Talk:Saturation diving

Hi all. Complete outsider to this subject but stumbled onto it while looking for information.

The introduction is kinda.....odd. It describes the practice (diving for periods long enough to allow complete equilibration of gases in the body) but the reason provided doesn't seem to match ("reduce the total time spent undergoing decompression").

My understanding, correct me if I'm wrong, is that the point of saturation diving (combined with underwater habitats) is to reduce the number of decompressions that divers would need to go through for time efficiency and safety. Essentially, why bother compressing/decompressing the divers after each dive when you could just have them rest in a compressed environment between work shifts and only compress/decompress them at the beginning and end of the job

If so, I'd like to rewrite the intro paragraph a bit to reflect that.

Saturation diving is diving for periods long enough to bring all tissues into equilibrium with the partial pressures of the inert components of the breathing gas used. It is a diving technique that reduces the number of decompressions divers working at great depths must undergo by only decompressing divers once at the end, having them remain under pressure for the extent of the diving operation (which may last days to weeks). A diver breathing pressurized gas accumulates dissolved inert gas (used in the mixture to dilute the oxygen to a non-toxic level in their tissues) which can cause decompression sickness ("the bends") if permitted to come out of solution within the body tissues; hence, returning to the surface safely requires lengthy decompression so that the inert gases can be eliminated via the lungs. Once the dissolved gases in a diver's tissues reach the saturation point, however, decompression time does not increase with further exposure, as no more inert gas is accumulated.^[1][2]

Saturation diving takes advantage of this by having divers remain in that saturated state. When not in the water, the divers live in a sealed environment which maintains their pressurised state; this can be an ambient pressure underwater habitat or a saturation system on the surface (with transfer to and from the pressurised living quarters to the equivalent depth underwater via a closed, pressurised diving bell). This may be maintained for up to several weeks, and divers are decompressed to surface pressure only once, at the end of their tour of duty. By limiting the number of decompressions in this way, the risk of decompression sickness is significantly reduced, and the total time spent decompressing is minimised. Saturation divers typically breathe a helium–oxygen mixture to prevent nitrogen narcosis, but at shallow depths saturation diving has been done on nitrox mixtures.

Saturation diving is a very specialized form of diving; of the 3,300 commercial divers employed in the United States in 2015,^[3] only 336 were saturation divers.^[4]

Thoughts on this? — Preceding unsigned comment added by Jasonkwe (talk • contribs) 18:21, 28 May 2022 (UTC)

Jasonkwe, your comments are relevant and your suggestion looks appropriate. I will compare your suggested text to the existing text and probably make the edit, or something similar. Cheers, · · · Peter Southwood ^(talk): 18:45, 9 February 2024 (UTC)

From what I can see it has been done already.· · · Peter Southwood ^(talk): 12:37, 10 February 2024 (UTC)

I forgot about this and had to look back thru edits. Apparently I had posted this and then waited about a month. Since there were no objections, I made the revisions.

Thanks for getting back to me though. I have absolutely zero experience in the field so I wanted to make sure I wasn't misunderstanding things! Jasonkwe (talk) (contribs) 17:05, 10 February 2024 (UTC)

(Pinging @Pbsouthwood as GA nominator.) I don't have the time at the moment to commit to doing a full GAN review, so apologies for that, but I do have a couple of feedback points that will almost certainly be raised when a reviewer does take up the review.

The main thing is that the article in its current state is too long. Prosesize has it at over 15,000 words, and that's not including bulleted lists etc. The lead alone is ~500 words, and could maybe do with being cut down per MOS:LEADLENGTH. § Architecture of a surface saturation facility and § Auxiliary and support equipment feel especially long, and could probably do with being split into a separate article, for instance at Saturation diving system (or a more appropriate name; I'm not sure what the best option would be, or what the WP:COMMONNAME is). There are a few other sections with {{See also}} and {{Further}} hatnotes; could any of these sections be condensed if they cover content that's already in other articles?

There seem to be some statements in the lead that aren't repeated in the body: for instance, Saturation diving is a specialized mode of diving; of the 3,300 commercial divers employed in the United States in 2015, 336 were saturation divers. (This also happens to be a potential WP:SYNTH issue; using employment statistics, especially from two different datasets, to draw the conclusion that a certain type of diving is more specialised feels like synthesis to me. I think it's worth trying to find a source that explicitly states that it's a specialised niche, as I'm sure one exists somewhere.) Per MOS:LEADNOTUNIQUE, generally information that's in the lead should also be integrated later in the article. There are also quite a few citations in the lead; per MOS:LEADCITE, it might be worth removing any that are repeated in the body and aren't strictly necessary.

These are just a couple of points. Apologies again for not being able to take on the full review! Pineapple Storage (talk) 19:21, 8 September 2025 (UTC)

Thanks for taking the trouble to make these comments and suggestions, I will look into what I can reasonably do to improve matters, but I will not be removing citations from the lead, as a lead may be used as the basis for a summary section in another article, at which stage the citations become mandatory, and it is much easier to find them when they are already there. Cheers, · · · Peter Southwood ^(talk): 06:50, 9 September 2025 (UTC)

No problem at all! And fair enough, that wasn't something I had considered re WP:LEADCITE. Best of luck with the GA nomination! :) Pineapple Storage (talk) 08:48, 9 September 2025 (UTC)

Maybe you underestimate the value of a fresh pair of eyes looking at an article. It really helps. I think I will split roughly as you suggested, keeping the operational content here and splitting out the equipment side to Saturation diving system, which may well be the best title, and can be changes if someone thinks of a better one. I have done this often enough before, like Rebreather diving (the mode of diving) had Diving rebreather (the defining equipment) split out. The final size of Saturation diving will still be large, but it should be better balanced. · · · Peter Southwood ^(talk): 09:29, 9 September 2025 (UTC)

For sure, I know from personal experience that after spending a long time saturated^[1] in a topic and all the literature about it, it's difficult to see the wood for the trees when it comes to making improvements to the article, so I'm always happy to help out with feedback—again, I'm just sorry I can't commit to a full GA review at the moment. Hopefully you won't have to wait too long for someone to take it on!

Yes, Rebreather diving/Diving rebreather seems like a sensible split, so I think a similar format should work well with this topic too. Pineapple Storage (talk) 09:48, 9 September 2025 (UTC) Pineapple Storage (talk) 09:48, 9 September 2025 (UTC)

The basic split has been done. Now I mainly need to sort out the summary section to make sure I haven't left out too much. Cheers · · · Peter Southwood ^(talk): 03:25, 10 September 2025 (UTC)

Split is basically done. Prose size reduced by about a third according to section sizes template · · · Peter Southwood ^(talk): 07:40, 10 September 2025 (UTC)

Awesome, both articles are looking great! :) Pineapple Storage (talk) 15:24, 10 September 2025 (UTC)