The Sea Harrier FRS.1 was a specialised version of the Hawker-Siddeley Harrier, designed for naval operations. It joined the Royal Navy of the United Kingdom in 1978 and gained fame for its role in the Falklands War in 1982, where it defended the fleet from enemy aircraft attacks with great success. Despite being vastly outnumbered, the Sea Harriers shot down 21 Argentinean planes without losing any of their own, a remarkable accomplishment that demonstrated the superiority of the aircraft. In a subsequent upgrade, the Sea Harrier FRS.1 was equipped with a 2x2 Aim-9L configuration, further enhancing its air combat capabilities.

The Sea Harrier FRS.1 was introduced in Update "Apex Predators". The Sea Harrier is available as an option for rank VII through unlock as a squadron vehicle. It can present experienced pilots familiar with the GR.1/3 with a further improvement in the form of deadly AIM-9L Sidewinder missiles and a unique position since it is one of the few Harrier versions in game equipped with a radar. Ultimately, the Sea Harrier builds on the strengths of the Harrier GR.3 with improved air-to-air combat capability. However this comes at a cost of being heavier and slightly more sluggish than its contemporaries. All in all, the Sea Harrier can be a powerful opponent in the hands of a veteran pilot and provides an almost preparatory experience for the Harrier GR.7.