Is Yamsk 11 based on a real life location? The Full Metal Panic series is known to reference various real life location.

For an example the fictional Jindai (陣代) High School is based on the real life Jindai (神代) High School in Choufu, Tokyo.

The closest station to the real life Jindai High School is the Senkawa station, changed from 仙川 to 泉川 (Izumikawa).

Is Yamsk 11 based on a real life location? If so where is the real like location of Yamsk 11, the secret city where the Omni-Sphere known as TAROS resides?
According to the Russian Full Metal Panic wiki's Yamsk-11 article (Янск-11, see reference), it says that Yamsk-11 is here: 60° 8' 10.66" N 153° 54' 20.60" E (East Siberia). "Yamsk-11" is not the name of the city, but a postal code for mail delivery. There is a city, Yamsk, 63 km to the south of "Yamsk-11". It was common practice in USSR to give a postal code name with a number for closed towns. Apparently, there was a town at those coordinates that's been closed. For another example of this, see Wikipedia's page for Arzamas-16 or Chelyabinsk-65/40.

So looks like there is a real location but not sure if it has anything in common with the fictional "Yamsk 11" in FMP (but who knows), and the name "Yamsk 11" is a postal code from the USSR days.