1967 when the UK and US contemplated forming an international fleet to open the straits with force if necessary, but the UK backed down. Commando/ASW/STOVL carrier When the decision was made in the mid-1960s to phase out fixed wing carrier operations Hermes was slated to become a "Commando Carrier" for Royal Marine operations (similar in concept to a US Navy LHA). Therefore, Hermes was docked down in number 10 Dock in Devonport Dockyard between 1971 and 1973, undergoing a conversion in which her arresting cables, steam catapults, and 3-D radar were removed. Landing craft and berthing for 800 troops were added and her airwing became approximately 20 Westland Sea King helicopters. By 1976, with the Soviet submarine threat becoming apparent and through NATO pressure, a further mild conversion was performed for Hermes to become an anti-submarine warfare carrier to patrol the North Atlantic. Hermes underwent one more conversion and new capabilities were added when she was refitted at Portsmouth from 1980 to June 1981, during which a 12° ski-jump and facilities for operating BAe Sea Harriers were incorporated. After this refit the air wing comprised: 800 NAS 5 Sea Harrier FRS.1 fighter 826 NAS 12 Sea King HAS.5 ASW Falklands War Hermes was due to be decommissioned in 1982 after the 1981 Defence Review (that would have made the Royal Navy considerably smaller) by the British government, but when the Falklands War broke out, she was made the flagship of the British forces, setting sail for the South Atlantic just three days after the Argentine invasion of the Falkland Islands. She sailed for the Falklands with an airgroup of 12 Sea Harrier FRS1 attack aircraft of the Royal Navy's Fleet Air Arm, and 18 Sea King helicopters. A few weeks after sailing, more aircraft were flown or transported via other ships to replace some losses and augment the task force. Hermess airgroup grew to 16 Sea Harriers, 10 Hawker Siddeley Harrier GR3s of the Royal Air Force, and 10 Sea Kings (after some of the helicopters were dispersed to other ships) as well as a troop of Special Air Service (SAS) and Royal Marines. As she was the RN's largest carrier, she was considered too valuable to risk in close to the Falklands, due to the possibility of Argentine air force attacks. Her Harriers therefore operated at the limit of their endurance radius but were very successful in keeping the