A. On the starboard side, a green light so constructed as to show an unbroken light over an arc of the horizon of 10 points of the compass, so fixed as to throw the light from right ahead to two points abaft the beam on the starboard side; on the port side, a red light so constructed as to show an unbroken light over an arc of 10 points of the compass, so fixed as to throw the light from right ahead to two points abaft the beam on the port side; the side light shall be fitted with inboard screen of sufficient height so set as to prevent these lights from being seen across the bow; provided, that motorboats less than 26 feet in length when being propelled by a sail alone may carry, in lieu of the foregoing red and green side lights, a combined lantern in the forepart of the boat showing green to starboard and red to port so fixed as to throw the light from dead ahead to two points abaft the beam on their respective sides;

B. At her stern a white light so constructed as to show an unbroken light over an arc of the horizon of 12 points of the compass so fixed as to show the light from dead astern to two points abaft the beam on either side; such light shall be carried as nearly as practicable on the same level as the colored lights; provided, that motorboats of 65 feet in length or less when propelled by sail alone may, in lieu of the white stem light prescribed under this subsection, keep ready at hand a white light which shall be temporarily exhibited in sufficient time to prevent collision. [Ord. 8655 § 3(E), 1978].