Re:“One Day Longer and Those 13 Boys Would Be Dead”
by bccdee on Saturday July 10, 2021 @05:47PM
(#27796691)
This may be a somewhat silly question, but why couldn't they just have used flashlights? I'm sure there's an obvious reason, but I don't know what it is.
Re:“One Day Longer and Those 13 Boys Would Be Dead”
by lamontcg on Sunday July 11, 2021 @01:06AM
(#27798591)
They do, but in zero viz there's so much crap suspended in the water that you literally can't see anything more than an inch in front of your face. Its the worst driving-into-a-snowstorm problem you can imagine.
Re:“One Day Longer and Those 13 Boys Would Be Dead”
by ben0x539 on Saturday July 10, 2021 @06:17PM
(#27796875)
I assumed it's not just darkness but mud.
Re:“One Day Longer and Those 13 Boys Would Be Dead”
by jgwil2 on Saturday July 10, 2021 @06:02PM
(#27796783)
I assume it wasn't just darkness they were dealing with, but also that the water was so muddy it became opaque, in which case lights wouldn't have helped them.
Re:“One Day Longer and Those 13 Boys Would Be Dead”
by bccdee on Saturday July 10, 2021 @10:54PM
(#27798147)
Ah of course, yeah that must be it.
Re:“One Day Longer and Those 13 Boys Would Be Dead”
by biasedbrain on Saturday July 10, 2021 @06:00PM
(#27796766)
Mud
Re:“One Day Longer and Those 13 Boys Would Be Dead”
by watwut on Sunday July 11, 2021 @07:47AM
(#27800077)
> Even assuming that you had those already available, laying them would be a very slow process, and they would be a hindrance rather than help in very narrow passages.
The point would be to use them so that there is no necessity to go through narrow passage. The diver says that when boys went in, they walked through wide openings on bottom.
But, they were probably impractical for other reasons.
Portable sonar systems with in-helmet displays were put in use by the US Navy only last year: https://www.navalnews.com/naval-news/2021/03/us-navy-teams-w...
> A full spacesuit-like helmet with air to be able to talk via radio?
Would fuck up your buoyancy, but there are systems where you have only an air pockt around your mouth. But the range would be so low as to be nearly useless inside a cave.
> Laying down some flexible tunnels that could be inflated with air or maybe just pumped with clear water to gain visibility?
Even assuming that you had those already available, laying them would be a very slow process, and they would be a hindrance rather than help in very narrow passages.