.WHEN RUSSIA attacked in February 2022 Ukraine scarcely possessed a naval force. The guardians scuttled their one frigate to prevent Russia from seizing it. Two years later on Ukraine is having a hard time to hold back a Russian onslaught on land-- but it is actually winning the battle in the Black Sea and also has cracked the Russian blockade of its surface ships. Its triumphes have typically depended on quick technological advancement: every other navy relies upon crewed ships to combat, but Ukraine has built a squadron of drone watercrafts, or even uncrewed surface area cars (USVs). How are they shaping the battle at sea?