RedactedNarrative: Victim and operator of vessel purchased this vessel 3 years ago and had been working on it.  This was their maiden voyage and the plan was for the victim to make adjustments to the reefing system he had installed earlier in the week.  The co-owner was at the helm while victim worked on the sails.  Operator was uncomfortable operating this size sailboat even though he had taken sailing lessons four years ago.  He was having trouble controlling the boat and keeping course.  Victim came down to cabin and announced "I did it" when the boom started to move and hit victim with enough force to sweep him off the vessel and into the water.  Operator grabbed his arms but could not pull him enough to get his head out of the water.  The victim slipped out of his hands and started looking for something to throw at him.  Operator threw seat cushions and a ring with the rope attached to victim.  A good Samaritan pulled victim out of water and took him to the commuter dock. PFD's were no on board because it was only going to be a short trip. The victim died.