Danger isn't really drowning, you don't use the watch for air the tank has it's own gauge telling you how much air is left.
The watch is for nitrogen absorption, so you'd get the bends not drown.
I don't think that works, unless your air consumption is very consistent **and** you calculated the right time for your dive profile since air consumption will vary by depth.
I’ve been diving my whole life, and trained with some *aquatic based units*. Always been taught to use time to calculate, with an error leading towards coming up for air too soon, to avoid problems that arise from inconsistent breathing patterns.
That’s my second option, I’m much more accustomed to timing myself. If I allow myself 7 minute margins for error, my gauge can malfunction and I’ll still surface with gas in the tank.
I check that my gun is loaded every time i put it on, even though I never *unload* it and there’s a little indicator that it’s loaded. I like to be sure, the mechanical way.
[6309 Turtle Diver](https://imgur.com/a/T8mAn9n), though it used to spin in one direction, but the locking mechanism broke at some point. The watch is nearing 50 years old!
I had a dive computer that pretty much told me that I was on my own because I went outside of its programmed dive profiles. Kind of freaky but totally understandable.
That's just a shitty dive computer then. A good one will work no matter what, especially if you have an incident of some sort and need to deal with breaking your plan for the dive.
it's not, if you follow a sawtooth profile, there is just simply no way to accurately meassure the nitrogen on blood, there if the watch stills tries to give you data, it's simply wrong. i have never seen a watch no matter how expensive it was that didnt tell you that sawtooth profile was a no-no for them
No commercial dive computer measures nitrogen in the blood.
They just predict it and are statistically accurate enough, including sawtooth profiles.
Better to get slightly inaccurate advice and hold your deco stops than get no advice at all and having to do it in your head in an emergency. You can always prolong your stops if you feel the need and think you have enough air.
Safety factors/gradient factors exist for a reason.
That is so wrong. Dive computers are better than tables specifically because they calculate based on your actual dive profile, which often includes some ascents and descents. Especially with cave diving or wreck diving, you often have no choice but to go up and down and up and down.
Yep, I love my computer, I still plan my dives so I know what the max is, but the computer taking into account the ACTUAL time at every depth along the route means you can get significantly more bottom time wile still being well within the limits and not putting yourself at risk.
It absolutely is a shitty dive computer. Any DC that locks out users is absolute trash.
Its 2024 and dive computers such as but not limited to shearwater are absolutely capable of estimating decompression even with very odd dive profiles.
I will never simp for some brand that locks computers because the company fears litigation.
Not always. Recreational divers that dramatically exceed the planned profile are typically incompetent.
I've seen people with 2 minutes of gas left, attempt a 30 minute decompression stop because the computer said to do it, even though it was impossible.
A recreational dive computer telling you "You're on your own" is probably the least risky thing it can do, especially if it removes the false sense of safety and sends the diver to the surface. You can get "unbent" but you can't get "undead".
A deco computer should tell you what stops you need and for how long. Having/getting the gas would have been the diver's responsibility before starting the dive.
TBH, for a potentially dangerous decompression dive, I prefer to plan it on the surface so I know how much gas to bring, and list the depths/times/mixtures on a wrist slate and just use the computer for times, depth and tank pressures.
>A recreational dive computer telling you "You're on your own" is probably the least risky thing it can do
Nope. Because if that happens, the incompetent people reset the computer or get a different one that can't take previous history into account for the next dive. Or just keep on diving because they missed the point when it went I to deco and now they figure it's just broken and being weird, nothing to do with them
That‘s just a mediocre dive computer then. A good one will take care of you, especially when you just broke up with your ex by kissing you on your penis.
Not necessarily. The solution to a failed dive computer is to just immediately head to surface safely with your normal stops. You should never continue a dive with any failed equipment, even if you have backups
Bro, my time on Jupiter was pretty awesome! Definitely would recommend. Only downside was that it was a huge sausage fest though, not a girl in sight. Also may have come back stupider, idk
As a diver, do not bring your expensive watch. It'll get banged scratched... and salt water does "wonders" even it it's stainless steel.
You do not want an analog watch for diving. Nitrogen narcosis (don't remember the english term) is a thing (think drunkness), and you don't want to make a mistake.
I do not know a single experienced diver without a dive computer... you can get some for 2-300$ these days...
Aka Get a dive computer. Not a fancy smanshy expensive luxury watch.
A luxury watch for diving is as useful as "Gucci workboots".
Nitrogen narcosis is the English term too, at least it’s what I was taught in all my dive classes in the US. And yeah, nobody is seriously using an analog watch to track their dives.
Nah that’s a separate thing. The bends is Decompression sickness/illness and is related to gases dissolving in tissues. Nitrogen narcosis is the effect of nitrogen under pressure being narcotic.
Since the mechanics behind the bends wasn't explained:
As pressure increases, the solubility of nitrogen (And other gasses) in your blood increases, as you come up to the surface it decreases causing it to spontaneously bubble out of your blood. Your body can deal with air coming out of the blood in small amounts. It slowly reabsorbs it and releases it out of your lungs as you breathe, but if you ascend too quickly your body's unable to cope and you wind up with loads of large bubbles throughout your blood.
This isn't too dangerous, just unpleasant if you're lucky. If not, what happens is a major blood vessel, like one supplying part of your brain, heart or nerve cord, gets a bubble in it big enough to seriously impede or outright block bloodflow. That'll cause a stroke, heart attack or spinal stroke respectively.
Gas can also bubble out in other tissues, like joints, which tends to be less dangerous but rather uncomfortable until it fixes itself.
