"HMS Invincible 1980 - 2000" HMS INVINCIBLE and HMS ARK ROYAL at sea in the Adriatic during Operation GRAPPLE, the British military deployment in support of the United Nations Peace Keeping Force in Bosnia (UNPROFOR). INVINCIBLE sailed for the Adriatic on 22 July 1993 to relieve HMS ARK ROYAL. She remained in theatre until 20 December, with No 800, 814, 846 and 849A Naval Air Squadrons embarked. On 20 September 1993, the Ship hosted unsuccessful Warring Parties Peace Talks, involving Lord Owen and Mr Stoltenborg.