Sound signals
Duration and meaning of vessels' sound signals: manoeuvring signals, meeting and harbour signals, fog signals and distress signals, as well as the prescribed sound-signalling devices.
- 35 questions in this topic
- Topic 4 of 16 in the course: Swiss boat licence – theory for motorboat & sailing boat (A, D)
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From the key facts
- Short blast ≈ 1 s, long blast ≈ 4 s, pause ≈ 1 s, constant pitch; group of bell strokes ≈ 4 s – BSV art. 33
- 1 long = attention / I am maintaining my course; 1 short = starboard; 2 short = port; 3 short = engine going astern; 4 short = unable to manoeuvre; series of very short blasts = risk of collision – art. 34
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. 33, 34, 35, 39, 43, 45, 51, 52, 55a, 56, 58, 63, 64, 132; annex 3, annex 4, annex 15