Note.To fix firmly in the mind the side of the vessel on which the lights belong, the following, although original, is recommended: Port wine is red, and the RED LIGHT is always on the PORT SIDE.
(d.) The said green and red side-lights shall be fitted with inboard screens, projecting at least three feet forward from the light, so as to prevent these lights from being seen across the bow.
LIGHTS FOR STEAM-TUGS.
Art. 4.—Steamships, when towing other ships, shall carry two bright white masthead lights vertically, in addition to their side-lights, so as to distinguish them from other steamships.
LIGHTS FOR SAILING-VESSELS.
Art. 5.—Sailing-vessels under way, or being towed, shall carry the same lights as steamships under way, with the exception of the white masthead lights, which they shall never carry.
EXCEPTIONAL LIGHTS FOR SMALL SAILING-VESSELS.
Art. 6.—Whenever, as in the case of small vessels during bad weather, the green and red lights cannot be fixed, these lights shall be kept on deck, on their respective sides of the vessel, ready for instant exhibition; and shall, on the approach of or to other vessels, be exhibited on their respective sides in sufficient time to prevent collision, in such manner as to make them most visible, and so that the green light shall not be seen on the port side, nor the red light on the starboard side. To make the use of these portable lights more certain and easy, they shall each be painted outside with the color of the light they respectively contain, and shall be provided with suitable screens.