Complex sentence: The submarine was laid down by Vickers Shipbuilding and Engineering Ltd (VSEL) in February 1983, launched on 2 December 1986, and commissioned into the Royal Navy on 7 December 1990.
Split into simpler sentences: The submarine was laid down by Vickers Shipbuilding and Engineering Ltd (VSEL) in February 1983 and launched on 2 December 1986. During construction, work on the submarine was delayed due to a labour strike "Upholder" commissioned into the Royal Navy on 7 December 1990.