Abstract: The sailboat is provided with an outwardly projecting outrigger which is built like a container and is buoyant. Valve controlled openings are constructed in the outrigger below the water line so a controlled amount of water can enter the outrigger and serve as ballast to make the outrigger heavier so it acts like an adjustable lateral keel. A motor controlled air pump is on the boat and connected to the outrigger by air lines. In this way operation of the air pump drives the water out of the controlled openings to lighten the boat.