RedactedNarrative: A boating accident involving two boats occurred on July 13, 2015 at approximately 1:00am at the southwest ledge in Block Island Sound.  EPO reported that boat operator and two other adults were fishing in BLOCK ISLAND Sound.  Operator1 was operating his boat (Maggie May) and traveling at 10 knots. He said he was looking at the plotter and that there was a lantern on in the cabin.  They were repositioning to fish when Operator1’s boat hit another vessel.  He said he didn’t see the other boat because it was dark and there were swells on the ledge.  The other vessel was a 20’ cabin (Sea Ox).  There was one adult and two children on board.  Operator2 reported that he and two other adults were fishing when another vessel (Maggie May) operated hit him in the starboard rear quarter and caused damage to the outboard, crack in the transom and damage to the steering. Damage to his boat was also approximately $3,000.  Cause of accident was FAILURE TO MAINTAIN A PROPER LOOKOUT by Boat Operator1.