RedactedNarrative: On October 24, 2018, Operator 1 was operating a rental vessel on the bay side of Marathon.  There were three persons on board the vessel and they noticed the vessel was not handling as it should while on plane.  Operator 1 observed a large amount of water in the vessels bilge compartment.  They navigated towards the nearest point of land where the vessel was tied to a dock.  The vessel partially submerged while tied to the dock. The vessel was rented from Quality Boat rentals, owned by the owner.  The owner arrived on scene shortly after me.  The vessel was pulled out of the water by the owner and taken down to Cudje Key to be repaired.  I took pictures of the damaged vessel while on the trailer. The hull had a hole in the hull below the waterline, the length of time the hull has been damaged is unknown.