Military units similar to or like United States Navy

The United States Armed Forces are the military forces of the United States of America. It consists of the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. Wikipedia

Maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through combined arms, implementing its own infantry, armor, artillery, aerial and special operations forces. One of the eight uniformed services of the United States. Wikipedia

Maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. Maritime, military, multi-mission service unique among the U.S. military branches for having a maritime law enforcement mission with jurisdiction in both domestic and international waters and a federal regulatory agency mission as part of its duties. Wikipedia

Air service branch of the United States Armed Forces. One of the eight U.S. uniformed services. Wikipedia

Land service branch of the United States Armed Forces. One of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution. Wikipedia

The names of commissioned ships of the United States Navy all start with USS, for United States Ship. Non-commissioned, primarily civilian-manned vessels of the U.S. Navy under the Military Sealift Command have names that begin with USNS, standing for United States Naval Ship. Wikipedia