[FPSPACE] Soviet underwater EVA training preceding Star City Hydrolab?

[John Charles]

The recent NOVA program, "Astrospies," illustrated Soviet preparations
for the Almaz military reconnaissance missions with several scenes of
cosmonauts practicing EVA maneuvers underwater.  I originally believed
that they were stock scenes from the Hydrolab at Star City, which
according to my notes was opened in 1980, and thus could not have
included Almaz-related activities.  (The last military crew, on Soyuz
24, flew the last Almaz mission on Salyut 5, in 1977.)

But, someone who knows more about it than me thought that the footage
really did show Almaz-related underwater training for loading the KSI
film return capsule for return to Earth.  He identified the KSI
mockup, the round frame representing the airlock section of Almaz and
the round section at the top for the crew EVA hatch.

Does anyone know more about Soviet pre-Hydrolab underwater EVA (or
IVA) training?  I am esp interested in dates and locations.

John Charles
Houston, Texas