Interior of Division of Mechanical Engineering, Hydraulics and Ship Section in Ottawa, showing test basin for ships' hulls, hull being tested. Shots of technician operating robot hull shaping machine. Views of set-up for testing ships' propellors, cavitation phenomenon. Shots of experiment to determine effect of air rubble on surface of water in view of using same to keep waterways free of ice. MCUs of hands of Dr. Sourirajan of India, forming a membrane on the surface of the ice water, then removing same. Shots of scientist at work, of scientist sitting by table covered with equipment, taking notes. Shot of blind scientist, Dr. James Swail entering office, folding cane and sitting down at desk to work.