The Boatswain's Mate (BM) is primarily responsible for Boarding Operations, Small Arms Weapons and Seamanship. They specialise in Fast Roping from Navy Helicopters in support of boarding ships. The BM is also the Navy's subject matter expert in rifles, pistols, batons and machine guns. Additionally, within the seamanship area of employment, the BM will be able to perform the following tasks: tying knots, rope-work; work with wires, shackles, anchors and small boat operations. They are also required to conduct ships husbandry (Corrosion Control), and evolutions associated with the movement of ships in harbour. Later in their careers, these sailors may sub-specialise as a Navigator's Yeoman and in Shipborne Lifesaving and Survival Equipment.