.WHEN RUSSIA occupied in February 2022 Ukraine barely had a navy. The defenders scuttled their one frigate to avoid Russia from appropriating it. 2 years later Ukraine is actually straining to hold back a Russian onslaught ashore-- yet it is winning the war Sea and has actually cracked the Russian clog of its grain ships. Its own victories have actually often relied on rapid technological advancement: intermittent navy counts on crewed ships to eliminate, yet Ukraine has developed a line of drone watercrafts, or uncrewed surface area vehicles (USVs). How are they molding the battle mixed-up?