.WHEN RUSSIA invaded in February 2022 Ukraine barely possessed a navy. The protectors scuttled their one frigate to prevent Russia from appropriating it. 2 years later on Ukraine is having a hard time to keep back a Russian aggression on land-- but it is gaining the war in the Black Ocean and has broken the Russian clog of its grain ships. Its own triumphes have actually typically relied on fast technical development: every other navy depends on crewed ships to fight, yet Ukraine has created a fleet of drone watercrafts, or even uncrewed surface automobiles (USVs). Exactly how are they forming the battle mixed-up?