Sea Lanes Denial is a tactic aimed at disturbing or destroying enemy naval activity in a defined area and provide a reasonable protection to friendly naval operations in the same area. It can be part of a greater Naval Superiority strategy. To understand how it works, imagine a "corridor" in the sea: own naval units will use this "corridor" to reach their target and perform any required task. The "walls" of this corridor are made from fixed or mobile threats against enemy air or naval activity, anything that can deliver damage to friendly naval units.