TABLE OF CONTENTS CHAPTER 1 Powerful Engines 4 CHAPTER 2 Hull Design 10 CHAPTER 3 Speedy Boats 16 ACTIVITIES TOOLS Try This 22 Glossary 23 Index 24 To Learn More 24
CHAPTER 1 POWERFUL ENGINES Whoosh A boat skips across the waves Water sprays behind it It is a speedboat These boats can go more than 100 miles 161 kilometers per hour
Boats float because of an upward force called buoyancy When a boat is placed in water it pushes water out of its way If a boat weighs more than the water it displaces it sinks If it weighs less it floats
