7-22
FORMULA
FASTECH
FASTECH
FWMS
The FWMS Lateral System is for use on
navigable waters except Western Rivers and
Intercoastal Waterways.
The markings on these buoys are oriented from
the perspective of being entered from seaward
(the boater is going toward the port). This means
that red buoys are passed on the starboard (right)
side of the vessel when proceeding from open
water into port, and green buoys to the port (left)
side.
The right side (starboard) of the channel is
marked with RED, even numbered buoys. The left
(port) side of the channel is marked with GREEN,
odd numbered buoys.
The middle of the channel is marked with RED
and WHITE vertically striped buoys; pass close to
these buoys.
Obstructions, channel junctions, etc. are marked
with RED and GREEN horizontally striped buoys.
A RED band at the top means the preferred
channel is to the left of the buoy; a GREEN top
band means the preferred channel is to the right
of the buoy.
Day markers are colored and numbered the same
as buoys. RED, triangular day markers with even
numbers mark the starboard side of the channel.
GREEN, square day markers with odd numbers
mark the port side of the channel.
Lights, bells and horns are used on buoys for
night or poor visibility conditions. Buoys with
unique light flashing characteristics are identified
on nautical charts with the specific flashing
pattern.
Federal Waterways Marking System (FWMS)
Figure 7-24
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