.WHEN RUSSIA penetrated in February 2022 Ukraine scarcely had a navy. The defenders scuttled their one frigate to avoid Russia from appropriating it. Two years later on Ukraine is actually straining to hold back a Russian offensive on land-- however it is actually winning the war in the Black Ocean and has actually cracked the Russian blockade of its grain ships. Its victories have typically depended on swift technical innovation: intermittent naval force relies on crewed ships to eliminate, but Ukraine has actually created a fleet of drone boats, or uncrewed surface motor vehicles (USVs). Just how are they molding the war at sea?