USCG Exam Practice · Rule 25 — Sailing and Rowing Vessels (lights)
A sailing vessel underway optionally exhibits two all-round lights in a vertical line at or near the top of the mast. What is the correct color arrangement of these lights?
- AUpper green, lower red
- BUpper white, lower red
- CUpper red, lower green✓ correct
- DUpper red, lower white
Why C is correct
33 CFR §83.25(c) specifies that the optional masthead all-round lights for a sailing vessel underway shall be arranged with the upper light red and the lower light green. This is the reverse of the sidelight colors (red port, green starboard) and serves as a distinctive identification.
Cited:33 CFR §83.25
Drill more Rule 25 — Sailing and Rowing Vessels (lights) questions
Every CaptainsGround answer cites the rule it tests — verified, not guessed. Try a free 5-question drill, no sign-up.
More practice questions
- A vessel under oars that does not exhibit the lights prescribed for sailing vessels mus…
- What day shape is required to be exhibited by a vessel proceeding under sail when also …
- A sailing vessel of less than 7 meters in length is underway at night. It is not practi…
- A sailing vessel of 18 meters in length is underway at night. What is the minimum visib…
- A vessel under oars does NOT exhibit the lights prescribed for sailing vessels. What is…
- According to the Inland Navigation Rules, which of the following factors must ALL vesse…