.WHEN RUSSIA got into in February 2022 Ukraine rarely possessed a navy. The defenders scuttled their one frigate to stop Russia from seizing it. 2 years later Ukraine is straining to hold back a Russian offensive ashore-- yet it is actually succeeding the war in the Black Sea and also has damaged the Russian blockade of its grain ships. Its success have frequently depended upon quick technical advancement: intermittent navy depends on crewed ships to eliminate, yet Ukraine has developed a line of drone watercrafts, or even uncrewed area vehicles (USVs). Just how are they shaping the battle mixed-up?