Cab24 Akademie

Navigation signs, boards, buoys, storm warnings

The navigation signs under Swiss Inland Navigation Ordinance (BSV) annex 4 prohibit, require, restrict, recommend or give information – they apply in addition to the traffic rules. In addition there are yellow spherical buoys for closed areas and sports areas, red cylinders and green cones for navigation channels, cone markers for shoals and the orange storm warning lights.

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From the key facts

  • Prohibitory signs A: white board, red border + red diagonal bar (A.1 = red-white-red or two lights one above the other: no passage); mandatory signs B and restrictions C: red border without bar; information signs E: blue with white symbol (E.1 green-white-green) – BSV art. 36, annex 4
  • Yellow spherical buoys = closed water area (possibly + A.1); with A.2/A.3/A.4 closed only to these types of vessel; with E.5 on the shore = water-skiing/wakesurfing area or take-off lane – art. 37 para. 1–3

All key facts, the questions with explanations and the exam simulation are part of the course.

Legal references for this topic

The questions in this topic are based on these provisions:

  • BSV art. 2, 9, 32, 36, 37, 38, 39, 40, 53, 54, 58, 69, 76; annex 4

Ready to learn?

Theory for the Swiss boat licence cat. A (motorboat) and cat. D (sailing boat): lights, sound signals, signs, right of way, seamanship – with one or two correct answers, as in the exam.

CHF 9.90 one-time Buy course