President Zelensky has described seaborne drones as Ukraine’s “eyes and safety on the frontline”, with claims of a collection of profitable strikes towards Russian ships within the Black Sea and on a key bridge to Crimea.
These remote-controlled gadgets are enjoying an more and more outstanding position, with either side ramping up their use for assaults and reconnaissance.
The BBC’s Safety Correspondent Frank Gardner and BBC Confirm study their affect on the battle.
Manufacturing: Soraya Auer
Movement Graphics: Jacqueline Galvin
Verification: Tom Spencer, Paul Brown, Emma Pengelly, Richard Irvine-Brown