RedactedNarrative: Vessel 1 struck concrete pillings out side of marked channel. Upon inspection of the vessel, subject showed me a hole on the hull of the vessel visible through one of the storage compartments on the deck. He also made me aware of damage to the propeller. Subject also showed me the track on the Global Positioning System (GPS) which showed that the vessel was operated outside of the channel in an area I recognize to have several concrete pilings submerged and some that extend above the surface of the water.