To determine the U.S. Navy's newest warships, 24/7 Wall St. reviewed the military data site World Directory of Modern Military Warships' directory of all active ships in the U.S. and cross-referenced with data from the Naval Vessel Register. We compiled data on all ships and submarines - 27 in total - that have been commissioned in the service of the U.S. Navy in the past five years and ranked them by age. It should be noted that this list is current as of September 2025.