Complex sentence: According to Knotts while on a ship in the South Pacific he took the dummy topside and tossed him overboard swearing he could hear the dummy calling for help as the ship sailed on leaving him bobbing helplessly in the waves.
Split into simpler sentences: According to Knotts, while on a ship in the South Pacific, he took the dummy topside and tossed him overboard. He swore he could hear the dummy calling for help as the ship sailed on, leaving him bobbing helplessly in the waves.