Inland · Rule 27
Vessels Not Under Command or Restricted in Their Ability to Maneuver
TL;DR
NUC: two all-round red in a vertical line + two balls by day. RAM: red-white-red vertical + ball-diamond-ball by day. Mineclearing, dredging, divers — each has a distinct light/shape combination.
Why it shows up on the exam
Rule 27 is the rule with the most distinct shape combinations in the entire book.
Authoritative source
International parallel
COLREGs Rule 27 — Vessels Not Under Command or Restricted in Their Ability to Maneuver →More from Part C — Lights and Shapes
Related drills
- Rule 20 — Application (Lights and Shapes)
- Rule 21 — Definitions (Lights)
- Rule 22 — Visibility of Lights
- Practise Rule 23 — Power-driven Vessel Underway
Drill Inland Rule 27
Sign in to drill citation-backed questions on this rule with immediate feedback and the source chunk in a popover.