两大兵种管交通美国的航运与港口管理体制是以国家安全第一的国防性集中性管理体制。美国有五大兵种,其中有两大兵种,海岸警备队和陆军工程兵,是专门用来管理航运的,其联邦运输部海运局也把国家安全及满足战争运输放在第一位。这两兵种对进出的船舶进行生产安全、国防安全、环 The two major arms traffic management The United States shipping and port management system is the national security first centralized national defense management system. The United States has five major branches, of which two are branches of the military, the Coast Guard and the Army Corps of Engineers, which are devoted to the management of shipping. The Federal Maritime Administration also pays the highest priority to national security and the transportation of war. These two arms carry out production safety, national defense safety and security on incoming and outgoing ships