RedactedNarrative: On 7/27/18 at approximately 1352 hours, Dep. and I (Dep.) were dispatched to a report of a boat crash at the Gateway Marina in Harrison, Idaho. Operator was operating a rented pontoon boat when she was undocking from the back side of the Gateway Gas Docks. While she was undocking she was moving too quickly and the wind pushed the vessel towards the pedestrian bridge between the docks and the breakwater docks. Operator attempted to push off of the bridge to get the vessel away and her arm got pinched between the vessel and the bridge. Her arm broke the rearview mirror and caused a large deep laceration to her lower arm below the elbow. Due to the laceration being so close to the artery they transported Operator to the hospital via life flight. We arrived at Kootenai Medical and got Operator's statement which was consistence with what the other witnesses stated. A safety inspection was completed and the vessel passed all of the required equipment.  THe operator had been drinking.