The naval base in Tartus is the only such facility Russia has outside the former Soviet Union. In 2017, Moscow struck a deal with Syrian President Bashar Assad to extend its lease on Tartus for 49 years. The agreement allows Russia to keep up to 11 warships there, including nuclear-powered ones.
Using Google Maps we can see in the naval base of Tartus different Russian warships.
Zooming in the image we can see also two Russain submarines, two diesel-electric submarines of the Project 636.3 Varshavyanka class (variants of the Kilo) units.
In this photo we can see better the two ships (near a guided-missile corvette Veliky Ustyug).