Nautical glossary
Navigation, COLREGs, weather, seamanship and radio – explained in clear, plain language.
Exam trainer
Study on course.
Test with confidence.
No aimless clicking through questions. Keelwake knows what you've mastered, what's shaky and what needs review right now.
285official SBF See questions
✓Your pacewith five learning boxes
585 questionsSBF Binnen and See included
5 learning boxesbased on the Leitner system
True simulationtiming, structure and scoring
Official content
The official material. Clearly presented.
SBF Binnen and SBF See – the German boating licenses for inland and coastal waters – are fully included, with the official question catalogs and their accompanying illustrations. Additional licenses unlock only if and when you need them.
- SBF Binnen and SBF See fully included
- SKS, the German coastal skipper license, unlockable with open-ended questions and chart work
- Multiple choice and open answers – matched to your license
Spaced repetition
Review before knowledge fades.
Depending on your answer, every question moves through five learning boxes. Solid knowledge steps into the background. Shaky topics resurface exactly when you'd otherwise forget them.
- Work through topics until you've mastered them
- Review only what's due each day
- Flashcards for your personal weak spots
Real-world practice
Train like it's exam day.
Keelwake draws a fresh exam sheet with the prescribed question mix for your license. The clock keeps running even if you briefly leave the app – and in the end, the official scoring key decides.
- Prescribed question mix and time limit per license
- Scoring with the respective passing thresholds
- History of your exam results
More than answers
Nautical knowledge that lasts.
SKS chart work
Ten task sheets with 177 individual navigation steps.
Honest statistics
Accuracy, streak, due questions and weak areas at a glance.
