RedactedNarrative: On the 10th of August, 2021 at approximately 11:20 hours, Operator 1, while at the upper-deck pilot station, started his houseboat (Vessel 1) in preparation to undock from Wahweap Marina slip  and set forth on a camping trip.  His port-side engine was inoperable.  He backed out of slip under power from his starboard-side engine.  He backed in an arc to-port so that his bow was facing north by northwest towards the Wahweap Marina Wakeless zone and fuel docks.  As he was attempting to turn to-starboard and motor out from between G-Dock and F-Dock, the steering at the upper-deck pilot station failed.  He went downstairs to the main-deck pilot station.  While V1 was without steerage, the wind pushed it back and to-port so that it struck the stern of a houseboat (Vessel 2) docked in slip.  That contact resulted in damage the stern-mounted slide of V2 as well as some upper-deck damage to V2 and slight damage to the port-side, stern-most upper deck support pillar of V1.