USCG Exam Practice · Rule 27 — NUC and RAM (lights)
A floating dredge pipeline that crosses a navigable channel must display yellow flashing lights at night. Which of the following correctly states the maximum spacing of those lights within the navigable channel?
- ANot more than 50 meters apart
- BNot more than 25 meters apart
- CNot more than 10 meters apart✓ correct
- DNot more than 5 meters apart
Why C is correct
33 CFR §83.27(d)(iv)(1)(F) states that where the pipeline crosses a navigable channel, the yellow flashing lights must be not more than 10 meters apart. Where the pipeline does not cross a navigable channel, the lights need only be sufficient in number to clearly show the pipeline's length and course.
Cited:33 CFR §83.27
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