US Patent 10189548 Ladder with water sensing lights

A ladder for a boat includes a rail configured to be coupled to the boat and a rung supported by the rail. A light source is coupled to at least one of the rung and the rail. A power source provides electrical power to the light source, and a water sensor controls provision of the electrical power to the light source. The electrical power is provided to the light source and the light source is illuminated in response to the water sensor sensing water. A lighted rung for a boat ladder is also provided.