Lights & Shapes
COLREG Part C (Rules 20-31) defines the lights shown at night and the day shapes hoisted by different vessel types — power-driven vessels, sailing vessels, vessels not under command, restricted in ability to manoeuvre, fishing, pilot, anchored and aground.
⚡Lights & Shapes — Cheat Sheet
Every variant from Rules 23–30 in one place. Each row shows the lights as seen from port, starboard, ahead, and astern, plus the day shape — designed for fast revision before an exam.
- 20Application (Lights)
- 21Definitions (Lights)
- 22Visibility of Lights
- 23Power-driven Vessels Underway3D
- 24Towing and Pushing3D
- 25Sailing Vessels Underway and Vessels Under Oars3D
- 26Fishing Vessels3D
- 27Vessels Not Under Command or Restricted in Ability to Manoeuvre3D
- 28Vessels Constrained by Their Draught3D
- 29Pilot Vessels3D
- 30Anchored Vessels and Vessels Aground3D
- 31Seaplanes3D