What are merchant marines called now?

The individuals who serve in the U.S. Merchant Marine are referred to as 'merchant mariners.' These professionals operate and manage commercial vessels that transport goods and materials across the globe. While they are primarily civilians, their status changes during times of war, as outlined in the Merchant Marine Act of 1936, which designates them as military personnel. This unique dual status highlights the critical role that merchant mariners play in supporting national defense and commerce. As of 2009, the U.S. merchant fleet consisted of 422 ships, manned by approximately 69,000 merchant mariners, who are essential to maintaining the flow of trade and logistics in both peacetime and wartime scenarios.