.WHEN RUSSIA occupied in February 2022 Ukraine scarcely had a naval force. The protectors scuttled their one frigate to prevent Russia coming from seizing it. Two years eventually Ukraine is actually struggling to hold back a Russian aggression ashore-- yet it is gaining the war Sea as well as has cracked the Russian blockade of its own grain ships. Its triumphes have commonly depended on fast technological development: every other navy depends on crewed ships to fight, however Ukraine has built a fleet of drone watercrafts, or uncrewed surface vehicles (USVs). How are they shaping the battle mixed-up?