.WHEN RUSSIA invaded in February 2022 Ukraine barely possessed a naval force. The protectors scuttled their one frigate to prevent Russia from seizing it. Two years later Ukraine is struggling to hold back a Russian aggression on land-- but it is gaining the war in the Black Ocean as well as has damaged the Russian blockade of its own grain ships. Its victories have often depended on quick technological technology: every other naval force relies on crewed ships to combat, but Ukraine has actually developed a line of drone boats, or uncrewed surface autos (USVs). Just how are they forming the war at sea?