HMS Brocklesby is a Hunt-class mine countermeasures vessel of the British Royal Navy, her primary purpose is to find and neutralise sea mines using a combination of; Sonar, Mine Clearance Divers and the Seafox remotely operated vehicle (ROV). The class are the largest warships of glass-reinforced plastic (GRP) construction, which gives the vessels a low magnetic signature. In addition to her mine countermeasures activities, Brocklesby acts as an offshore patrol vessel, undertaking coastal patrol and fisheries protection duties.

The Hunt class is a class of thirteen mine countermeasure vessels of the Royal Navy. As built, they combined the separate roles of the traditional minesweeper and that of the active minehunter in one hull, but later modifications saw the removal of mine-sweeping equipment. They have a secondary role as offshore patrol vessels.