RedactedNarrative: Operator #1 stated, I was headed south and the marker was completely under water. I could not see it. 
  
      Witness #1 stated, He was headed back and you could not see the green marker right before the bridge. 
  
     Investigation revealed,  Operator # 1 was operating the above listed vessel in the Delaware River, just North of the Tacony Palmyra Bridge.  Operator #1 did not observe the green #11 channel marker which was submerged just below the waters surface.  Vessel #1 struck the channel marker on the keel just below the water line.  Vessel #1 sustained fiberglass scrapes down the keel.  After traveling under the vessel the channel marker struck the out drive causing the lower portion to break off just above the prop.  It should be noted the channel marker was properly floating upon our arrival.   Investigation revealed the marker was submerged due to the fact that the channel marker sustained damage to the top and the vessel sustained damage below the water line.  
  
     Vessel #1 lost all power and began to take on water from the out drive.  A following vessel arrived and towed the disabled sinking vessel to the closest shore line.  After determining the vessels bilge pump could keep up the vessel was towed to Frankford Arsenal Ramp in Philadelphia Pennsylvania. Same was loaded on a the owners trailer and inspected for damage. 
  
      United States Coast Guard arrived and assisted with other vessel traffic.  There were no injuries and no summonses were issued.  
     
  