Watch The Shape of Speed (1970) : Full Movie Online Free Join experts Lowell North, John Marshall and Dick Deaver as they guide you through this comprehensive look at various sail shapes and boat-handling techniques. Whether you're racing or cruising, this program will help you move faster through the water by teaching you all about mainsails, headsails and spinnakers. The advice and knowledge gained through this informative video will lead to greater speed and improved results on the sea.