USMM - Supporting America T-Shirt

The United States Merchant Marine refers to either United States civilian mariners or to a fleet of U.S. civilian and federally owned merchant vessels. These fleets are managed by either the government or private sector, and engage in commerce or transportation of goods and services in and out of the navigable waters of the United States. The Merchant Marine is responsible for transporting cargo and passengers during peacetime. In times of war, they can be an auxiliary to the United States Navy, and can be called upon to deliver military personnel and materiel for the military. Merchant Marine Officers may also be designated as Military Officers by the Department of Defense. This is commonly achieved by commissioning unlimited tonna...