80TH CONG., 2D SESS.- CH. 328-MAY 21, 1948 point on the port bow to two points abaft the beam on the star- board side, and of such a character as to be visible at a distance of at least three miles. "(b) On the port side a red light so constructed and fixed as to show the light from ahead and not more than half a point on the starboard bow, to two points abaft the beam on the port side, and of such a character as to be visible at a distance of at least three miles. "(c) The said green and red side lights shall be fitted with inboard screens painted black and projecting at least three feet forward from the light, so as to prevent these lights from being seen more than half a point across the bow. "(d) At or near the stern, where they can best be seen, two red lights in a vertical line, one over the other, not less than three feet apart, of such a character as to be visible from aft for a distance of at least two miles, and so screened as not to be visible forward of the beam. "RULE NUMBERED 4. A steam vessel when towing another vessel or vessels on a hawser astern shall carry, in addition to the side lights described in rule 3 (a), (b), and (c) and at a greater height than those lights, in the forward half of the vessel, two bright white lights in a vertical line, one over the other, at least three feet apart. Each of these lights shall be so constructed as to show an unbroken light over an arc of twenty points of the compass, so fixed as to throw the light ten points on each side of the vessel, namely, from right ahead to two points abaft the beam on either side and of such a character as to be visible at a distance of at least three miles. "RULE NUMBERED 5. A seagoing steam vessel underway shall carry lights as required by article 2, International Rules, as amended. "RULE NUMBERED 6. A river steamer, by which is meant a river-type steam vessel with two smokestacks in an athwartship line, may carry, in lieu of the lights prescribed by rule 7 (a), the following lights, namely: One red light on the outboard side of the port smokestack and one green light on the outboard side of the starboard smokestack. Such lights shall show forward, aft, and abeam on their respective sides. "RULE NUMBERED 7. (a) A steam vessel underway, except as otherwise provided in these rules, shall carry, in addition to side lights as described in rule 3 (a), (b), and (c), a central range of two white lights, the after light being carried at an elevation higher than the light at the head of the vessel. The headlight shall be so constructed as to show an unbroken light through twenty points of the compass, namely, from right ahead to two points abaft the beam on either side of the vessel, and the after light so as to show all around the horizon. "(b) The lights for barges, canal boats, scows, and other vessels of nondescript type, when in tow of steam vessels, and for ferryboats, shall be as prescribed by the Commandant, United States Coast Guard. "RULE NUMBERED 8. A sailing vessel under way, and any vessel being towed except barges, canal boats, scows, and other vessels of nondescript type when in tow of steam vessels, shall carry screened side lights as prescribed by rule 3, sections (a), (b), and (c), for a steam vessel, and a stern light as prescribed by rule 10. "RULE NUMBERED 9. 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 Additional lights when towing. Vessel underway. 26 Stat. 321. 33 U.S. C. §72. "River steamer." Infra. Additional lights for vessel underway. Ante, p. 250 . Barges, etc., in tow; ferryboats. Sailing vessel under- way; vessels in tow. Ante, p. 250; post, p. 252. Portable lights. 62 STAT. ] 251
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