.WHEN RUSSIA occupied in February 2022 Ukraine rarely possessed a naval force. The guardians scuttled their one frigate to stop Russia coming from seizing it. Two years later on Ukraine is actually struggling to hold off a Russian aggression on land-- but it is succeeding the battle in the Black Sea and also has cracked the Russian clog of its own surface ships. Its triumphes have actually usually relied on fast technical innovation: intermittent navy relies upon crewed ships to overcome, yet Ukraine has actually constructed a fleet of drone boats, or even uncrewed surface area motor vehicles (USVs). Just how are they forming the battle mixed-up?