.WHEN RUSSIA attacked in February 2022 Ukraine hardly had a navy. The guardians scuttled their one frigate to stop Russia coming from seizing it. Pair of years later Ukraine is battling to hold back a Russian aggression on land-- yet it is actually winning the battle in the Black Sea and also has actually damaged the Russian clog of its own grain ships. Its own victories have typically relied on quick technical technology: intermittent naval force depends on crewed ships to eliminate, yet Ukraine has actually built a fleet of drone boats, or even uncrewed surface area autos (USVs). Just how are they shaping the battle mixed-up?