RedactedNarrative: Vessel was tied to the dock at Alum Creek Marina slip 617. Owner state they were last on the boat last Sunday 6/26/16 and everything appeared normal.  Owner got a phone call this morning stating his vessel had sunk and was fully submerged.  The owner made contact with Johns Towing for recovery.  Once Johns Towing arrived on scene and assessed the situation they were able to float the vessel with airbags and tow it over to the launch ramp.  When the vessel was pulled from the water it began to leak out around the drain plug.  A member of the recovery team  stated the bilge plug wasn't in real tight.