Summary: Photographs and text introduce readers to various machines that work on the water including ocean liners, fishing and sailing boats, tankers, aircraft carriers, and submarines, drilling rigs, and warships

A satellite is a small object traveling around something bigger. The Moon is a natural satellite of Earth. A spacecraft launched into orbit around Earth is an artificial satellite. Since Sputnik-1, about 6,000 more satellites have been launched by 40 countries. Nearly 4,000 are still in orbit, and about 1,000 of them are still working. Learn about how we use satellites every day without knowing it to talk on the telephone, watch television, use the...

"Get ready...as a young man in Civil War America, you are about to become involved in a highly dangerous underwater arms race. You could get into very deep water in the first submarine..."--Cover back