vessel 1 was traveling from elliot' flat towards the santee River in a small creek at idle speed. vessel 2 was traveling the same creek heading from santee river towards elliot's flats at nearly full throttle. once rounding a curve in the creek. vessel 2 saw vessel 1 right before the collison and hit vessel 1 on the portside. vessel 2 turned abruptly before the collison.The manuver by vessel 2 avided a head on collison but the prop of vessel 2 hit the portside of vessel 1 causing damage to the trolling motor and to the fiberglass and paint.in additon to the damage caused be vessel 2, a passenger on vessel 1, in anticipation of the collision jumped from the portside of vessel 1 towards the steering wheel of vessel 1 and broke the windshield. subject suffered a small cut on his hand. At the time the officer received the call from the radio room he contacted vessel 1 and they directed him towards low falls landing where the officer found the driver and passenger of vessel 2. the officer did field interviews of people in both vessels 1 & 2 and talked with both operators. The officer did field sobriety tests with the operator of vessel 2 and then arrested him for boating under the influence (BUI).