RedactedNarrative: Vessel was cruising at approximately 5 knots when operator noticed that the bilge area was flooding through engine well. The vessel flooded and sank by the stern. 
  
  The 18' vessel was cruising, according to the operator, at 5 knots in a west northwesterly heading on the waters of Santa Rosa Sound north of Pensacola Beach. This motor vessel is a displacement hull vessel that was originally a sailing vessel. There is an engine well where a 9.9 horsepower outboard motor is mounted. There were four adults aboard and all were positioned in the aft portion of the vessel. The operator noticed water at his feet. He had his passengers move forward and reduced power. He then lifted the deck hatch to the bilge area and found it flooding through the engine well. He was unable to dewater as battery was already disabled. He told his passengers to all grab personal floatation devices. The vessel sank by the stern in what the operator estimated was less than five minutes. 
  
  All aboard were rescued by a passing motor vessel, the Irish Wake. All occupants reported that they were not injured.