Page 13 - Lewis

12 Light Regulations

International (72 Colregs) and Inland Rules
Range and Positioning Requirements

REF 1 Navigational Light Regulations REF 1
POWER DRIVEN VESSELS UNDER WAY
LIGHT REGULATIONS Required Light Vessels under 12 meters Vessels 12 meters to under

Minimum Visibility
20 meters in length
in length
2 miles
Side
1 mile
2 miles
Masthead
2 miles
Stern or All-Round
2 miles
SAILING VESSELS UNDER WAY 3 miles

Required Light Minimum Visibility
Vessels under 12 meters Vessels 12 meters to under
in length 20 meters in length
Side 1 mile 2 miles
Stern 2 miles 2 miles
Red, Green, 1 mile 2 miles
Tri-Color:
& White 2 miles 2 miles
VESSEL UNDER SAIL & POWER OR SAILING VESSEL UNDER POWER ALONE

Required Light Minimum Visibility
Vessels under 12 meters Vessels 12 meters to under
in length 20 meters in length
Side 1 mile 2 miles
Masthead 2 miles 3 miles
Stern or All-Round 2 miles 2 miles
LIGHTS AND SHAPES – 72 COLREGS Arc Arc
This section displays graphically some of the more common lights and Light (Degrees) (Points)
shapes required by the 72 COLREGS. It is by no means a complete display Masthead 225° 20 pts
and should not be regarded as such. The 72 COLREGS themselves remain
the authoritative source for the positioning and technical details of the
required lights and shapes. These illustrations are designed to aid the read-
er in recognizing and identifying the more commonly encountered situa-
tions on the high seas. Side 112.5° 10 pts
Red Green
The lights in the following illustrations are represented by portions of a Left Right
"disc". A top view of the arc of visibility for the various lights represented is
shown here.
Stern 135° 12 pts

All-Round 360° 32 pts