From the back of the book:
Every society needs it's pathfinders and pioneers - those who will go boldly into the unknown to chart new territory, explore new routes, seek out new civilisations and extend the influence of their species.
These are the Scouts: lone explorers and specialised teams who brave the dangers of space to extend knowledge, understanding and influence. This book takes a detailed look at Scouts, including expanded character generation, new missions, new equipment and new ships. It includes chapters on how worlds are surveyed and mapped, and how to survive in hostile environments. Also included is a sample scout base with its personnel and an overview of the Imperium's Scout Service, the ISS.
A must for all Traveller pioneers!