Yantar

Yantar is a Russian special purpose intelligence collection ship operated by the Russian Navy's Main Directorate of Underwater Research since 2015. It is the lead ship of the Project 22010 class, with a length of 108 meters and a full displacement of 5,736 tons. The ship can act as a mothership to mini-subs, including the Rus-class and Konsul-class submersibles, capable of operating at depths of up to 6,000 meters. Yantar has been reported in position near undersea telecommunications cables and has been involved in various activities, including searching for the Argentine submarine ARA San Juan and monitoring undersea cables in the Mediterranean.learn more on wikipedia