In a decisive moment, Nathan resolved to confront Captain Jack alone. He believed that by wearing the captain’s uniform and facing the pirates head-on, he could convince them to follow him to the trap. This would give him the opportunity to neutralize them from within.
The plan was undeniably risky, but Nathan had faced life-and-death situations before. As a soldier, he was trained for moments like this. He wasn’t about to let innocent passengers and crew come to harm under his watch.