"Saturation" divers stay down for days at a time because once their tissues are completely saturated with dissolved gasses, that's all they can hold. So once they've reached the "saturation" point, the "decompression" procedure is the same, regardless how much longer they stay down. From 200 feet (and once saturated), decompression will take three days, not an insignificant period of time.
So they lower a pressurized "diving bell" to their working depth. Since the "air" inside (which might be a mixed gas) is already at the same pressure as what they've been breathing, they can come and go as they please without further complicating or lengthening the decompression procedure to come. That way they can spend almost four weeks on the job (before physiological needs require them to surface) while only having to decompress the one time.
Pressure inside the diving bell @200 feet will be about 92 psi(g), 107 psi(a).
But for that time they're completely isolated because they can't escape to the surface and sending down rescue divers would complicate the logistics of decompression and put even more divers at risk. Which is why saturation diving is one of the riskiest (and highest-paid) manual labor professions.
“Everybody comes home...”...
..except from Afghanistan!
How many Americans, including servicemen, were abandoned by XiJinBiden and his band of globalist/fascists? Funny how the MSM have completely forgotten about these people! Have ANY gotten out? Do any remain alive in Afghanistan? Who knows?
How many Canadians were abandoned by Crime Minister Castreau and his band of globalist/communists, when the Ambassador abandoned Kabul, in the middle of the night, with no warning to the Canadians that remained, including apparently, members of CSOR?
Sorry, Stars and Stripes. While it is good to recover the bodies of WW2 vets, how about recovering ALIVE, CURRENT members of the US military, held in that sh&$hole that is Afghanistan? Same goes for Castreau’s Canaduh!
My pre-supposition has always been that sea water dissolves them or micro organisms eat them.
No.
leave them
I have seen too many people damaged in recovery operations
Not worth it.