USCG Exam PracticeRule 37 — Distress Signals
A vessel's master observes a high-intensity white light on a nearby vessel flashing at approximately 60 times per minute. Under 33 CFR §87.01, this signal indicates which of the following, and what obligation does 33 CFR §87.02 impose on other mariners regarding this signal type?
- A. It is a signal to attract attention under Rule 36; other vessels may use similar lights for the same purpose.
- ✓ It is an official distress signal; its use for any purpose other than indicating distress and need of assistance is prohibited.Correct
- C. It is an anchor light malfunction; no regulatory restriction applies to its use.
- D. It is an optional identity signal for pilot vessels; use is restricted to vessels on pilotage duty.
Why B is correct
33 CFR §87.01(p) designates a high-intensity white light flashing at regular intervals from 50 to 70 times per minute as an official distress signal. 33 CFR §87.02 prohibits use of any signal listed in §87.01 for any purpose other than indicating distress and need of assistance, and also prohibits use of signals that may be confused with them.