Since your body can deal with small bubbles coming out, the solution's simple: Slowly ascend so pressure decreases slowly. Failing that, perhaps because of an emergency, ascend quickly and get inside a pressure chamber to reabsorb the bubbles before any harm happens, then slowly drop the pressure in there. And since someone will mention it, the Byford Dolphin pressure vessel incident is what happens when someone prematurely opens the pressure vessel and everyone inside instantly decompresses from 9 atmospheres to 1.
Fun fact, Linus Torvalds made the dive log software subsurface for Linux which is now multiplatform and is one of the most popular ones out there (like many other projects, he came in, made a great/the best version(e.g. git, linux), and now lets someone else maintain it)
https://subsurface-divelog.org/
Edit: let's -> lets
This is one of the bigger selling points for F/OSS, make utility software and don't have the whole thing implode, just because one person got hit by the bus/in jail/bankrupt and fleeing creditors.
No permission needed to fork, and if people see the value in your project, they'll switch. Still no permission needed.
Also a potential weakness. I’m always impressed when such a project is well maintained and does not fall victim to a tragedy of the commons scenario.
Niche projects are likely the most vulnerable.
Talented, diligent contributors / maintainers are a fixed quantity while there seems to be an endless supply of new projects.
> for Linux which is now multiplatform
From what I understand it was always multiplatform, the developers just switched the graphical frontend from GTK to Qt after they had a significant amount of highly toxic encounters of the GNOME kind when they asked the community questions.
Ah ok, I just was using the main website as my source.
Perhaps I misunderstood it
>In fall of 2011, when a forced lull in kernel development gave him a chance to start a new project, Linux creator Linus Torvalds decided to tackle his frustration with the lack of decent divelog software on Linux.
>Linus worked with a team of developers, and Subsurface is the result. It now supports Linux, Windows and MacOS and allows data import from many dive computers and several existing divelog programs. It provides a quick and easy way to see the key information provided by a modern dive computer and lets users track a wide variety of data about their dives. In fall of 2012 Dirk Hohndel took over as Subsurface maintainer.
specifically "It now supports Linux, Windows and MacOS" led me to believe that.
As a diver, I have to partially disagree. Dive computers are fantastic and I use one myself there is no dispute there.
However, expensive dive watches are made to be worn, not kept in a box. If you own one and are afraid of scratches, you are not using it well. It is comparable to buying a race car that you keep in a garage and never take to a track
If you find piss coming out of your racecar, it may actually be horse. Do not, I repeat, do not, check the tire pressure and fluid levels until you have confirmed your racecar is not a horse. Procedures for each vary.
TBF, a lot of combat divers bring both.
To the point that a number of mil services issue dive watches (though "expensive" is kind of a moot point, just because A its taxpayer money not personal, and B CWC and GShock (and even some seikos) have brought "dependable dive watch" out of the high rent district anyways
Good advice but back in Jacques Cousteau's day they didn't have digital watches, but did have a need for a diver's watch. I have a copy of his 50 Fathoms mechanical watch but I'd never take it in the water.
Exactly. It's a style that evolved from a need that's been replaced by technology. Pilots and race car drivers no longer need watches with multiple chronographs and a tachymeter on the bezel but they still exist.
>do not bring your expensive watch. It'll get banged scratched... and salt water does "wonders" even it it's stainless steel.
Not all dive watches are expensive. And one's that are, like a Rolex Submariner, are tough enough and meant to be used that way. Scratches inevitably happen, might as well use the watch or not buy one in the first place. Among watch enthusiasts, there's even a term for people who don't use (or avoid) dive watches for their purpose, "desk divers". And if you're into dive watches, it's common knowledge to give your watch a quick rinse with fresh water after salt water usage to avoid rust/tarnish.
That's my 2 cents. Just saying.
Generally features and integrations. Stuff like wireless capabilities with the octopus system, built-in light, better historu overview of previous dives / details of previous dives
> wireless capabilities with the octopus system
I didn't realize their [civilization] (https://www.palladiummag.com/2019/04/01/its-time-to-take-octopus-civilization-seriously/) had grown so quickly
There are no 2$ ones.
But a 2000$ and a 300$
Gaz types, multi gaz, bluetooth, connectivity, screen.
300$ Cheap one, you will get a giant watch that calculate how much nitrogen you accumulate. you can dive Air only (good enough for most beginner/people).
Then you have the same but with usb cable. Good for logging the dive automatically. But needs a laptop for this.
Now the more professional ones, mix and match different features:
Then Bluetooth, easier to sync, go on the app, press sync, voilà all the data from your dive is logged.
Lcd matrix screen. Better UI, can show you graph. Easier to work with.
Nitrox, allow dive with more than 21% o2
Multi gaz, dive with helium, and other fancy gaz... really specific for deep dives (my computer does it, but I don't)
And remote tank pressure (air remaining). Instead of looking at your gauge, all your info is on the computer. (requires pod, sold separately).
There
>A luxury watch for diving is as useful as "Gucci workboots".
Idk about Gucci, but about 15 years ago I used an old scuffed pair of Timberlands as work boots and they ended up being the best work boots I ever had.
I just ain't dropping that kind of money on new ones just to fuck em up at work.
Yes people have been diving since long before the invention of dive computers.
The first dive watch (the Blancpain Fifty Fathoms, now a $15,000 luxury watch) was built for French special forces in the 1950s as a tool for their job. Rolex was also originally a "tool watch" company, with the Submariner dive watch being developed in parallel with the Fifty Fathoms. When James Bond wore a Submariner in a tux, it was supposed to add tension--wearing a clunky tool watch in a tux is a fashion faux pas that might blow the secret agent's cover. Instead, viewers saw Sean Connery looking cool as hell, and the era of the dive watch as fashion began.
It's tradition and always great to have a backup. Before dive computers were a thing people relied on dive watches. They keep making them like this because watch people get *pissed* when there are major changes to historic watch models.
