Abstract: A boat washing system is provided for use with a boat lift having a frame for supporting an boat and a drive mechanism for selectively raising the frame to lift the boat from the water and lowering the frame to lower the boat into the water. The washing system includes a sprayer assembly having a plurality of spray nozzles. The sprayer assembly is communicably connected to a source of water under pressure. The sprayer assembly is mounted to the frame of the boat lift such that the spray nozzles are directed at the hull of the boat supported on the frame. Water is introduced into the sprayer assembly and directed through the spray nozzles at the hull of the boat.