.WHEN RUSSIA attacked in February 2022 Ukraine rarely possessed a naval force. The defenders scuttled their one frigate to avoid Russia from appropriating it. Two years later Ukraine is actually battling to hold off a Russian offensive on land-- but it is winning the battle Sea as well as has actually broken the Russian blockade of its own grain ships. Its triumphes have frequently depended on rapid technical technology: every other navy depends on crewed ships to fight, however Ukraine has built a fleet of drone watercrafts, or even uncrewed surface vehicles (USVs). How are they shaping the war at sea?