.WHEN RUSSIA invaded in February 2022 Ukraine barely possessed a navy. The defenders scuttled their one frigate to avoid Russia coming from seizing it. Pair of years later Ukraine is actually having a hard time to keep back a Russian offensive on land-- but it is succeeding the war Sea and has broken the Russian clog of its own grain ships. Its victories have often depended upon swift technical advancement: intermittent navy relies on crewed ships to overcome, yet Ukraine has constructed a squadron of drone boats, or uncrewed surface automobiles (USVs). Exactly how are they molding the battle mixed-up?