USCG Exam PracticeRule 32 — Sound Signal Definitions
Under the Inland Navigation Rules, a vessel at anchor in restricted visibility sounds a rapid bell ring for about 5 seconds at intervals of not more than 1 minute. In addition, that vessel MAY optionally sound which whistle signal to warn an approaching vessel?
- A. One prolonged blast
- ✓ One short blast, one prolonged blast, and one short blastCorrect
- C. Five short and rapid blasts
- D. One prolonged blast followed by two short blasts
Why B is correct
33 CFR §83.35(g) states that a vessel at anchor may in addition sound three blasts in succession — one short, one prolonged, and one short — to warn an approaching vessel. This optional signal supplements the mandatory bell signal.
Cited:33 CFR §83.35