66 LAWS GOVERNING MARINE INSPECTION 



Second. A bright wliite light aft to show all around the horizon 

 and higher than the white light forward. 



Third. On the starboard side a green light so constructed as to show 

 an unbroken light over an arc of the horizon of ten points of the com- 

 pass, 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 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. The said side 

 lights shall be fitted with inboard screens of sufficient height so set 

 as to prevent these lights from being seen across the bow. 



(c) Motorboats of classes A and 1 of section 526a of this title 

 when propelled by sail alone shall carry the combined lantern, but 

 not the white light aft, prescribed by this section. Motorboats of 

 classes 2 and 3 of section 526a of this title when so propelled, shall 

 carry the colored side lights, suitably screened, but not the white 

 lights, prescribed by this section. Motorboats of all classes, when so 

 propelled, shall carry, ready at hand, a lantern or flashlight showing 

 a white light which shall be exhibited in sufficient time to avert 

 collision. 



(d) Every white light prescribed by this section shall be of such 

 character as to be visible at a distance of at least two miles. Every 

 colored light prescribed by this section shall be of such character as 

 to be visible at a distance of at least one mile. The word "visible" in 

 this Act, when applied to lights, shall mean visible on a dark night 

 with clear atmosphere. 



(e) When propelled by sail and machinery any motorboat shall 

 carry the lights required by this section for a motorboat propelled 

 by machinery only. 



(f) Any motorboat may earn- and exhibit the lights required by 

 the Regulations for Preventing Collisions at Sea, lO-tS, Act of October 

 11, 1951 (65 Stat. 406-420), as amended, in lieu of the lights required 

 by this section. (Apr. 25, 1940. c. 155, § 3, 54 Stat. 164; June 4, 1956, 

 c. 353, §§ 1, 2, 70 Stat. 228.) 



Whistles or other sound-producing appliances 



46 U.S.C. 526c 



Every motorboat of class 1, 2, or 3, shall be provided with an effi- 

 cient whistle or other sound-producing mechanical appliance. 



Bells 



46 U.S.C. 526d 



Every motorboat of class 2 or 3 shall be provided with an efficient 

 bell. 



Life preservers, etc. 



46 U.S.C. 526e 



Every motorboat subject to any of the provisions of this Act and 

 also all vessels i)ropelled by machinery other than by steam more 

 than sixty-five feet in length shall carry at least one life preserver, 



