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Why didn't these divers free dive out? Should have been pretty easy?

by Ekaros 2y ago

jajko 2y ago
Clearly it wasn't, having diving certificate doesn't make you magically an Aquaman.
- relistan 2y ago
  Also, presumably they did not know if the boat was on the bottom of the sea or not, and at what depth.
Filligree 2y ago
Freediving inside an enclosed space is known as “angling for a Darwin Award”. Doing it in a shipwreck is one of the most dangerous things you can possibly do. You won’t have the normal cues of up and down, won’t have any sort of decent lighting, and all the while your body wants to panic due to CO2. Then, they’d been breathing compressed air. If they reached the surface they’d get the bends, and depending on depth that could kill them or cause serious damage.
shellfishgene 2y ago
Most SCUBA divers don't train freediving, next time at the pool see how far you can dive on one breath. Then imagine being panicked, in the dark, in a ship you don't know that well, in the machine room you've never been in before, where now everything is upside down and at an angle, filled with water and all kinds of stuff floating around.
- Filligree 2y ago
  Do I have to? It’s going to give me nightmares. Yeah, if he’d tried swimming out there’d have been one less survivor.
saberience 2y ago
So I'll give you the benefit of the doubt that you're not a diver or free-diver. I've done a lot of diving and a little bit of free-diving. I would never, not a million years, try and free-dive out of a boat, especially a large and unfamiliar boat that had sunk. It's almost certain death to try and do so. 1) No Breath: First of all, the average person can roughly hold their breath a minute or lets be generous and say one and a half minutes. Well, that's in perfect comfortable conditions in a nice warm, safe, room. Now you're in cold water, you're in shock because your boat sank, and you're in the dark, you're likely highly anxious or panicking, you can now hold your breath 30-45 seconds if doing no work at all. If you're actively swimming for your life you probably last for 20-30 seconds IF THAT. 2) Getting Lost: Dive boats can be quite large, full of random objects, and if you've been diving on a boat for a few days only, there is little chance you are going to be able to navigate through the boat in the dark in good conditions, now imagine the boat is filled with water, completely dark and upside down. You are panicked and disoriented, if you somehow manage to find an exit it's almost entirely down to dumb luck. 3) Depth (and potential DCS). You have no idea what depth the boat has sunk to. So let's say it's at 50m, it takes a long time to surface from 50m and if it's already taken you 1 minute to get out of the boat, you're fucked again. Not to mention any DCS you may suffer if you've been breathing compressed air down at 50m for very long! Maybe there are some combination of factors which would make this a good idea, like, very small boat with very obvious exits, warm water in the tropics, shallow water and its daytime so there is light to see by, and you're also a champion free-diver and regularly do 7-9 minute breath holds. Sure in these cases you might just swim out. But if you're a normal person trying to swim out of a boat in the dark, upside-down, in unknown depths, cold water, random detritus floating everywhere, just stay put!
- shellfishgene 2y ago
  Depth (and potential DCS). You have no idea what depth the boat has sunk to. So let's say it's at 50m, it takes a long time to surface from 50m and if it's already taken you 1 minute to get out of the boat, you're fucked again. Not to mention any DCS you may suffer if you've been breathing compressed air down at 50m for very long! If the boat is at 50 m the chances of getting rescued in time are probably so low that it may even make sense to try as a last ditch effort? If you remember to breath out on ascent. Hard to say...

Why didn't these divers free dive out? Should have been pretty easy?

by Ekaros 2y ago

Why didn't these divers free dive out? Should have been pretty easy?

jajko 2y ago

Clearly it wasn't, having diving certificate doesn't make you magically an Aquaman.

relistan 2y ago
Also, presumably they did not know if the boat was on the bottom of the sea or not, and at what depth.

Filligree 2y ago

Freediving inside an enclosed space is known as “angling for a Darwin Award”. Doing it in a shipwreck is one of the most dangerous things you can possibly do. You won’t have the normal cues of up and down, won’t have any sort of decent lighting, and all the while your body wants to panic due to CO2. Then, they’d been breathing compressed air. If they reached the surface they’d get the bends, and depending on depth that could kill them or cause serious damage.

shellfishgene 2y ago

Most SCUBA divers don't train freediving, next time at the pool see how far you can dive on one breath. Then imagine being panicked, in the dark, in a ship you don't know that well, in the machine room you've never been in before, where now everything is upside down and at an angle, filled with water and all kinds of stuff floating around.

Filligree 2y ago
Do I have to? It’s going to give me nightmares. Yeah, if he’d tried swimming out there’d have been one less survivor.

saberience 2y ago

So I'll give you the benefit of the doubt that you're not a diver or free-diver. I've done a lot of diving and a little bit of free-diving. I would never, not a million years, try and free-dive out of a boat, especially a large and unfamiliar boat that had sunk. It's almost certain death to try and do so. 1) No Breath: First of all, the average person can roughly hold their breath a minute or lets be generous and say one and a half minutes. Well, that's in perfect comfortable conditions in a nice warm, safe, room. Now you're in cold water, you're in shock because your boat sank, and you're in the dark, you're likely highly anxious or panicking, you can now hold your breath 30-45 seconds if doing no work at all. If you're actively swimming for your life you probably last for 20-30 seconds IF THAT. 2) Getting Lost: Dive boats can be quite large, full of random objects, and if you've been diving on a boat for a few days only, there is little chance you are going to be able to navigate through the boat in the dark in good conditions, now imagine the boat is filled with water, completely dark and upside down. You are panicked and disoriented, if you somehow manage to find an exit it's almost entirely down to dumb luck. 3) Depth (and potential DCS). You have no idea what depth the boat has sunk to. So let's say it's at 50m, it takes a long time to surface from 50m and if it's already taken you 1 minute to get out of the boat, you're fucked again. Not to mention any DCS you may suffer if you've been breathing compressed air down at 50m for very long! Maybe there are some combination of factors which would make this a good idea, like, very small boat with very obvious exits, warm water in the tropics, shallow water and its daytime so there is light to see by, and you're also a champion free-diver and regularly do 7-9 minute breath holds. Sure in these cases you might just swim out. But if you're a normal person trying to swim out of a boat in the dark, upside-down, in unknown depths, cold water, random detritus floating everywhere, just stay put!

shellfishgene 2y ago
Depth (and potential DCS). You have no idea what depth the boat has sunk to. So let's say it's at 50m, it takes a long time to surface from 50m and if it's already taken you 1 minute to get out of the boat, you're fucked again. Not to mention any DCS you may suffer if you've been breathing compressed air down at 50m for very long! If the boat is at 50 m the chances of getting rescued in time are probably so low that it may even make sense to try as a last ditch effort? If you remember to breath out on ascent. Hard to say...