.WHEN RUSSIA penetrated in February 2022 Ukraine scarcely had a navy. The guardians scuttled their one frigate to stop Russia from appropriating it. 2 years later on Ukraine is having a hard time to hold off a Russian aggression on land-- yet it is actually winning the war in the Black Ocean as well as has damaged the Russian blockade of its grain ships. Its success have typically depended on fast technical innovation: intermittent naval force depends on crewed ships to eliminate, yet Ukraine has constructed a squadron of drone watercrafts, or even uncrewed area autos (USVs). How are they shaping the battle at sea?