RedactedNarrative: UNIT 2 WAS ATTEMPTING TO PULL OUT OF A SLIP WHEN IT ALMOST COLLIDED WITH A DOCKED VESSEL.  IN AN ATTEMPT TO AVOID THE COLLISION, UNIT 2 USED TOO MUCH THROTTLE CAUSING IT TO COLLIDE WITH UNIT 1 WHICH WAS ON A LIFT.  BOTH UNITS SUSTAINED DAMAGE AND THERE WERE NO INJURIES AS A RESULT OF THIS INCIDENT.