.WHEN RUSSIA occupied in February 2022 Ukraine scarcely possessed a navy. The protectors scuttled their one frigate to prevent Russia from seizing it. Two years eventually Ukraine is battling to hold back a Russian offensive on land-- but it is actually gaining the battle in the Black Ocean and has cracked the Russian blockade of its surface ships. Its triumphes have typically depended on fast technical advancement: intermittent naval force depends on crewed ships to eliminate, however Ukraine has actually built a fleet of drone boats, or even uncrewed surface automobiles (USVs). Exactly how are they shaping the war at sea?