The United States Department of Transportation Maritime Administration (MARAD) believes they may have seen the first documented use of GPS …

http://www.futuresciencenews.com/2017-09-05-breakthrough-russia-military-tech-used-gps-spoofing-to-cause-ships-to-sail-off-course.html

Without question the U.S. Navy is the most power nautical force in the world, combining state-of-the-art technology with unrivaled firepower. …

http://www.futuresciencenews.com/2017-08-22-navy-brass-not-ruling-out-cyber-attacks-in-string-of-warship-incidents-and-collisions-involving-7th-fleet.html