Code of Federal Regulations Title 33. Navigation and Navigable Waters § 33.83.22 Visibility of lights (Rule 22)

(i) A masthead light, 6 miles;

(ii) A sidelight, 3 miles;

(iii) A sternlight, 3 miles;

(iv) A towing light, 3 miles;

(v) A white, red, green or yellow all-round light, 3 miles;  and

(vi) A special flashing light, 2 miles.

(i) A masthead light, 5 miles;  except that where the length of the vessel is less than 20 meters, 3 miles;

(ii) A sidelight, 2 miles;

(iii) A sternlight, 2 miles;

(iv) A towing light, 2 miles;

(v) A white, red, green or yellow all-round light, 2 miles;  and

(vi) A special flashing light, 2 miles.

(i) A masthead light, 2 miles;

(ii) A sidelight, 1 mile;

(iii) A sternlight, 2 miles;

(iv) A towing light, 2 miles;

(v) A white, red, green or yellow all-round light, 2 miles;  and

(vi) A special flashing light, 2 miles.

(i) A white all-round light, 3 miles.

(ii) [Reserved]