Sea Control Law and Legal Definition

A naval force has command of the sea when it is so strong that its rivals cannot attack it directly. Also called sea control, this dominance may apply to its surrounding waters (i.e., the littoral) or may extend far into the oceans, meaning the country has a blue-water navy. It is the naval equivalent of air superiority. With command of the sea, a country (or alliance) can ensure that its own military and merchant ships can move around at will, while its rivals are forced either to stay in port or to try to evade it. It also enables free use of amphibious operations that can expand ground based strategic options.