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LIGHTS FOR NIGHT AND RESTRICTED VISIBILITY OPERATION
- "Masthead light" means a white light placed over the fore and aft centerline
of the vessel showing an unbroken light over an arc of the horizon of 225
degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft
the beam on either side of the vessel, except that on a vessel of less than 12
meters in length the masthead light shall be placed as nearly as practicable to
the fore and aft centerline of the vessel.
- "Sidelights" mean a green light on the starboard side and a red light on
the port side each showing an unbroken light over an arc of the horizon of 112.5
degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft
the beam on its respective side.
- On a vessel of less than 20 meters in length the side lights may be combined
in one lantern (combination bow light) carried on the fore and aft centerline of
the vessel, except that on a vessel of less than 12 meters in length the
sidelights when combined in one lantern shall be placed as nearly as practicable
to the fore and aft centerline of the vessel.
- "Sternlight" means a white light placed as nearly as practicable at the
stern showing an unbroken light over an arc of the horizon of 135 degrees and so
fixed as to show the light 67.5 degrees from right aft on each side of the
vessel.
WESTERN RIVERS AND GREAT LAKES WATERS
A power-driven vessel when operating on the Great Lakes may carry an all-round
white light in lieu of the second masthead light and sternlight. The light shall
be carried in the position of the second masthead light and be visible at the
same minimum range.
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