Submarine: A Guided Tour Inside a Nuclear Warship (1993, ISBN 0-425-13873-9) is a non-fiction book written by Tom Clancy and defense systems analyst John D. Gresham. It explores the inner workings of two submarines, the USS Miami and HMS Triumph.
Some editions of the book have a photo section in the middle; some have a special chapter on Seawolf class submarine and Virginia class submarines. The chapter 'Other people's submarines' has the history and other information about the submarines of other countries. The foreword in the Penguin edition was written by Vice Admiral Roger Bacon. An edition of this book also includes diagrams of various submarines.