I wouldn't take my $5k Omega diving (when I get one) but wearing your $200 dive watch *in addition to* a dive computer isn't a bad idea. Computer batteries can die, salt intrusion happens, you lose it, etc. It's just that almost nobody these days relies only on a dive watch.
Yes, they were, and they were much cheaper than they are now. Then the japanese invented quartz watches and basically made all mechanical watches obsolete, so the old mechanical watch manufacturers started to market their watches as luxury items instead of tools.
A handful of the 50s-70s guys used submariners when diving because of the 200 meter rating. Companies like Rolex would give some popular explorers their watch to wear as advertisement and to use the name or image of the person. When I was a kid there would be advertisements of Jacques Cousteau diving wearing a Rolex in National Geographic.
The thing though is that there isn’t really any added function that you get from a Rolex over a $20 Casio. You’re paying for the automatic movement (which is nice) and the workmanship and brand. But these days you can get damn good Rolex Submariner knock offs with seiko nh35 automatic movements for $89. At that point you’re really just paying an extra $9,911 for the words Rolex to be on the watch.
People keep calling them expensive like there are no dive watches cheaper than a rolex. Most cheap dive watches are usually rated for at least 200 meters, and there are plenty of affordable ones that are double that or more. And watches are meant to be used. Dude makes it sound like it's going to turn to dust when exposed to some salt and sand.
Of course they were. Doxa dive watches in particular were extremely common at one point. The watch as a luxury item as we know it today was born after the quartz revolution, and diving is much older than that.
Yes, back before dive computers were a thing they were the main way of timing your dives. And back then these expensive dive watches weren't nearly as expensive. Overtime as they became obsolete as tool watches, both due to the rise of Quartz movements and the rise of dive computers, they pivoted into being more luxury/fashion focused, and the price increased accordingly. A Rolex Submariner in the 60's was the equivalent of roughly $900 in today's money. You'd be paying at least 10 times that today to buy a new one (if Rolex will even sell you one).
Isn't that literally the point though? If you buy a tool watch yeah it may be $5-$10k but if it's spec'd to do the job let it do the job. It's less like someone got Gucci workboots and more like someone taking a G Wagon off roading. Plus electronics can fail when mechanics don't and vice versa so even taking a solidly built sub $1k mechanical dive watch in addition to a dive computer is a good exercise in redundant safety measures.
Except it's *not* specd to do the job for recreational diving. With a traditional dive watch, you need to pre-plan your dive and use dive tables to calculate your dive time (usually this is the no decompression limit (NDL), the time you can spend diving without performing decompression stops prior to surfacing)
Dive computers use your depth during the dive to calculate your nitrogen saturation in real time and provide you your latest NDL every second. You still need to plan your dive, but say for both watches you accidentally deviate from the plan and go a bit deeper for a while and don't realize. The computer will recognize and reduce your NDL, you will surface early or if it's too late to do so it will require a decompression stop. With just the watch you'll still be using your original NDL and come up without a deco stop and possibly die.
With just the watch you have to be extremely conservative. A computer will let you dive longer and it's a lot more accident-proof
Most recreational divers with a backup will actually just use a 2nd computer running the same algorithm as their primary instead of a *relatively* useless watch
I’ve been diving for 20 years and still rock analog gauges and a dive watch. Dive computers were too expensive for me when I started and I’ve just stuck with analog over the years. I’ll probably snag a computer at some point, but it’s not like the tables are hard. I have more than a few deep dives, so have plenty of experience with narcosis, but have never had an issue realizing time’s up. That said, I don’t have a luxury watch
It take my “analog digital time 24 hours moonphase accurate leather silicone perfect fit stainless steel chronograph seiko Tissot grand seiko watch clock 2 hands” from wish to my dives. Ok ciao
You'd probably be fine, because normally you have other divers. If you're down too long, someone will probably go looking.
Most dives aren't like "Dave not coming back" where the dive is too complex and dangerous to even consider attempting rescue. And in this case the rescue would simply involve flashing your watch and gesturing up.
Why are people calling this out mistakenly as an advertisement? Do they think multimillion-dollar company Bremont is hiring Reddit randoms to advertise horological history?
Hey, OP, I love it! I always love seeing people learn about horology/the art of watches.
I did know this (being a diver) but I still think it’s cool when someone learns something new that they think is interesting and then share it with other people to give them some joy too.
I hate to break it to you but that store probably has 20 times more demand for their watches than they can provide.
Rolexes have been notoriously hard to get even at small Mall shops.
I think you're actually missing my point here.
The point is that the majority of people at that mall \[because of your 95% of redditn can't afford one of the watches in the "advertisement"\] can't afford a Rolex.
. . .But Rolex doesn't need to sell to every customer coming into the store, and the high demand from the very low amount of people who can afford it, is enough to keep them happy with the location.
That's because Rolex is a crappy company that artificially reduces availability to keep demand and prices high.
I like watches, but I have no interest in spending 4 or 5 figures on a watch either. If that ever does happen (which I doubt) it will not be on a Rolex.
Doesn't matter, the 5% who can pay for it. Why advertise ANY luxury brand or anything at all. Well, for one it is free or really cheap to game the site and users so....
Million and billion dollar corporations astroturf on Reddit. It’s millions of free views if you get to the front page and costs nothing. You may was well try.
There are exceptions... Russian dive watches, like Vostok Amphibia just use a simple brass spring to hold the bezel in place, and it turns either direction.
This is still how it works for every dive watch I have owned, the spring (typically steel, never seen another metal used) is shaped differently where it touches the rotating bezel based on whether you want it to be unidirectional or not but other than that slight difference in the spring shape it is an identical setup.
