.WHEN RUSSIA invaded in February 2022 Ukraine hardly possessed a naval force. The defenders scuttled their one frigate to prevent Russia from appropriating it. 2 years eventually Ukraine is having a hard time to keep back a Russian aggression on land-- however it is gaining the battle in the Black Ocean as well as has actually cracked the Russian blockade of its grain ships. Its own triumphes have typically depended on swift technical development: intermittent navy relies upon crewed ships to combat, however Ukraine has actually developed a line of drone watercrafts, or even uncrewed surface area lorries (USVs). Just how are they forming the battle mixed-up?