RedactedNarrative: OPERATOR 1 WAS OPERATING VESSEL 1 WHILE TRAVELING AT IDLE SPEED AND TOWING 2 WATER SKIERS ON A TUBE. AS OPERATOR 1 WAS TRAVELING WITH THE WATER SKIERS BEHIND IT ON THE WATER TUBE, THE SKIERS WENT TO MAKE A TURN WHICH CAUSED SLACK IN THE SKI ROPE. AS OPERATOR 1 ACCELERATED VESSEL 1, THE SKI ROPE SNAPPED BACK CAUSING 1 OF THE SKIERS ARM TO JERK FORWARD CAUSING THEM TO SUSTAIN INJURIES. NONE OF THE OTHER OCCUPANTS ON VESSEL 1 SUSTAINED ANY INJURIES. THERE WAS NO DAMAGE TO VESSEL 1.