The Pakistan Navy (Urdu: پاک بحریہ) is the naval branch of the military of Pakistan. It is responsible for Pakistan's 1,046 kilometer (650 mile) coastline along the Arabian Sea and the defense of important harbors. It operates a wide range of ships ranging from cruisers to destroyers as well as submarines. Navy day is celebrated on September 8 in commemoration of the Indo-Pakistani War of 1965