NAVIGATION. 117 



night, the fog signals, described below, shall be 

 carried and used, and shall be sounded at least 

 every five minutes, viz. : 



" (a) Steam ships under way shall use a steam 

 whistle placed before the funnel not less than eight 

 feet from the deck. 



" (b) Sailing ships under way shall use a fog- 

 horn. 



"(c) Steam ships and sailing ships when not 

 under way shall use a bell. 



"Art 15. If two ships, one of which is a sail- 

 ing ship, and the other a steam ship, are proceed- 

 ing in such directions as to involve risk of collision, 

 the steam ship shall keep out of the way of the 

 sailing ship. 



"Art. 1 6. Every steam ship when approaching 

 another ship so as to involve risk of collision shall 

 slacken her speed, or if necessary stop and reverse ; 

 and every ship shall, when in a fog, go at a 

 moderate speed. 



"Art. 17. Every vessel overtaking any other 

 vessel shall keep out of the way of the said last- 

 mentioned vessel. 