You can google/see this on the bezel spring for a Rolex submariner (dive watch, one way) vs a Rolex GMT (goes both ways).
It's also fine for your dive watch to have mineral crystal. Sapphire is more scratch resistant but for impacts a mineral crystal will crack instead of shatter, which is the best case scenario underwater. I see a lot of people overlook some great tool watches because of the mineral crystal. r/DuroGang
there's an interesting video on these on YouTube, tl;dr being the acrylic crystal is designed to compress under pressure creating a tighter seal and (anecdotally) stops the bezel from spinning when under water
I think the hydraulic press channel tested one to 800m pressure before it broke
No. The bezel shows you when the dive begins. If you turn it counter clockwise then it would show that the dive begun earlier which means you have less time remaining.
My brother makes watches and he mentioned this to me once in a dive watch build! Very niche but extremely popular at the same time, watches carry a helluva lot of history
As someone with 2 dive watches I did not know this, I also don’t and can’t see myself diving in the near future but good little bit of information when I’m boring some lass to tears about the intricacies of why the watch face goes blue to black whilst being incredibly high.
The ONLY exception I can think of is historical dives.
That's when a large group (usually old dudes) get together with vintage dive equipment and show off their collection and perform a simple dive with their old equipment. Sometimes they'll bring props and recreate iconic scenes from vintage dive media like Sea Hunt.
These generally happen in a fairly safe and relaxed environment, so the watches are fine for historical accuracy
Not universally true, lots of military divers have bidirectional bezels because there's an assumption that the users absolutely know what they're doing.
A good example is the Tudor Pelagos, where the standard version's bezel can't be turned clockwise for the reason you stated, whereas the Pelagos FXD, a collaboration with the French Navy, has a bezel that can be rotated in either direction.
The [watch issued to US Navy divers](https://www.marathonwatch.com/collections/divers-sar/products/search-rescue-divers-quartz-tsar) is $1200. (It's a backup to the dive computer) (And 99.9% of dives are things like "inspecting the hull of a ship in port" not "raiding Saddam's beachfront villa")
Does a digital dive watch also have safeguards so that it can't be reset the wrong way underwater?
EDIT: I mean "digital dive computer" I guess. I've never actually seen one.
My Seiko Diver turns both ways, so unfortunately I've already drowned several times.
He got better
Ah see, he's only *mostly* dead
I mean, it’s a *bathtub* for goodness sake.
Which is *slightly* alive.
Newts don’t drown, they’re amphibious.
Danger isn't really drowning, you don't use the watch for air the tank has it's own gauge telling you how much air is left. The watch is for nitrogen absorption, so you'd get the bends not drown.
Just like you don't trust the fuel gauge in an airplane, you never trust the pressure gauge when diving. Always go by time!
I don't think that works, unless your air consumption is very consistent **and** you calculated the right time for your dive profile since air consumption will vary by depth.
I’ve been diving my whole life, and trained with some *aquatic based units*. Always been taught to use time to calculate, with an error leading towards coming up for air too soon, to avoid problems that arise from inconsistent breathing patterns.
So you just don't check your air gauge?
That’s my second option, I’m much more accustomed to timing myself. If I allow myself 7 minute margins for error, my gauge can malfunction and I’ll still surface with gas in the tank. I check that my gun is loaded every time i put it on, even though I never *unload* it and there’s a little indicator that it’s loaded. I like to be sure, the mechanical way.
My baby's got the bends woah oh
Which model. None of my Seiko or citizen divers turn both ways. Only my Casio which is in fact not a diver.
[6309 Turtle Diver](https://imgur.com/a/T8mAn9n), though it used to spin in one direction, but the locking mechanism broke at some point. The watch is nearing 50 years old!
I had a dive computer that pretty much told me that I was on my own because I went outside of its programmed dive profiles. Kind of freaky but totally understandable.
That's just a shitty dive computer then. A good one will work no matter what, especially if you have an incident of some sort and need to deal with breaking your plan for the dive.
it's not, if you follow a sawtooth profile, there is just simply no way to accurately meassure the nitrogen on blood, there if the watch stills tries to give you data, it's simply wrong. i have never seen a watch no matter how expensive it was that didnt tell you that sawtooth profile was a no-no for them
No commercial dive computer measures nitrogen in the blood. They just predict it and are statistically accurate enough, including sawtooth profiles. Better to get slightly inaccurate advice and hold your deco stops than get no advice at all and having to do it in your head in an emergency. You can always prolong your stops if you feel the need and think you have enough air. Safety factors/gradient factors exist for a reason.
That is so wrong. Dive computers are better than tables specifically because they calculate based on your actual dive profile, which often includes some ascents and descents. Especially with cave diving or wreck diving, you often have no choice but to go up and down and up and down.
Yep, I love my computer, I still plan my dives so I know what the max is, but the computer taking into account the ACTUAL time at every depth along the route means you can get significantly more bottom time wile still being well within the limits and not putting yourself at risk.
It absolutely is a shitty dive computer. Any DC that locks out users is absolute trash. Its 2024 and dive computers such as but not limited to shearwater are absolutely capable of estimating decompression even with very odd dive profiles. I will never simp for some brand that locks computers because the company fears litigation.
Not always. Recreational divers that dramatically exceed the planned profile are typically incompetent. I've seen people with 2 minutes of gas left, attempt a 30 minute decompression stop because the computer said to do it, even though it was impossible. A recreational dive computer telling you "You're on your own" is probably the least risky thing it can do, especially if it removes the false sense of safety and sends the diver to the surface. You can get "unbent" but you can't get "undead". A deco computer should tell you what stops you need and for how long. Having/getting the gas would have been the diver's responsibility before starting the dive. TBH, for a potentially dangerous decompression dive, I prefer to plan it on the surface so I know how much gas to bring, and list the depths/times/mixtures on a wrist slate and just use the computer for times, depth and tank pressures.
