 Many more sailors were digitally added on board the ship, and others were digitally replaced for complex shots.When the time came to film the "Edinburgh Trader" being broken in half, two massive pipes were filled with 30,000 pounds of cement for a total of 60,000 pounds and crushed down onto the set.To prepare for this event, most metal and the masts were removed, because the metal would prevent the ship from satisfyingly breaking in half while the masts would prevent better camera close-ups.