Complex sentence: HMS "Tamar" was a 4,650 tons troopship was launched in Britain in 1863 that had been hulked as a base ship and was dispatched to Hong Kong in 1897.
Split into simpler sentences: HMS "Tamar" was a 4,650 ton troopship launched in Britain in 1863. She had been hulked as a base ship and was dispatched to Hong Kong in 1897.