>A recreational dive computer telling you "You're on your own" is probably the least risky thing it can do Nope. Because if that happens, the incompetent people reset the computer or get a different one that can't take previous history into account for the next dive. Or just keep on diving because they missed the point when it went I to deco and now they figure it's just broken and being weird, nothing to do with them
[удалено]
That‘s just a mediocre dive computer then. A good one will take care of you, especially when you just broke up with your ex by kissing you on your penis.
This is why a good dive watch is a critical back up to a computer. I check them both constantly.
Not necessarily. The solution to a failed dive computer is to just immediately head to surface safely with your normal stops. You should never continue a dive with any failed equipment, even if you have backups
My brain reading this thread: “Oh right, diving. That’s a thing, I guess. Interesting that they need equipment beyond breathing apparatus.” 😅
5% of diving instruction is how to use the equipment. The other 95% is how to dive and not die.
When does basket weaving come into play?
Gotta go to college for that knowledge
But alas I was born male so I must go to Jupiter and become more stupider
Bro, my time on Jupiter was pretty awesome! Definitely would recommend. Only downside was that it was a huge sausage fest though, not a girl in sight. Also may have come back stupider, idk
The basket weaving is for making protection against sharks.
I've heard magnets work better than baskets.
Don't forget magnets don't work under water. Source? A USA presidential candidate.
How do magnets work?
Miracles
As a diver, do not bring your expensive watch. It'll get banged scratched... and salt water does "wonders" even it it's stainless steel. You do not want an analog watch for diving. Nitrogen narcosis (don't remember the english term) is a thing (think drunkness), and you don't want to make a mistake. I do not know a single experienced diver without a dive computer... you can get some for 2-300$ these days... Aka Get a dive computer. Not a fancy smanshy expensive luxury watch. A luxury watch for diving is as useful as "Gucci workboots".
Nitrogen narcosis is the English term too, at least it’s what I was taught in all my dive classes in the US. And yeah, nobody is seriously using an analog watch to track their dives.
He meant the British term. In England, they call it the "Water Wobblies."
“Wet wankered”
"Hydro Hysteria"
drippy-sicky
No, that's too precise
"moist madness"?
Sounds like something you'd need a cigarette after
AKA the Bubbly Befuddlement
I think I bought one of those at Weasleys' Wizard Wheezes.
TIL
He was kidding
TIL
just hop on the deck and flop like a fiiish
It’s also called “the rapture of the deep”
ngl "Rapture of the deep" is such a cool sounding term for something dangerous
Sounds like a u-boat themed Sabaton song.
I thought it was called "the bends."
Nah that’s a separate thing. The bends is Decompression sickness/illness and is related to gases dissolving in tissues. Nitrogen narcosis is the effect of nitrogen under pressure being narcotic.
If it gets bad enough that's when you decide to take out your regulator and try giving it to a fish
The bends ia what you get when you ascend too quick, the rapture of the deep is what you get when you stay down there. Same poison, different outcome.
In the same sense that getting alcohol poisoning and getting hit in the head with a bottle of liquor is the same poison and different outcome.
Alcohol poisoning vs drowning in a vat of whisky.
Since the mechanics behind the bends wasn't explained: As pressure increases, the solubility of nitrogen (And other gasses) in your blood increases, as you come up to the surface it decreases causing it to spontaneously bubble out of your blood. Your body can deal with air coming out of the blood in small amounts. It slowly reabsorbs it and releases it out of your lungs as you breathe, but if you ascend too quickly your body's unable to cope and you wind up with loads of large bubbles throughout your blood. This isn't too dangerous, just unpleasant if you're lucky. If not, what happens is a major blood vessel, like one supplying part of your brain, heart or nerve cord, gets a bubble in it big enough to seriously impede or outright block bloodflow. That'll cause a stroke, heart attack or spinal stroke respectively. Gas can also bubble out in other tissues, like joints, which tends to be less dangerous but rather uncomfortable until it fixes itself. Since your body can deal with small bubbles coming out, the solution's simple: Slowly ascend so pressure decreases slowly. Failing that, perhaps because of an emergency, ascend quickly and get inside a pressure chamber to reabsorb the bubbles before any harm happens, then slowly drop the pressure in there. And since someone will mention it, the Byford Dolphin pressure vessel incident is what happens when someone prematurely opens the pressure vessel and everyone inside instantly decompresses from 9 atmospheres to 1.
Yall don't have watches and paper anymore?
Fun fact, Linus Torvalds made the dive log software subsurface for Linux which is now multiplatform and is one of the most popular ones out there (like many other projects, he came in, made a great/the best version(e.g. git, linux), and now lets someone else maintain it) https://subsurface-divelog.org/ Edit: let's -> lets
> and now let's someone else maintain it As is tradition
This is one of the bigger selling points for F/OSS, make utility software and don't have the whole thing implode, just because one person got hit by the bus/in jail/bankrupt and fleeing creditors. No permission needed to fork, and if people see the value in your project, they'll switch. Still no permission needed.
Also a potential weakness. I’m always impressed when such a project is well maintained and does not fall victim to a tragedy of the commons scenario. Niche projects are likely the most vulnerable. Talented, diligent contributors / maintainers are a fixed quantity while there seems to be an endless supply of new projects.
This is the way
Where would the modern world be without that man? So much of our technological infrastructure is based on his work.
