Sea drones are small, unmanned vessels. Unlike aerial drones, these ones operate on or below the water’s surface. These drones can be used for military purposes too – like clearing mines, carrying out surveillance or detonating near targets like enemy ships. Common sea drone features include built-in explosives and cameras which beam back images to the person controlling it. Long-range targets are typically pre-programmed into the drones when launched. A Russian tanker has been hit in a Ukrainian attack in the Black Sea. On 4 August, Russia said it had repelled an attack by this type of drone on one of its naval bases in the region. While aerial drones have been used to great effect during the conflict, this new form of seaborne technology has been gaining momentum, Ukraine’s deployment of sea drones, at relatively low cost, marks a new era for naval warfare. The tactic poses an increasing risk to Russia. How effective are the Ukrainian sea drones against Russian vessels ?

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