CONTENTS Under the Water 4 Parts of the Sub 6 Diving Sub 8 Working Closely Together 10 Start the Engine 12 The Fastest Sub 14 What Subs Do 16 In the Ohio Class 18 The Russian Typhoon 20 Inside the Typhoon Class 21 Glossary 22 Index 23
Under the Water Submarines or subs are boats that can go under the water Some submarines are very small The smallest subs don’t even hold people They’re robots Other subs are so big they can hold more than 150 people 4
