big Bend, is ocean water. If your trip to Florida includes an outside leg, the credential needs near coastal on it. A Great Lakes and inland license, however good the captain, stops at the boundary line.
The extras
You may see additional endorsements. Assistance towing, which I carry, is the Coast Guard's endorsement for towing a disabled vessel for pay. It won't matter on most deliveries. It does tell you the captain passed a written exam or an approved course on towing safety, equipment and procedures, which counts for something the day a delivery comes across a boat in trouble.
What no license will tell you
A license tells you the Coast Guard checked a captain's paperwork, sea time and health. It doesn't tell you what they've run lately.
Ask how many hours they've put on boats like yours in the last season or two: same size, same propulsion, twin screws if you have them. Ask what water they actually work. A captain who has never run the Detroit River against its current, or Lake Erie in a west wind, is going to learn it on your boat. Local knowledge doesn't come printed on anything.
If you're hiring for coaching rather than a delivery, the license tells you nothing about whether the captain can teach. You learn that on the first phone call.
And none of it tells you whether your insurance carrier will accept that captain. That's a separate step, the rider, and I've written up what your carrier needs before a captain takes the helm. If your policy came with a requirement for hours with a captain, the sign-off letter at the end has to come from a captain your carrier accepts, which is its own process.
Red flags on the paperwork
Won't give you a reference number, or promises it later.
The name on the credential doesn't match the person or the company you're dealing with.
The credential or the medical certificate comes back expired.
The route or the tonnage doesn't cover your boat or your trip.
Can tell you they're licensed but can't tell you what the license says.
Suggests you skip the check because their own insurance covers it.
Most of these end the conversation on their own. The last one ends it faster.
Where this fits
The license is the first check, not the only one. The whole order, from the first call to the day your boat arrives, is in how to hire a captain to move your boat.
My reference number is on my credentials page. Check it. That's what it's there for. And if a delivery or a season of coaching is on your calendar, a quick call sorts out the rest.
