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129-year-old vessel still tethered to lifeboat found on floor of Lake Huron

smithsonianmag.com

31–33 of 33 posts

Re: 129-year-old vessel still tethered to lifeboat found on floor of Lake Huron

#31
post #25

If you're from the Great Lakes, you know The Wreck of the Edmund Fitzgerald . If not, maybe not. But it's what you want to listen to while reading this article.

Nitpick, but the Fitzgerald sunk in Lake Superior. Also, I am thrown off by an area called Thunder Bay being in Lake Huron.

I'm well aware, I've hiked the full circuit on Isle Royale.

The verse Euchre players are most likely to drunkenly sing along to names all five of the Lakes.

Re: 129-year-old vessel still tethered to lifeboat found on floor of Lake Huron

#32
post #13

Earlier quoted context omitted.

In diving we think in terms of partial pressures. At sea-level, 21% of air is oxygen, and .21 is also your partial pressure of O2. In order to breath at depth, though, we need to be supplied with a higher and higher pressure of gas to fight the pressure of the surrounding environment opposing our lung expansion. At 10 meters, the pressure doubles sea-level, and you are breathing gas at twice atmospheric pressure (mea…

> Both helium and nitrogen will get stored in your inert tissues and will bubble out catastrophically if you ascend too quickly. I'm not going to link to the Byford Dolphin incident, because it would need a [TW] and I hate that shit, so you can just google it yourself. The 30-second rundown is that on the surface divers live in a very strong steel tank pressurised to the same degree as they would be on the seabed, so…

> so maybe make sure you close the door properly.

Incidental, and didn't get the chance.

      Crammond opened the clamp that was keeping the trunk sealed before Diver 4 (Hellevik) could close the door to the chamber.

The better advice is to make sure your crew is well-rested and your equipment has failsafes in place.

Re: 129-year-old vessel still tethered to lifeboat found on floor of Lake Huron

#33

Earlier quoted context omitted.

> Both helium and nitrogen will get stored in your inert tissues and will bubble out catastrophically if you ascend too quickly. I'm not going to link to the Byford Dolphin incident, because it would need a [TW] and I hate that shit, so you can just google it yourself. The 30-second rundown is that on the surface divers live in a very strong steel tank pressurised to the same degree as they would be on the seabed, so…

> so maybe make sure you close the door properly. Incidental, and didn't get the chance. Crammond opened the clamp that was keeping the trunk sealed before Diver 4 (Hellevik) could close the door to the chamber. The better advice is to make sure your crew is well-rested and your equipment has failsafes in place.

> The better advice is to make sure your crew is well-rested and your equipment has failsafes in place.

The equipment did have interlocks to prevent it being opened incorrectly but nobody used them because they were annoying and fiddly.

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