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In the U.S. system, red channel markers carry what kind of numbers?

Even numbers. Green ones are odd.

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  1. Even numbers ✔
  2. Odd numbers
  3. No numbers

Why: 33 CFR 62.43 says solid red aids carry even numbers and solid green aids carry odd numbers. The numbers increase as you head in from sea.

Huh, didn't know that: Red even and green odd numbering is the same in IALA Regions A and B, even though the colors swap sides.

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References

Answer: Even numbers. 33 CFR 62.43 says solid red aids carry even numbers and solid green aids carry odd numbers. The numbers increase as you head in from sea.

  1. 33 CFR Part 62, United States Aids to Navigation System www.ecfr.gov/current/title-33/chapter-I/subchapter-C/part-62
    red aids bearing even numbers and green aids bearing odd numbers
    Checked 2026-10-09.
  2. 33 CFR Part 62, United States Aids to Navigation System www.ecfr.gov/current/title-33/chapter-I/subchapter-C/part-62
    Buoys are not numbered.
    Checked 2026-10-09.
  3. 33 CFR Part 62, United States Aids to Navigation System www.ecfr.gov/current/title-33/chapter-I/subchapter-C/part-62
    Numbers on beacons do not have odd/even lateral significance but, rather, indicate mileage from a fixed point
    Checked 2026-10-09.

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Boating & WaterIn U.S. waters, 'red right returning' means keep red markers where when coming in from sea?Boating & WaterA red, cone-shaped buoy with a pointed top is called what?Boating & WaterGreen, flat-topped, cylinder-shaped buoys are called what?

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