RedactedNarrative: Unit 1 and 2 both traveling south. Unit 1 slowed and was turning left. Unit 2 didn't immediately see the maneuver and slowed down but was unable to avoid striking unit 1 in the port/left rear portion of the vessel. There was a cracked portion on Unit 1 about 6" x 4" in the fiberglass. None of the parties reported any injuries.