Complex sentence: Back aboard ship, Morton tries to return to his martinet ways, but Pulver has the goods on him now and convinces the captain to leave the ship, turning over command to the popular LaSeur (Gerald S. O'Loughlin).
Split into simpler sentences: Back aboard ship, Morton's natural tendencies resurface and he tries to return to his martinet ways. Morton takes his advice and departs, turning over command to the popular LaSeur (Gerald S. O'Loughlin).