RedactedNarrative: Boat operator stated that he attempted to dock the vessel at the marina but had a loss of steering. Operator stated he was using the throttles to control the movement of the vessel and then lost throttle control. The boat was caught by the current of the channel and was pushed into the 5th street bridge causing significant damage to the top deck of the vessel. Operator then jumped out of the vessel to avoid getting injured during the impact. Operator had his life jacket on and then swam to the shoreline. Operator stated he had back and neck pain but refused treatment. Operator stated he would make an appointment with his chiropractor that day. The Vessel damage was determined by Delaware City Marina whom were contracted to estimate the damage.