.WHEN RUSSIA penetrated in February 2022 Ukraine barely had a navy. The defenders scuttled their one frigate to avoid Russia from seizing it. Two years later on Ukraine is struggling to hold off a Russian offensive on land-- yet it is actually succeeding the battle in the Black Sea and also has broken the Russian clog of its own grain ships. Its success have actually typically depended upon rapid technological technology: every other naval force depends on crewed ships to fight, yet Ukraine has actually developed a squadron of drone watercrafts, or uncrewed surface cars (USVs). Exactly how are they molding the battle at sea?