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Uniform State Regulatory Markers
USWMS regulatory markers are white with international orange
geometric shapes; you must obey regulatory markers.
Uniform State Waterway Marking System (USWMS)
FWMS System
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.
CONTROLLED
AREA
DANGER BOATS
KEEP OUT
INFORMATION
DO NOT PASS
BETWEEN SHORE
AND BUOY
SPECIAL
PURPOSE
NAVIGATE TO
STARBOARD
FACING UPSTREAM
NAVIGATE TO
PORT FACING
UPSTREAM
NAVIGATE TO
SOUTH OR WEST
NAVIGATE TO
NORTH OR EAST
MID-CHANNEL
UNIFORM STATE WATERWAY MARKING SYSTEM (USWMS)
KC-0411C
Basic Rules of the Road
Naut Air Sec 2.qxd 8/29/06 4:19 PM Page 2-3