.WHEN RUSSIA occupied in February 2022 Ukraine scarcely possessed a naval force. The protectors scuttled their one frigate to avoid Russia from seizing it. 2 years later Ukraine is struggling to keep back a Russian offensive on land-- yet it is actually winning the battle Sea and has actually broken the Russian blockade of its grain ships. Its own victories have actually commonly depended on quick technical advancement: every other naval force relies on crewed ships to combat, yet Ukraine has constructed a line of drone watercrafts, or even uncrewed area cars (USVs). Just how are they forming the battle mixed-up?