COLREGs · Rule 32
Sound Signal Definitions
TL;DR
Defines whistle, short blast (≈1 sec), and prolonged blast (4–6 sec). 'Whistle' includes any sound-signalling appliance capable of producing the prescribed blasts.
Authoritative source
- 33 CFR §83.32— verbatim Inland Rule text (US Code of Federal Regulations)
- International COLREGs Rule 32 verbatim text is published by the IMO. The Inland counterpart 33 CFR §83 chunk above mirrors the international wording almost verbatim.
Inland parallel
Inland Rule 32 — Sound Signal Definitions →More from Part D — Sound and Light Signals
Related drills
- Rule 33 — Equipment for Sound Signals
- Practise Rule 34 — Maneuvering and Warning Signals
- Practise Rule 35 — Sound Signals in Restricted Visibility
- Rule 36 — Signals to Attract Attention
Drill COLREGs Rule 32
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