.WHEN RUSSIA occupied in February 2022 Ukraine rarely possessed a navy. The defenders scuttled their one frigate to stop Russia from appropriating it. Two years later on Ukraine is actually struggling to hold off a Russian offensive on land-- yet it is winning the battle in the Black Ocean and has actually broken the Russian blockade of its own surface ships. Its success have actually often relied on fast technical innovation: intermittent navy counts on crewed ships to eliminate, but Ukraine has built a line of drone boats, or even uncrewed surface area motor vehicles (USVs). How are they molding the war at sea?