.WHEN RUSSIA occupied in February 2022 Ukraine scarcely had a navy. The defenders scuttled their one frigate to avoid Russia from seizing it. Two years later Ukraine is actually having a hard time to hold back a Russian onslaught ashore-- however it is actually winning the battle Ocean and has actually damaged the Russian blockade of its own grain ships. Its own triumphes have actually frequently depended upon quick technical technology: intermittent navy depends on crewed ships to overcome, but Ukraine has built a squadron of drone watercrafts, or uncrewed surface autos (USVs). Just how are they molding the battle at sea?