For other uses, see
Navy (disambiguation) or
Naval (disambiguation). A navy is the branch of a country's
military forces principally designated for
naval warfare and amphibious warfare (marines) namely
lake- or
ocean-borne
combat operations and related functions. It includes operations conducted by
surface ships,
amphibious ships,
submarines, and seaborne
aviation, as well as ancillary support, communications, training, and other fields; recent developments have included
space related operations. The strategic offensive role of a Navy is projection of force into areas beyond a country's shores (for example, to protect sea-lanes, ferry troops, or attack other navies, ports, or shore installations). The strategic defensive purpose of a Navy is to frustrate sea-borne projection-of-force by enemies. The strategic task of the navy also may incorporate nuclear deterrence by use of nuclear missiles.
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