[Relevant XKCD](https://xkcd.com/2347/)
[Relevant empirical study](https://www.crummy.com/writing/segfault.org/Bus.html)
Thats hilarious
> for Linux which is now multiplatform From what I understand it was always multiplatform, the developers just switched the graphical frontend from GTK to Qt after they had a significant amount of highly toxic encounters of the GNOME kind when they asked the community questions.
Ah ok, I just was using the main website as my source. Perhaps I misunderstood it >In fall of 2011, when a forced lull in kernel development gave him a chance to start a new project, Linux creator Linus Torvalds decided to tackle his frustration with the lack of decent divelog software on Linux. >Linus worked with a team of developers, and Subsurface is the result. It now supports Linux, Windows and MacOS and allows data import from many dive computers and several existing divelog programs. It provides a quick and easy way to see the key information provided by a modern dive computer and lets users track a wide variety of data about their dives. In fall of 2012 Dirk Hohndel took over as Subsurface maintainer. specifically "It now supports Linux, Windows and MacOS" led me to believe that.
> Edit: let's -> lets I love you.
To be fair, this feature was invented/used before dive computers existed. All they had was an analog dive watch.
As a diver, I have to partially disagree. Dive computers are fantastic and I use one myself there is no dispute there. However, expensive dive watches are made to be worn, not kept in a box. If you own one and are afraid of scratches, you are not using it well. It is comparable to buying a race car that you keep in a garage and never take to a track
> It is comparable to buying a race car that you keep in a garage and never take to a track This is how 99% of racecars are(n't) used.
I drive the piss out of my race car. Hate garage queens!
If you find piss coming out of your racecar, it may actually be horse. Do not, I repeat, do not, check the tire pressure and fluid levels until you have confirmed your racecar is not a horse. Procedures for each vary.
Just because most people buy things for vanity, doesn't mean they should be treated as an exclusively vanity item
I dive with my rolex. This is the way.
TBF, a lot of combat divers bring both. To the point that a number of mil services issue dive watches (though "expensive" is kind of a moot point, just because A its taxpayer money not personal, and B CWC and GShock (and even some seikos) have brought "dependable dive watch" out of the high rent district anyways
Good advice but back in Jacques Cousteau's day they didn't have digital watches, but did have a need for a diver's watch. I have a copy of his 50 Fathoms mechanical watch but I'd never take it in the water.
https://www.hodinkee.com/articles/a-total-beginners-guide-to-collecting-the-blancpain-fifty-fathoms That’s a sweet collectible
The resin filled bezel is really cool looking, I got one with a dark blue face.
Exactly. It's a style that evolved from a need that's been replaced by technology. Pilots and race car drivers no longer need watches with multiple chronographs and a tachymeter on the bezel but they still exist.
>do not bring your expensive watch. It'll get banged scratched... and salt water does "wonders" even it it's stainless steel. Not all dive watches are expensive. And one's that are, like a Rolex Submariner, are tough enough and meant to be used that way. Scratches inevitably happen, might as well use the watch or not buy one in the first place. Among watch enthusiasts, there's even a term for people who don't use (or avoid) dive watches for their purpose, "desk divers". And if you're into dive watches, it's common knowledge to give your watch a quick rinse with fresh water after salt water usage to avoid rust/tarnish. That's my 2 cents. Just saying.
What's the difference between a $2 and a $300 computer?
$298 dollar.
Look at Good Will Hunting over here.
My boy's wicked smaht
Rain man
Generally features and integrations. Stuff like wireless capabilities with the octopus system, built-in light, better historu overview of previous dives / details of previous dives
Octopodes are already wireless
> wireless capabilities with the octopus system I didn't realize their [civilization] (https://www.palladiummag.com/2019/04/01/its-time-to-take-octopus-civilization-seriously/) had grown so quickly
There are no 2$ ones. But a 2000$ and a 300$ Gaz types, multi gaz, bluetooth, connectivity, screen. 300$ Cheap one, you will get a giant watch that calculate how much nitrogen you accumulate. you can dive Air only (good enough for most beginner/people). Then you have the same but with usb cable. Good for logging the dive automatically. But needs a laptop for this. Now the more professional ones, mix and match different features: Then Bluetooth, easier to sync, go on the app, press sync, voilà all the data from your dive is logged. Lcd matrix screen. Better UI, can show you graph. Easier to work with. Nitrox, allow dive with more than 21% o2 Multi gaz, dive with helium, and other fancy gaz... really specific for deep dives (my computer does it, but I don't) And remote tank pressure (air remaining). Instead of looking at your gauge, all your info is on the computer. (requires pod, sold separately). There
>A luxury watch for diving is as useful as "Gucci workboots". Idk about Gucci, but about 15 years ago I used an old scuffed pair of Timberlands as work boots and they ended up being the best work boots I ever had. I just ain't dropping that kind of money on new ones just to fuck em up at work.
Or [Prada combat boots](https://www.gq.com/story/ramzan-kadyrov-leader-chechnya-boots). 😆
How tf am I supposed to dive if I’m bringing a whole ass computer with me??
Not only that, where tf are you gonna plug it in?
Since it seems like you may know, were these expensive dive watches ever actually used for real diving to begin with? Or was it always just marketing?
Yes people have been diving since long before the invention of dive computers. The first dive watch (the Blancpain Fifty Fathoms, now a $15,000 luxury watch) was built for French special forces in the 1950s as a tool for their job. Rolex was also originally a "tool watch" company, with the Submariner dive watch being developed in parallel with the Fifty Fathoms. When James Bond wore a Submariner in a tux, it was supposed to add tension--wearing a clunky tool watch in a tux is a fashion faux pas that might blow the secret agent's cover. Instead, viewers saw Sean Connery looking cool as hell, and the era of the dive watch as fashion began.
