Complex sentence: HMS "Anson" was a 64-gun third rate ship of the line of the Royal Navy, launched at Plymouth in 1781 by Georgina, Duchess of Devonshire.
Split into simpler sentences: HMS "Anson" was a third-rate 64-gun ship of the line of the Royal Navy. She was launched at Plymouth in 1781 by Georgina, Duchess of Devonshire.