It’s a R&D facility.
I think that the Royal Navy had a very deep pool for training Submariners, probably at Portsmouth but cannot recall the details.
The chamber at Jarrow simulates the pressure at 50 mtrs but there is no water in it. Those in it at those depths find the distortion of their voices and other effects on physical ability. No doubt they try various gas mixes like tri mix etc.
These various gas mixtures can cause temperature loss and other things and no doubt they experience them.
I doubt that any Police will actually dive to those depths as they will not have the equipment to do so and carry out any operations.
The equipment required to dive to those depths and WORK requires a support vessel. I would thing they would call on the Navy and then specialist contractors
Yes they can dive to those depths but only as a train sports diver would do.
The deepest that I ever dived to is about 45 mtrs in Scapa Flow on the wreck of the WW1 German Fleet.
That was really only a bounce dive to see the amidships Gun Turret of the Markgraf. The deck was at 45 Mtrs (upside down)the Gun cap another 3-5 mtrs deeper. Probably resting on the seabed.
I think it was too dark to really see it as very dark under wreck.
To stay more than a few minutes at that depth would mean a long Decompression Stop and it was too risky as if a problem it could end up in a helicopter trip to Aberdeen or at worst a wooden box.
We had one lad taken to Aberdeen by Helicopter as he had trouble with a loose weight belt and surfaced too fast and suffered a type of bend. I cannot remember if he lost it or what.
Fortunately he was diving in a threesome and one of the others was a diving instructor and the other a hospital doctor.
Thank goodness he was OK, I was driving his car on that trip!
In any case you require ba lot of “Air” to go to those depths and unless you had a big Twin Set say 2 90’s you would not try it.
Those Twin sets very heavy and back then we had to climb about 4-5 metres up a ladder which could cause a bend type thing.
These days even the dive boats out of Seahouses have lifts.
I know that I am out of date with the gear and dive tables but I often see diver loaded to the gills with gear and think stuff that for a bunch of soldiers.
Allan C.
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