Complex sentence: Christopher Heyes, Tracey Luke, Peter McLeod, Ann-Maree Pope all perished, with the body of Christopher Heyes being found onboard the upturned hull and the bodies of Tracey Luke, Peter McLeod, Ann-Maree Pope lost at sea.
Split into simpler sentences: Christopher Heyes, Tracey Luke, Peter McLeod, Ann-Maree Pope. All died, with the body of Christopher Heyes being found onboard the upturned hull and the bodies of Tracey Luke, Peter McLeod, Ann-Maree Pope lost at sea.