.WHEN RUSSIA invaded in February 2022 Ukraine scarcely possessed a navy. The defenders scuttled their one frigate to stop Russia from appropriating it. Pair of years later on Ukraine is having a hard time to hold back a Russian aggression on land-- yet it is winning the battle Sea and has cracked the Russian clog of its own surface ships. Its own victories have often depended on quick technical development: every other navy relies upon crewed ships to overcome, yet Ukraine has actually created a line of drone watercrafts, or even uncrewed area vehicles (USVs). How are they molding the war mixed-up?