.WHEN RUSSIA invaded in February 2022 Ukraine scarcely had a naval force. The defenders scuttled their one frigate to stop Russia from appropriating it. Pair of years eventually Ukraine is struggling to hold back a Russian offensive on land-- yet it is actually gaining the battle Ocean and also has actually broken the Russian blockade of its surface ships. Its own victories have typically relied on swift technical advancement: intermittent naval force relies on crewed ships to eliminate, but Ukraine has actually constructed a squadron of drone boats, or uncrewed surface motor vehicles (USVs). Exactly how are they shaping the battle mixed-up?