45
—INLAND—
Lights and Shapes
RULE 23
Power-driven Vessels Underway
(a) A power-driven vessel underway shall exhibit:
(i) a masthead light forward;
(ii) a second masthead light abaft of and higher than the forward
one; except that a vessel of less than 50 meters in length shall
not be obliged to exhibit such light but may do so;
(iii) sidelights; and
(iv) a sternlight.
Power-driven vessel underway—less than 50 meters in length.
Same for International.