Complex sentence: She was laid down in 1973, launched on 3 May 1977 and commissioned on 11 July 1980, whereafter she joined the fleet's other carriers "Hermes" and in service.
Split into simpler sentences: She was laid down in 1973 and launched on 3 May 1977. On 11 July 1980 she was commissioned and joined the fleet's other carriers "Hermes" and in service.