The Invincible-class is a type of aircraft carrier used by the Royal Navy of the United Kingdom. Designed in the late 20th century, these ships are known for their ability to operate fixed-wing aircraft and helicopters. They play a crucial role in naval operations, providing air support and enhancing maritime security. Each Invincible-class carrier features a ski-jump ramp for launching aircraft, which allows for shorter takeoff distances. The class includes three ships: HMS Invincible, HMS Illustrious, and HMS Ark Royal. These vessels have been instrumental in various military operations and humanitarian missions throughout their service.