Can you get a captain's license with a DUI?

This is one of the most common and most anxiety-inducing questions people ask before applying, and course sellers tend to skip it because the honest answer does not help sell a course. So here is the neutral version, framed as the public rule. This guide is not legal advice, and the National Maritime Center (NMC) makes the final determination on every application. If a conviction is affecting your livelihood, talk to a maritime attorney.

Can a DUI disqualify you from a captain’s license?

A single driving-under-the-influence (DUI) conviction rarely disqualifies you outright. What it does is move your application from an automatic approval into a case-by-case review by the NMC’s evaluators, who weigh how recent the conviction was, how many you have, and your record as a whole. Many mariners with a DUI in their past hold a Merchant Mariner Credential (MMC) today.

The Coast Guard’s concern is a specific one: it credentials people to operate vessels carrying passengers, so any alcohol- or drug-related conviction is relevant to whether you can be trusted at the helm. A DUI is not the same as being permanently barred, but it is not ignored either.

How the assessment period works

The NMC uses assessment periods, published in the table at 46 Code of Federal Regulations (CFR) 10.211, which set a recommended waiting time after a conviction before a credential is normally granted. The clock runs from the completion of the sentence, including probation and any required program, not from the date of arrest.

The core logic is proportional:

• The more recent the conviction, the longer the wait. A DUI from ten years ago carries far less weight than one from last year.
• The waiting period depends on the offense category. Alcohol- and dangerous-drug-related convictions have their own assessment periods, and drug convictions are generally treated more severely than a single alcohol DUI.
• Multiple convictions extend the review. A pattern is treated differently from a one-time mistake.

Even inside a nominal waiting period, the NMC can grant a credential earlier if you show evidence of rehabilitation, or it can ask for more before deciding. This is why the outcome is a review, not a yes-or-no lookup.

You must disclose it: the CG-719C

Every applicant completes Form CG-719C, the conviction disclosure, and a DUI must be listed. This is the part people get wrong in a way that genuinely hurts them: failing to disclose a conviction is treated as more serious than the conviction itself. A DUI you disclose is a reviewable item; a DUI the NMC discovers that you concealed reads as dishonesty and can sink an application that would otherwise have been approved.

The CG-719 forms walkthrough covers the CG-719C field by field. Disclose everything, attach the court disposition documents, and let the process work.

What helps your case

If you have a DUI in your record, the following genuinely improve a review:

• Complete court documentation: the disposition showing the charge, the outcome, and that the sentence and any probation are finished.
• Evidence of time and stability: a clean record since, and the time gap the assessment period contemplates.
• Proof of rehabilitation where relevant: completion of any required alcohol program.
• Honesty everywhere: the CG-719C, any narrative you attach, and any question the evaluator asks.

What this means for your timeline

A conviction on file usually means your application will not sail straight through. Budget for a longer evaluation, because a case-by-case review takes more of the NMC’s attention than a clean file, and the agency is already working through a backlog (see the dated processing tracker). If you are early in the process, it is worth confirming your sea time and gathering your court records at the same time so the disclosure package is complete on first submission and does not bounce back for missing documents.

For the broader picture on how the NMC weighs any conviction, not just a DUI, see captain’s license eligibility with a record.

Sources: 46 CFR 10.211 (conviction assessment periods and tables) via ecfr.gov, and the public National Maritime Center application guidance and CG-719C form (dco.uscg.mil/nmc), verified 2026-07-22. This guide describes the public rule and is not legal advice. Assessment periods are recommendations the NMC applies case by case; the National Maritime Center makes the final determination on every application, and an attorney can advise on your specific record.