VESSEL WAS CRUISING WHEN IT SIDESWIPED A DAY MARKER. THE OPERATOR STATED THAT HE IS UNFAMILIAR WITH THE RIVER HE WAS OPERATING IN, IN ADDITION TO IT BEING AT NIGHT WITH HEAVY TRAFFIC DUE TO FIREWORKS DISPLAY.  OPERATOR ALSO ADVISED HE WAS RUNNING BASED ON GPS, AND INVESTIGATING OFFICER ADVISES THAT ALL CHARTED GPS LOCATIONS IN THAT RIVER ARE INCORRECT.  AMBIENT SHORE LINE LIGHTING ALSO MAKES IT DIFFICULT TO NAVIGATE WHEN UNFAMILIAR WITH THE RIVER.
ANNAPOLIS                     