No boating license without adequate eyesight, because anyone who can’t reliably tell lights, buoys, and other vessels apart puts themselves and others at risk on the water. That’s why the eye test is one of the formal requirements for exam registration. This article explains exactly what’s tested, how the process works, and what you can do if your visual acuity is borderline.
Why an eye test is part of the boating license admission process
To register for the exam for the SBF Inland or SBF Coastal license, the examination board requires a medical certificate for boating license applicants. This form confirms that you’re physically and medically fit to safely operate a sports boat. Alongside general physical fitness, the certificate covers three areas: eyesight, color vision, and hearing. For a complete overview of all requirements, documents, and the registration process, see Boating License Requirements. This article focuses specifically on the eye test, the part that causes the most questions among applicants.
The reasoning is straightforward: on the water you often need to recognize other vessels’ lights, buoys, and sea marks at a distance and in changing light conditions. Insufficient visual acuity or a significantly impaired color vision can lead to dangerous misjudgments here, for example when distinguishing a red from a green fairway buoy light.
What exactly gets tested
The eye test for the boating license consists of two parts:
- Visual acuity: How sharply you see at various distances, with or without a visual aid.
- Color discrimination: Whether you can reliably tell colors apart, especially red and green.
Both values are entered by the doctor onto the official form. Hearing is usually checked in the same appointment as well, but that’s a separate examination step and not part of the eye test itself. The same principle applies here: if your hearing is only sufficient with a hearing aid, that’s noted on the certificate accordingly, a hearing aid is just as permitted as a visual aid.
The visual acuity requirement
For the boating license, your visual acuity must be at least 0.8, either in both eyes together or in the better eye. What matters is not whether you reach this value unaided: if you wear glasses or contact lenses in everyday life, the test counts with that visual aid in place. A visual aid is explicitly allowed for the boating license, you don’t need to reach the required value without glasses.
Important: if adequate visual acuity is only established with a visual aid, that’s noted accordingly on the medical certificate. In practice, this means you should generally wear glasses or contact lenses whenever you’re operating your sports boat, similar to the restriction many people know from a car driving license. So it’s a good idea to keep a spare pair of glasses or contact lenses on board in case you rely on your visual aid while underway.
Color vision and red-green color blindness
Besides visual acuity, the eye test also checks your color discrimination, usually with special test plates showing colored patterns or numbers. This matters because on the water you need to reliably distinguish red and green lights, as well as the correspondingly colored sea marks, as described in our articles on navigation lights and the lateral buoyage system.
Red-green color blindness doesn’t automatically disqualify you from getting the boating license. The examining doctor has a certain amount of discretion here and assesses case by case how pronounced the impairment actually is and whether it would endanger safe boat operation. In many cases of mild to moderate color vision deficiency, a corresponding restriction is noted on the certificate instead of denying fitness outright. If you’re unsure whether a known color vision deficiency might be relevant, it’s worth discussing it openly with the examining doctor before the official test is carried out.
Who can perform the eye test: optician or doctor
For the eye test itself, you don’t necessarily need an appointment with an ophthalmologist. The test can also be carried out by an optician, and many optician shops offer the eyesight and color vision test for the boating license free of charge or for a small fee. You then bring the result to your GP, who fills out and signs the official medical certificate. The complete certificate, which confirms not only your eyesight but also your general physical fitness and hearing, must be issued by a doctor, an optician alone cannot legally complete the form. A visit to your GP is enough, a specialist such as an ophthalmologist isn’t required.
How the eye test and medical certificate process works
The practical process is straightforward:
- Get the form: Download the medical certificate for boating license applicants from the DMYV or DSV and bring it printed to your appointment.
- Book an appointment: Either directly with your GP, or have the eye test done at an optician first and bring the result to the doctor afterward.
- Get examined: Visual acuity, color discrimination, and hearing are tested, bring your usual visual aid with you if you wear one.
- Have the form filled out and signed: The doctor enters the results and confirms your fitness.
- Attach the certificate to your exam registration: Submit the completed certificate together with the rest of your documents to the examination board, as described in How to register for the SBF exam.
Don’t expect the appointment to take long, the examination itself usually takes only a few minutes.
Cost and validity of the medical certificate
The cost of the medical certificate is usually between €30 and €65, depending on the doctor’s practice. If you have the eye test done for free at an optician beforehand, you may reduce the time needed at the doctor’s office, but the overall cost still depends on the individual practice. It’s best to ask about the price by phone beforehand.
The medical certificate is valid for 12 months from the date it was issued. So don’t have it issued too early, or it may expire before you actually sit the exam, forcing you to repeat the appointment. A good time to get it is around two to three months before your planned exam date. If you take both the SBF Inland and SBF Coastal exams within this validity period, you can use the same certificate for both registrations.
What happens if your visual acuity isn’t sufficient?
If you don’t reach the required visual acuity even with a visual aid, the doctor can restrict or, in rare, very pronounced cases, refuse fitness on a case-by-case basis. If you have known eyesight issues, it’s worth talking to your ophthalmologist before your official appointment, they can assess whether your current glasses or new contact lenses would reach the required value. Often, an updated visual aid alone is enough to reliably meet the requirement.
Important to know: a negative result on the eye test doesn’t necessarily mean the end of your plans. In the vast majority of cases, visual acuity can easily be brought up to the required value with suitable glasses or contact lenses, and you’ll receive your certificate with the note “with visual aid” issued normally.
Do I need a new eye test for a retake exam?
If you don’t pass the theory or practical exam on your first attempt, you generally don’t need to submit a new medical certificate as long as the original one is still valid within the 12-month period. The certificate is tied to your admission to the exam, not to a single exam date. If the validity expires before you sit the retake, however, you’ll need a new certificate with a current eye test. So keep an eye on the issue date, especially if several months lie between registration and a retake date.
Practical tips for your eye test appointment
- Bring your visual aid: If you wear glasses or contact lenses, be sure to bring them to the appointment, the test is done with your usual correction.
- Get current values checked: If your last vision measurement was a while ago, have it updated beforehand at an optician or ophthalmologist.
- Plan ahead: Since the certificate is only valid for 12 months, schedule your appointment so it’s neither too early nor too late before your exam registration.
- Be open about known impairments: Mention a known color vision deficiency or eyesight issue openly, so the doctor can address it specifically instead of it becoming a surprise during the actual test.
- Keep the original and a copy: Keep a copy of the completed certificate in case the examination board has any follow-up questions.
- Plan a spare visual aid for the exam and for boating: If a visual aid is noted on your certificate, always keep a spare pair of glasses or contact lenses handy, both on exam day and later when boating.
Eyesight and the SBF exam
The eye test itself isn’t an exam question in the theory portion, it’s a formal admission requirement. Still, good eyesight is closely linked to the exam material: if you can’t reliably tell lights, buoys, and signals apart, you’ll also find it harder to connect the corresponding questions from the official question catalog with your own perception. With the Boatpass app, you can practice the official exam questions on navigation lights, buoyage, and signals in exam mode and immediately see where you still have gaps in your knowledge, independent of the eye test but with the same goal: staying safe on the water.
Conclusion
The eye test for the German boating license is straightforward but mandatory: you need a visual acuity of at least 0.8, with or without a visual aid, and adequate color discrimination. An optician can carry out the eye test, but the official medical certificate must be issued by a doctor, a visit to your GP is enough. Anyone who plans the appointment in good time and speaks openly with the doctor about known impairments can quickly get this part of the admission requirements out of the way and focus fully on preparing for the exam content.