.WHEN RUSSIA invaded in February 2022 Ukraine rarely possessed a navy. The guardians scuttled their one frigate to prevent Russia coming from seizing it. Two years later on Ukraine is actually battling to hold back a Russian onslaught ashore-- but it is actually succeeding the battle Sea as well as has actually damaged the Russian blockade of its own grain ships. Its success have typically depended on quick technical advancement: intermittent naval force relies upon crewed ships to overcome, however Ukraine has actually built a fleet of drone watercrafts, or uncrewed surface area lorries (USVs). Just how are they molding the battle at sea?