Keelwake Knowledge
Sailing knowledge. Clearly sourced.
Plain answers on the SKS, nautical miles and logbooks. Every central claim links to its official source; contradictions and grey areas remain visible.
The most important starting point
300 nautical miles. What is actually required.
Admission to the practical SKS (Sportküstenschifferschein) examination is clearly regulated – except at one decisive point, where the guideline and the application form do not say the same thing.
300 nautical miles for SKS admission
What is officially required, when the proof has to be on file, and why miles sailed before the SBF See (Sportbootführerschein See) deserve to be clarified in writing.
Read the articleFrom the mile to the proof.
Six focused answers instead of one endless guide. Every article separates the official requirements, everyday practice and the open questions.
How do you count nautical miles correctly?
Course over ground, tacks or harbour to harbour — what the guidelines lay down and what they leave open.
Read the answerWhich miles really count?
Lake Constance, the IJsselmeer, dinghies, charter trips: the conditions and their grey areas.
Read the answerThe mileage certificate (Seemeilenbestätigung)
Who may sign it, what belongs on it and what is wrongly claimed in forums.
Read the answerTheory first, miles later
Why you do not have to wait until the 300 miles are complete before you start studying.
Read the answerLogbook obligations for recreational craft
Which record-keeping duties can apply and why blanket answers fall short.
Read the answer