.WHEN RUSSIA invaded in February 2022 Ukraine rarely had a navy. The defenders scuttled their one frigate to avoid Russia coming from seizing it. 2 years later on Ukraine is actually straining to keep back a Russian offensive ashore-- but it is succeeding the war in the Black Ocean and also has broken the Russian blockade of its grain ships. Its own success have often depended on swift technological development: intermittent naval force relies upon crewed ships to overcome, however Ukraine has constructed a fleet of drone watercrafts, or even uncrewed surface lorries (USVs). Exactly how are they forming the war mixed-up?