846 NAS was given the role of Maritime Counter Terrorism after the disbandment of 848 Naval Air Squadron and its Sea King HC4 helicopters. 847 Naval Air Squadron 847 NAS operates Wildcat AH1 helicopters, in light transport and reconnaissance roles. Decommissioned Unit 848 Naval Air Squadron 848 NAS was the Commando Sea King HC4 training unit for the CHF, and trained not only the aircrews but also the ground crews. In addition to the skills necessary to fly their missions, Commando Helicopter Force members are trained in small-arms use as well as tactics and survival fieldcraft. Being a naval unit that was directly tasked with supporting the Royal Marines, trainees are also schooled in shipboard and amphibious assault operations. A special unit within 848 Squadron, M Flight, was tasked with supporting the Special Boat Service (SBS) in their operations. 848 NAS disbanded in 2013 but then reformed on 1 May 2015 to continue operating the Sea Kings, maintaining operational capability within the CHF while 845 NAS converted to the Merlin, until the Sea King reached its planned out of service date on 31 March 2016. 848 NAS disbanded 24 March 2016. Personnel Aircrew, recruited from the Fleet Air Arm and Royal Marines, join the force having completed training in helicopter operations under No. 1 Flying Training School at RAF Shawbury. References External links Royal Navy – Commando Helicopter Force Fleet Air Arm Association – Commando Helicopter Force Royal Marine formations and units Naval aviation units and formations of the United Kingdom Military units and formations established in 1997