.WHEN RUSSIA invaded in February 2022 Ukraine rarely had a navy. The protectors scuttled their one frigate to stop Russia from appropriating it. Pair of years later Ukraine is battling to hold back a Russian aggression ashore-- but it is actually gaining the war Sea and has actually broken the Russian clog of its grain ships. Its triumphes have actually often relied on swift technological technology: intermittent naval force depends on crewed ships to eliminate, yet Ukraine has built a squadron of drone watercrafts, or uncrewed area vehicles (USVs). How are they forming the war mixed-up?