RedactedNarrative: Units 1 & 2 were traveling on Lake Greenwood while Unit 2 was attempting to catch up with Unit 1.  As Unit 2 approached Unit 1, Unit 1 stopped and made a port side turn.  Unit 2 was travelling at such a speed that it could not avoid the collision. Unit 2's bow made impact with Unit 1's port side.  No injuries sustained.