RedactedNarrative: While in Dewee's Inlet, according to statements from persons involved, Unit 1 slowed down then sped up again and operator turned her head and ended up hitting the port stern of Unit 2 while both vessels were underway at approximately 13 mph. Operator of Unit 2 fell into the water after the collision. Both operators were wearing life jackets, type 111 , at the time and neither party complained of injury and denied any type of medical assistance.  Neither operator said they saw the other until collision.