RedactedNarrative: Vessel #1 was travelling westbound inside Cleveland Harbor after leaving Gordon Ramp, heading to Whiskey Island.  While travelling, the operator noticed water was being pumped out of the bilge.  The operator stopped the vessel and looked inside the engine compartment, noticing several inches of water inside the bilge.  Having connected the battery before leaving the operator knew that there was not any water inside the vessel beforehand.  The operator turned off the engine and has all occupants put on a lifejacket.  Vessel #1 slowly drifted into the rocks/breakwall in front of Burke Lakefront Airport.  All occupants exit the vessel onto the rock wall to wait for help except for the operator.  Vessel #1 was towed back to Gordon Ramp by the USCG Station Cleveland Harbor.