Contents

Contents : What is a submarine? -- Invisible enemies -- HMS Astute -- Diving and surfacing -- Engine room -- Seeing out -- Submarine masts -- Seeing with sound -- Sending signals -- Submarines at war -- The First World War -- The Second World War -- Miniature submarines -- Going nuclear -- Torpedoes -- Missiles -- Oceanography -- Robot submarines -- Undersea explorers -- Secrets of the ocean -- Emergency rescue -- Emergency escape -- Training submarines -- The very first subs -- Subs on the internet -- glossary -- index -- acknowledgements.