Complex sentence: Heywood, stripped naked, was one of the last to get out of the cell; four prisoners, including Heywood's best friend George Stewart, were drowned, as were 31 of the regular crew.
Split into simpler sentences: Heywood, stripped naked, was one of the last to get out. Four prisoners, including Heywood's best friend George Stewart, were drowned, as were 31 of the regular crew.