The Bangladesh Navy () is the naval warfare branch of the Bangladesh Armed Forces, responsible for Bangladesh's of maritime territorial area, and the defence of important harbours, military bases and economic zones. The primary role of the Bangladesh Navy is to protect the country's economic and military interests at home and abroad. The Bangladesh navy is also a front line disaster management force in Bangladesh, and participates in humanitarian missions abroad. It is a key regional player in counter terrorism efforts, and engages in global peacekeeping with the United Nations. History Origins The Bangladesh Navy was created as part of Bangladesh Forces during Bangladesh's 1971 liberation war against Pakistan. Its official creation date is July 1971 during the Bangladesh Sector Commanders Conference 1971. In 1971, with West Pakistan imposing a brutal military crackdown in East Pakistan, the Bangladesh Liberation War was already underway. Many Bengali sailors and officers in the Pakistan Navy defected to form the nascent Bangladesh Navy. Initially, there were two ships, PADMA and PALASH, and 45 navy personnel. On 9 November 1971, the first naval fleet, consisting of six small patrol vessels, was inaugurated. These ships tried to carry out raids on the Pakistani fleet, but were mistakenly hit and sunk by the Indian Air Force on 10 December 1971. The next major attack was launched on Mongla seaport. According to official figures from the Bangladesh Navy, a total of 334 sailors were involved with the newly created navy, with 22 being killed in action. Independence to the end of the 20th century The navy carried out around 45 operations during the war: traditional naval operations and unconventional commando operations including guerrilla warfare. In the first leg of the war, defecting Bengali sailors joined the guerrilla forces. It was the eight sailors who defected from the Pakistan Navy submarine PNS Mangro, under construction in France, that pioneered the formation of the naval element during the Liberation War. Later many other naval personnel participated. During the Liberation War, East Pakistan was divided into 11 sectors. Each sector had a Commander and a demarcated area of responsibility except sector 10. Sector 10 was nominally responsible for the coastal belt but actually operated over the entire country. In 1971, it was imperative for the occupation force to keep ports and harbours operative and the sea lines of communication open. The Bangladesh Navy fought to block the sea lines of communication,