RedactedNarrative: Unit 2 was traveling North East in Lake Marion near Ballards Pointe away from the I-95 Bridge. Unit 1 was traveling in the same direction and went to pass in front of unit 2 in order to splash them when the operator of unit 1 entered the path of travel of unit 2 causing unit 2 to strike unit one in port side stern causing minor damage. the structural integrity of unit 2 was compromised when they lost a pontoon after the collision causing them to lose control and struck unit 1 again. unit 2 then sunk.