Illustrated by examples from naval and military history, the book explains and analyzes the strategies of the weaker side at sea in both peacetime and wartime; in defense versus offense; the main prerequisites for disputing control of the sea; and the conceptual framework of disputing control of the sea. It also explains and analyzes in some detail the main methods of disputing sea control – avoiding/seeking decisive encounters, weakening enemy naval forces over time, counter-containment of enemy naval forces, destroying the enemy’s military-economic potential at sea, attacks on the enemy coast, defense of the coast, defense/capturing important positions/basing areas, and defense/capturing of a choke point. A majority of the world’s navies are currently of small or medium-size. In the case of a war with a much stronger opponent, they would be strategically on the defensive, and their main objective then would be to dispute control of the sea by a stronger side at sea. This book provides a practical guide to such a strategy. This book would be of much interest to students of naval power, maritime security, strategic studies and military/naval history.