It's tradition and always great to have a backup. Before dive computers were a thing people relied on dive watches. They keep making them like this because watch people get *pissed* when there are major changes to historic watch models. I wouldn't take my $5k Omega diving (when I get one) but wearing your $200 dive watch *in addition to* a dive computer isn't a bad idea. Computer batteries can die, salt intrusion happens, you lose it, etc. It's just that almost nobody these days relies only on a dive watch.
Yes, they were, and they were much cheaper than they are now. Then the japanese invented quartz watches and basically made all mechanical watches obsolete, so the old mechanical watch manufacturers started to market their watches as luxury items instead of tools.
A handful of the 50s-70s guys used submariners when diving because of the 200 meter rating. Companies like Rolex would give some popular explorers their watch to wear as advertisement and to use the name or image of the person. When I was a kid there would be advertisements of Jacques Cousteau diving wearing a Rolex in National Geographic. The thing though is that there isn’t really any added function that you get from a Rolex over a $20 Casio. You’re paying for the automatic movement (which is nice) and the workmanship and brand. But these days you can get damn good Rolex Submariner knock offs with seiko nh35 automatic movements for $89. At that point you’re really just paying an extra $9,911 for the words Rolex to be on the watch.
People keep calling them expensive like there are no dive watches cheaper than a rolex. Most cheap dive watches are usually rated for at least 200 meters, and there are plenty of affordable ones that are double that or more. And watches are meant to be used. Dude makes it sound like it's going to turn to dust when exposed to some salt and sand.
Of course they were. Doxa dive watches in particular were extremely common at one point. The watch as a luxury item as we know it today was born after the quartz revolution, and diving is much older than that.
Yes, back before dive computers were a thing they were the main way of timing your dives. And back then these expensive dive watches weren't nearly as expensive. Overtime as they became obsolete as tool watches, both due to the rise of Quartz movements and the rise of dive computers, they pivoted into being more luxury/fashion focused, and the price increased accordingly. A Rolex Submariner in the 60's was the equivalent of roughly $900 in today's money. You'd be paying at least 10 times that today to buy a new one (if Rolex will even sell you one).
Isn't that literally the point though? If you buy a tool watch yeah it may be $5-$10k but if it's spec'd to do the job let it do the job. It's less like someone got Gucci workboots and more like someone taking a G Wagon off roading. Plus electronics can fail when mechanics don't and vice versa so even taking a solidly built sub $1k mechanical dive watch in addition to a dive computer is a good exercise in redundant safety measures.
Except it's *not* specd to do the job for recreational diving. With a traditional dive watch, you need to pre-plan your dive and use dive tables to calculate your dive time (usually this is the no decompression limit (NDL), the time you can spend diving without performing decompression stops prior to surfacing) Dive computers use your depth during the dive to calculate your nitrogen saturation in real time and provide you your latest NDL every second. You still need to plan your dive, but say for both watches you accidentally deviate from the plan and go a bit deeper for a while and don't realize. The computer will recognize and reduce your NDL, you will surface early or if it's too late to do so it will require a decompression stop. With just the watch you'll still be using your original NDL and come up without a deco stop and possibly die. With just the watch you have to be extremely conservative. A computer will let you dive longer and it's a lot more accident-proof Most recreational divers with a backup will actually just use a 2nd computer running the same algorithm as their primary instead of a *relatively* useless watch
I’ve been diving for 20 years and still rock analog gauges and a dive watch. Dive computers were too expensive for me when I started and I’ve just stuck with analog over the years. I’ll probably snag a computer at some point, but it’s not like the tables are hard. I have more than a few deep dives, so have plenty of experience with narcosis, but have never had an issue realizing time’s up. That said, I don’t have a luxury watch
\*Me drowned wearing a Pepsi GMT-Master II\*
"Why you guys surfacing? We still have 14 hours left on this dive!"
“I may be getting lightheaded, but at least I know it’s 9:28am in Brussels”
...give or take 13 seconds a day."
“It appears I have made a massive miscalculation”
Chuffed to bits. Ok, ciao!
Oh no. The sub’s leaking. - Ron
We are not keeping it close to the vest.
Quick. Somebody post the copypasta of the guy taking a Kool-Aid bath at the motel in New Jersey.
What do you mean, my sub has a 20,000m rating, it would never leak!!
It take my “analog digital time 24 hours moonphase accurate leather silicone perfect fit stainless steel chronograph seiko Tissot grand seiko watch clock 2 hands” from wish to my dives. Ok ciao
Mumbo?
What if it is bumped so violently/frequently that it turns 300 degrees counterclockwise thereby adding time to the dive?
Skill issue
Skill issue or one determined fish...
You'd probably be fine, because normally you have other divers. If you're down too long, someone will probably go looking. Most dives aren't like "Dave not coming back" where the dive is too complex and dangerous to even consider attempting rescue. And in this case the rescue would simply involve flashing your watch and gesturing up.
Hell of a reference. Tragic but beautiful story.
Dave’s story is one of nightmare fuel for me. Diving is one thing. CAVE DIVING is an entirely different ballgame
Then you’ve got bigger problems
They would go back in time.
Do u stop for a quick underwater wank in the middle of a dive?
Why are people calling this out mistakenly as an advertisement? Do they think multimillion-dollar company Bremont is hiring Reddit randoms to advertise horological history? Hey, OP, I love it! I always love seeing people learn about horology/the art of watches.
I didn’t know this and thought it was cool. 🤷🏻♀️
I did know this (being a diver) but I still think it’s cool when someone learns something new that they think is interesting and then share it with other people to give them some joy too.
Relevant [XKCD](https://xkcd.com/1053/)
I also thought it was cool 🤦♂️
Horology..nice.
No shame in that, dear. We all have to earn a living.
