Nautical glossary
Navigation, COLREGs, weather, seamanship and radio – explained in clear, plain language.
Exam trainer
Boating exam trainer for SBF, SKS and FKN
Study on course. Test with confidence.
Official questions, systematic reviews and realistic exam simulations: Keelwake shows what you have mastered 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 are free. SKS costs 6,99 € once and FKN 3,99 € once. SRC, UBI, LRC, BSP A/D and SSS/SHS are currently not available in the trainer. No subscription. Exam format and learning mode follow the individual certificate.
- SBF Binnen and See included; SKS and FKN available as one-off purchases
- SKS with open questions and chart work
- Multiple choice and open answers matched to the certificate
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.
