SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/boat-anchor-light-all-round-white

A boat under 50 meters anchored at night may show what single light?

One all-round white light where it can best be seen.

  1. A flashing red light
  2. Green and red sidelights
  3. An all-round white light ✔

Why: Inland Rule 30 lets a vessel under 50 meters at anchor show one all-round white light where it can best be seen. That white light, visible from every direction, tells others you're anchored.

Huh, didn't know that: In a Coast Guard designated special anchorage area, boats under 20 meters don't need an anchor light.

The dad joke
What has a bed but never sleeps? A river.
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Sources

  1. 33 CFR 83.30 Vessels anchored, aground and moored barges, Inland Rule 30 (eCFR) https://www.ecfr.gov/current/title-33/section-83.30
  2. 33 CFR 83.30 Vessels anchored, aground and moored barges, Inland Rule 30 (eCFR) https://www.ecfr.gov/current/title-33/section-83.30

Test yourself in the game

Boating & WaterWhen must recreational boats show their navigation lights?Boating & WaterAt night you see only another boat's white sternlight, no red or green. What situation is this?Boating & WaterA sailboat moving under sail alone at night shows which lights?

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