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Many countries do not have ready access to satellite imagery, much less realtime satellite imagery. Iran, for example.
Anyone with a big enough checkbook can rent 12 50 centimeter resolution overflights a day from Planet Labs. Their 1.3m resolution is maybe enough to track it in decently cooperative weather given enough compute spend.

https://www.planet.com/pulse/12x-rapid-revisit-announcement/

Iran is being fed intelligence by Russia, so they definitely have that info.
okay, imagine a different example which you don't think is being fed intelligence by russia
Everyone capable of damaging the ships can get that intelligence.