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a THOMPSON'S COAST PILOT. 119 ARTICLE 1. In the following rules every steamship which is under sail, _and not under steam, is to be considered a sailing ship; and every steam- ship which is under steam, whether under sail or not, is to be considered a ship under steam. 7 ARTICLE 2. The lights mentioned in the following articles, and no others, shall be carried in all weathers between sunset and sunrise. ARTICLE 3. All steam vessels, when under way, shall carry-- (a) At the foremast head, a bright white light, so fixed as to show an uniform and unbroken light over an arc of the horizon of twenty points of the compass, so fixed as to throw the light ten points on each side of the ship, viz: From right ahead to two points abaft the beam on either side, and of such a character as to be visible on a dark night, with a clear atmos- phere, at a distance of at least five miles. (5) On the starboard side, a green light, so constructed as to throw an uniform and unbroken light over an arc of the horizon of ten points of the compass, so fixed as to throw the light from right ahead to two points abaft the beam on the starboard side, and of such a character as to be visible on a dark night, with a clear atmosphere, at a distance of at least two miles. * (c) On the port side a red light, so constructed as to show an uniform unbroken light over an arc of the horizon of ten points of the compass, so fixed as to throw the light from right ahead to two points abaft the beam on the port side, and of such a character as to be visible on a dark night, with a clear atmosphere, at a distance of at least two miles. _(@) 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 pre- vent these lights from being seen across the bow. ARTICLE 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. Each of these masthead lights shall be of the same construction and character as the masthead lights which other steamships are required to carry. ARTICLE 5. Sailing ships under way or being towed, abinlt carry the same lights as steamships under way, with the exception of the white masthead lights, which they shall never carry. | ARTICLE 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 be provided with suitable screens.