The helicopter carrier left its home port of Portsmouth at as part of Exercise Cougar.

BBC: HMS Illustrious

An Iranian flotilla that left Iranian waters in September included a navy helicopter carrier and a destroyer, IRNA reported.

CNN: Report: Iranian warships dock in Sudan in show of support

Though primarily a helicopter carrier, at least one Iwo Jima-class ship was qualified to operate the American version of the Sea Harrier, according to the 1982 edition of Combat Fleets of the World.

CENTERFORSECURITYPOLICY: Center For Security Policy

The Royal Navy's largest ship, the helicopter carrier HMS Ocean, is moored in the Thames off Greenwich, where it will be a base for helicopter operations and house troops providing security at the Greenwich Park Olympic venue.

CNN: London's Olympic security headache

The Royal Navy's largest ship, the helicopter carrier HMS Ocean, is now moored in the Thames off Greenwich, where it will act as a base for helicopter operations and house 400 troops providing security at the Greenwich Park Olympic venue.

CNN: UK faces security questions ahead of London Olympics