ORGANIC LAWS GOVERNING U.S. COAST GUARD 35 



of the compass, so fixed as to show the light from right ahead to 20 

 degrees abaft the beam on the port side, and of such a character 

 as to be visible at a distance of at least 2 miles. 



33 U.S.C. 1063 (Rule 3) 



(a) A power-driven vessel when towing or pushing another vessel 

 or seaplane shall, in addition to her sidelights, carry two white lights 

 in a vertical line one over the other, not less than 6 feet apart., and 

 when towing and the length of the tow, measuring from the stem of 

 the towing vessel to the stem of the last vessel towed, exceeds 600 feet, 

 shall carry three white lights in a vertical line one over the other, so 

 that the upper and lower lights shall be the same distance from, and 

 not less than 6 feet above or below, the middle light. Each of these 

 lights shall be of the same construction and character and one of them 

 shall be carried in the same position as the white light prescribed in 

 Rule 2 (a) (i) . None of these lights shall be carried at a height of less 

 than 14 feet above the hull. In a vessel with a single mast, such lights 

 may be carried on the mast. 



(b) The towing vessel shall also show either the stern light pre- 

 scribed in Rule 10 or in lieu of that light a small white light abaft the 

 funnel or aftermast for the tow to steer by, but such light shall not be 

 visible forward of the beam. 



(c) Between sunrise and sunset a power-driven vessel engaged in 

 towing, if the length of tow exceeds 600 feet, shall carry, where it can 

 best be seen, a black diamond shape at least 2 feet in diameter. 



(d) A seaplane on the water, when towing one or more seaplanes 

 or vessels, shall carry the lights prescribed in Rule 2(b) (i), (ii), and 

 (iii) ; and, in addition, she shall carry a second white light of the same 

 construction and character as the white light prescribed in Rule 2(b) 

 (i), and in a vertical line at least 6 feet above or below such light. 



33 U.S.C. 1064 (Rule 4) 



(a) A vessel which is not under command shall carry, where they 

 can best be seen, and, if a power-driven vessel, in lieu of the lights 

 prescribed in Rule 2(a) (i) and (ii), two red lights in a vertical line 

 one over the other not less than 6 feet apart,, and of such a character 

 as to be visible all round the horizon at a distance of at least 2 miles. 

 By day, she shall carry in a vertical line one over the other not less 

 than 6 feet apart, where they can best be seen, two black balls or shapes 

 each not less than 2 feet in diameter. 



(b) A seaplane on the water which is not under command may 

 carry, where they can best be seen, and in lieu of the light prescribed 

 in Rule 2(b) (i), two red lights in a vertical line, one over the other, 

 not less than 3 feet apart, and of such a character as to be visible all 

 round the horizon at a distance of at least 2 miles, and may by day 

 carry in a vertical line one over the other not less than 8 feet apart, 

 where they can best, be seen, two black balls or shapes, each not less 

 than 2 feet in diameter. 



(c) A vessel engaged in laying or in picking up a submarine cable 

 or navigation mark, or a vessel engaged in surveying or underwater 

 operations, or a vessel engaged in replenishment at sea, or in the 

 launching or recovery of aircraft when from the nature of her work 



