RedactedNarrative: Operator left Joe's Landing in Barataria at daybreak with his son .  His vessel is a 20' Skeeter bass boat with remote steering.  He was cruising on step across the north end of The Pen at approximately 45-50 mph following a track line from a previous trip.  While passing through a row of pylons that stretch across the pen, his vessel and motor struck a bore pipe that was floating at or near the surface of the water.  The pipe was laid out along the pylons and tied to them.  This collision caused significant damage to the outboard and the transom of his vessel.  Both he and his son were wearing PFDs and neither one of them was injured in the accident.  Alcohol is not believed to be involved.  The contributing factors leading to the accident are believed to be primarily a lack of marking on the pipe itself between the pylons at the time of the accident.  The weather was a secondary factor.  Choppy waters caused by the wind may have helped conceal the pipe sitting at or near the surface of the water.