Complex sentence: HMY "Britannia" was built at the shipyard of John Brown & Co. Ltd in Clydebank, West Dunbartonshire, Great Britain, being launched by Queen Elizabeth II on 16 April 1953, and commissioned on 11 January 1954.
Split into simpler sentences: HMY "Britannia" was built at the shipyard of John Brown & Co. Ltd in Clydebank, West Dunbartonshire. It was launched by Queen Elizabeth II on 16 April 1953, and commissioned on 11 January 1954.