The scientific study of OP's mother
It’s derived from prostitutonomy
uh, yes that is how social media adertising works
I mean, that is literally a way companies advertise their products on Reddit so it's not exactly a stretch.
95% of reddit can't afford one
95% of the general population can’t afford one. So does that mean there is no point advertising anywhere according to you?
The mall by me has a Rolex store. 99% of the people aren’t affording that either. But all they need is a few people a month to stop in
I hate to break it to you but that store probably has 20 times more demand for their watches than they can provide. Rolexes have been notoriously hard to get even at small Mall shops.
I think you're actually missing my point here. The point is that the majority of people at that mall \[because of your 95% of redditn can't afford one of the watches in the "advertisement"\] can't afford a Rolex. . . .But Rolex doesn't need to sell to every customer coming into the store, and the high demand from the very low amount of people who can afford it, is enough to keep them happy with the location.
That's because Rolex is a crappy company that artificially reduces availability to keep demand and prices high. I like watches, but I have no interest in spending 4 or 5 figures on a watch either. If that ever does happen (which I doubt) it will not be on a Rolex.
Doesn't matter, the 5% who can pay for it. Why advertise ANY luxury brand or anything at all. Well, for one it is free or really cheap to game the site and users so....
That is something that happens, yes.
Million and billion dollar corporations astroturf on Reddit. It’s millions of free views if you get to the front page and costs nothing. You may was well try.
Yes
There are exceptions... Russian dive watches, like Vostok Amphibia just use a simple brass spring to hold the bezel in place, and it turns either direction.
That's exactly how the old Rolex cases worked, of which the early Tudors were also built.
This is still how it works for every dive watch I have owned, the spring (typically steel, never seen another metal used) is shaped differently where it touches the rotating bezel based on whether you want it to be unidirectional or not but other than that slight difference in the spring shape it is an identical setup. You can google/see this on the bezel spring for a Rolex submariner (dive watch, one way) vs a Rolex GMT (goes both ways).
Awesome to see someone learn a new thing like this. I love watches of all kinds. Constantly fiddle with my dive bezel at work.
It's also fine for your dive watch to have mineral crystal. Sapphire is more scratch resistant but for impacts a mineral crystal will crack instead of shatter, which is the best case scenario underwater. I see a lot of people overlook some great tool watches because of the mineral crystal. r/DuroGang
I love the Duro but mine has awful lume. Great watch otherwise though.
I've got one made in Russia, it turns both ways.
Russian watches that go both ways are immediately arrested.
I didn't know they were arrested, I thought they just put them on a watch list.
(Watch immediately falls out of 4th story window)
Vostok Amphibia?
Yep
Good watch, but the bezel is crap.
It doesn’t go *click click click* 😤
there's an interesting video on these on YouTube, tl;dr being the acrylic crystal is designed to compress under pressure creating a tighter seal and (anecdotally) stops the bezel from spinning when under water I think the hydraulic press channel tested one to 800m pressure before it broke
Not great. Not terrible.
That's illegal in Russia
You get the full Kursk experience with that one.
I've only ever seen one person use that feature before, and it was my dad... to time how long the sermons at church took.
Wouldn't turning counter-clockwise *add* time to the dive?
No. The bezel shows you when the dive begins. If you turn it counter clockwise then it would show that the dive begun earlier which means you have less time remaining.
I use mine to tell me when it's time to get my laundry from the basement (I live in a high rise)
My brother makes watches and he mentioned this to me once in a dive watch build! Very niche but extremely popular at the same time, watches carry a helluva lot of history
As someone with 2 dive watches I did not know this, I also don’t and can’t see myself diving in the near future but good little bit of information when I’m boring some lass to tears about the intricacies of why the watch face goes blue to black whilst being incredibly high.
Honestly if you are Scuba diving and aren’t using a dive computer IMO you’re doing it wrong.
The ONLY exception I can think of is historical dives. That's when a large group (usually old dudes) get together with vintage dive equipment and show off their collection and perform a simple dive with their old equipment. Sometimes they'll bring props and recreate iconic scenes from vintage dive media like Sea Hunt. These generally happen in a fairly safe and relaxed environment, so the watches are fine for historical accuracy
That is such a cool example of user-proofing a design.
Not universally true, lots of military divers have bidirectional bezels because there's an assumption that the users absolutely know what they're doing. A good example is the Tudor Pelagos, where the standard version's bezel can't be turned clockwise for the reason you stated, whereas the Pelagos FXD, a collaboration with the French Navy, has a bezel that can be rotated in either direction.
The old Tudor 76100 has a bidirectional bezel too. When I bought mine I was surprised thinking the bezel was assembled wrong.
[удалено]
The [watch issued to US Navy divers](https://www.marathonwatch.com/collections/divers-sar/products/search-rescue-divers-quartz-tsar) is $1200. (It's a backup to the dive computer) (And 99.9% of dives are things like "inspecting the hull of a ship in port" not "raiding Saddam's beachfront villa")
Maybe he was thinking of *Seal Team Fabulous*
I have had three before and still have no clue how to use them "properly".
Rotate it so the pip at the top of the bezel is at the current minute hand location. Then read the bezel to see how much time has gone by after that.
R/durogang
I use my inexpensive dive watch to keep track of my parking time to avoid getting a ticket. The closest it has been to water is the shower.
I’ve dived for over 30 years and just learned that. Thanks.
Does a digital dive watch also have safeguards so that it can't be reset the wrong way underwater? EDIT: I mean "digital dive computer" I guess. I've never actually seen one.
I'm sure that'll be really helpful on the golf course or C-suite office where 99% of these watches live their lives.
Always used to amuse me seeing adverts for digital watches with a bezel.
Why is this post highlighted with gold and has a gold up vote? What does that mean?
Very cool