Oil is one of Earth's most coveted resources, and transporting massive quantities of this product requires mammoth machinery. This information-rich book introduces readers to the different types of oil tankers, from crude tankers to supertankers. Detailed photographs allow readers to explore gigantic oil tankers inside and out. Readers will learn how these hulking crafts are designed to carry enormous burdens across the oceans. They'll also meet the crews that operate these dangerous, powerful machines. An inside look at the loading and unloading processes shows readers what it's like to work on an oil tanker. This informative book will attract curious readers in any library.