Toloka TLK-150

Ukraine's small semi-submersible underwater strike drone, designed to approach targets with its hull submerged and only a slim sensor-and-communications mast exposed.

Overview

The Toloka TLK-150 is the smallest publicly described member of Ukraine's Toloka underwater-drone family. It is a compact uncrewed underwater vehicle (UUV) intended for one-way maritime strike missions against ships below the waterline, especially in the Black Sea context created by Russia's full-scale invasion of Ukraine. The design's defining feature is not deep-diving endurance but low surface signature: the hull runs submerged while a narrow mast carries navigation, sensor and communications elements.

Open-source reporting identifies the TLK-150 as Ukraine's first publicly disclosed indigenous UUV design. H I Sutton's 2023 Naval News profile described it as a new Ukrainian underwater weapon concept aimed at Russian Navy vessels, while later Ukrainian defense reporting treated it as part of a broader Toloka family that also includes larger TLK-400 and TLK-1000 designs. No source in the available public record confirms that the TLK-150 has entered Ukrainian Navy service, received a production order, or been used in combat.

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