.WHEN RUSSIA invaded in February 2022 Ukraine scarcely possessed a navy. The protectors scuttled their one frigate to prevent Russia coming from seizing it. Two years later on Ukraine is battling to hold back a Russian onslaught on land-- but it is actually gaining the war in the Black Sea as well as has actually cracked the Russian blockade of its surface ships. Its triumphes have actually commonly depended on fast technological technology: every other naval force relies upon crewed ships to fight, yet Ukraine has actually constructed a line of drone watercrafts, or uncrewed surface cars (USVs). How are they forming the war at sea?