Complex sentence: The Americans then raised their colors and beat to quarters, to ensure that none of his men desert to the deck below, Captain Diron ordered all the hatches closed after all the ammunition, water and grappling hooks were brough topside.
Split into simpler sentences: The Americans then raised their colors and beat to quarters. To ensure that none of his men desert to the deck below, Captain Diron ordered all the hatches closed after all the ammunition, water and grappling hooks were brough topside.