USCG Exam Practice · GMDSS and VHF distress procedures
Which of the following is a recognized distress signal under 33 CFR §87.01?
- AA white parachute flare fired at intervals of one minute
- BA high-intensity white light flashing at 50 to 70 times per minute✓ correct
- CA continuous blast on an air horn lasting two minutes
- DWaving a white flag slowly from side to side
Why B is correct
33 CFR §87.01(p) specifically lists a high-intensity white light flashing at regular intervals from 50 to 70 times per minute as a recognized distress signal. The other options are not listed as distress signals in §87.01.
Cited:33 CFR §87.01
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