Small vessel rules, International and Inland
Vessels 12 to under 20 meters
May skip the anchor and aground bell signals, but then must make some other efficient sound signal.
Who sounds it
Vessel of 12 meters or more but less than 20 meters.
How it's sounded
No fixed pattern. Any efficient sound signal.
At intervals of not more than 2 minutes.
A short blast is about 1 second. A prolonged blast is 4 to 6 seconds. Clips use 1 and 5 seconds.
Worth remembering
This relief covers only the bell signals in (g) and (h). Whistle signals still apply.
More in small vessel rules
Study more
See every sound signal, try the free Rules of the Road practice test, or read who gives way, and how Inland differs.
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