I believe that is the plunge pool for the sauna: https://englishrussia.com/2014/...

		twic on Oct 31, 2020 \| parent \| context \| favorite \| on: Photos from inside a Typhoon class submarine I believe that is the plunge pool for the sauna: https://englishrussia.com/2014/10/26/sauna-in-the-submarine/ https://www.youtube.com/watch?v=JrULRXlAlMU