RedactedNarrative: Vessel traveling westbound within ICW/Venice Inlet.  As vessel exited ICW/Venice Inlet, vessel began to change direction, intending to travel north bound within the Gulf of Mexico.  While changing direction and traveling north west, vessel struck a submerged piling on its starboard side.  
  
  The piling was submerged and its view obstructed by the action of the waves.  The piling, recently broken, was formerly the green number one marker and was not properly marked as a hazard to navigation.  The submerged piling was located on the north side and just to the west of the ICW/Venice Inliet/North Jetty.