[Code of Federal Regulations]

[Title 33, Volume 1]

[Revised as of July 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 33CFR86.09]



[Page 218-219]

 

                TITLE 33--NAVIGATION AND NAVIGABLE WATERS

 

         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY

 

PART 86_ANNEX III: TECHNICAL DETAILS OF SOUND SIGNAL APPLIANCES--Table 

of Contents

 

                           Subpart A_Whistles

 

Sec. 86.09  Positioning of whistles.



    (a) When a directional whistle is to be used as the only whistle on 

the vessel and is permanently installed, it shall be installed with its 

forward axis directed forward.



[[Page 219]]



    (b) A whistle shall be placed as high as practicable on a vessel, in 

order to reduce interception of the emitted sound by obstructions and 

also to minimize hearing damage risk to personnel. The sound pressure 

level of the vessel's own signal at listening posts shall not exceed 110 

dB(A) and so far as practicable should not exceed 100 dB(A).