[Code of Federal Regulations]
[Title 33, Volume 2]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 33CFR164.15]

[Page 617-618]
 
                TITLE 33--NAVIGATION AND NAVIGABLE WATERS
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 164_NAVIGATION SAFETY REGULATIONS--Table of Contents
 
Sec. 164.15  Navigation bridge visibility.

    (a) The arrangement of cargo, cargo gear, and trim of all vessels 
entering or departing from U.S. ports must be such that the field of 
vision from the navigation bridge conforms as closely as possible to the 
following requirements:
    (1) From the conning position, the view of the sea surface must not 
be obscured by more than the lesser of two hip lengths or 500 meters 
(1640 feet) from dead ahead to 10 degrees on either side of the vessel. 
Within this arc of visibility any blind sector caused by cargo, cargo 
gear, or other permanent obstruction must not exceed 5 degrees.
    (2) From the conning position, the horizontal field of vision must 
extend over an arc from at least 22.5 degrees abaft the beam on one side 
of the vessel, through dead ahead, to at least 22.5 degrees abaft the 
beam on the other side of the vessel. Blind sectors forward of the beam 
caused by cargo, cargo

[[Page 618]]

gear, or other permanent obstruction must not exceed 10 degrees each, 
nor total more than 20 degrees, including any blind sector within the 
arc of visibility described in paragraph (a)(1) of this section.
    (3) From each bridge wing, the field of vision must extend over an 
arc from at least 45 degrees on the opposite bow, through dead ahead, to 
at least dead astern.
    (4) From the main steering position, the field of vision must extend 
over an arc from dead ahead to at least 60 degrees on either side of the 
vessel.
    (b) A clear view must be provided through at least two front windows 
at all times regardless of weather conditions.

[CGD 85-099, 55 FR 32247, Aug. 8, 1990]