The Royal Bahrain Naval Force (RBNF) (previously known as Bahrain Defense Force, Naval Branch), is the maritime branch of the Bahrain Defense Force. The Commander of the Navy is Lieutenant Commander Yusuf al-Maluallah. The navy consists of 11 combat vessels, 22 patrol craft and over 700 personnel. The Fleet is based at Mina Sulman Naval Base and has a flight wing which can operate off the corvettes, consisting of two MBB BO-105 helicopters. The flagship of the RBNF is the vessel RBNS Sabha, an American-built missile frigate given to the state as a gift in 1996.