RedactedNarrative: The sailboat Nauti Lass was travelling south in the Delaware River under engine power at approximately 0300 hours on May 30, 2019.   The vessel operator and two passengers acting as spotters saw the anchored dredge Essex in the shipping channel.  
  
  The Nauti Lass operator also advised that he saw the Essex on the AIS plotter and decided to travel between the Essex and the tender dredge tugboat. The operator of the dredge Essex stated they hailed the vessel on marine radio channel 16 and never received a reply.  
  
  They also stated they alerted via horn and the sailboat never changed course.  The operator stated he never saw the dredge pipe marker lights.  The Nauti Lass struck the anchored dredge pipe midway between the two anchored dredge vessels.  
  
  The impact caused damage to the sailboats bow, no damage was done to the dredge pipe.  The sailboat was able to remain afloat and transit to the Delaware City Marina under their engine power.
  
  Note: There was a crew of 20 persons on the dredge operation.  Only the safety officer was interviewed for information.