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Men rescued from Pacific island after writing SOS in sand

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11–20 of 123 posts

Re: Men rescued from Pacific island after writing SOS in sand

#11
post #3

How often is the best earth-facing satellite imagery updated? It'd be really cool to sic handwriting recognition on it to continuously look for "SOS".

The best ones have a turnaround of hours. I imagine it could get expensive quite quickly as the area to do that search would be absolutely massive.

Re: Men rescued from Pacific island after writing SOS in sand

#12
post #5

Call this a freely given and viable but hard to monetize idea - this is a very tractable area for software and drones. Same with locating people in lost wilderness areas. You have a programmatic way to organize coverage areas, you have access to above-human audio and video capabilities, and it reduces the resources/time ratio that is critical in rescues. This was the tragic and avoidable story that convinced me this…

Well, there are just personal locator beacons which you can rent and tell rescue personnel exactly where you are if you need a rescue.

Satellite phones with this capability are remarkably cheap for anyone who’s undertaking activities that might call for this.

Contracts typically have a call centre able to dispatch relevant local authorities wherever you are.

Re: Men rescued from Pacific island after writing SOS in sand

#13
post #5

Call this a freely given and viable but hard to monetize idea - this is a very tractable area for software and drones. Same with locating people in lost wilderness areas. You have a programmatic way to organize coverage areas, you have access to above-human audio and video capabilities, and it reduces the resources/time ratio that is critical in rescues. This was the tragic and avoidable story that convinced me this…

Well, there are just personal locator beacons which you can rent and tell rescue personnel exactly where you are if you need a rescue.

What if you lose them or they fail to work?

Re: Men rescued from Pacific island after writing SOS in sand

#14
post #9

Call this a freely given and viable but hard to monetize idea - this is a very tractable area for software and drones. Same with locating people in lost wilderness areas. You have a programmatic way to organize coverage areas, you have access to above-human audio and video capabilities, and it reduces the resources/time ratio that is critical in rescues. This was the tragic and avoidable story that convinced me this…

Or... a dude in a helicopter with FLIR? Sometimes, low tech is best, honestly. Of course they already have that. The problem isn't coverage usually, it's density of the terrain features and vegetation, and an unknown search radius in some cases. That, and unprepared people with no way to signal a search vehicle if one comes near. That's a human problem though, not a tech problem.

Sure. It's the unknown search radius, availability of pilots, human factors, as well as the greater ability of a drone to self (or with human intervention) track in to greater resolution that makes me wonder if this is doable. Get the helicopter with a flir camera, but also send out 50 quadcopters or uavs as a force multiplier. If there is some sort of interesting infrared or acoustic signature at a site, just log it with GPS coordinates for human follow up.

Re: Men rescued from Pacific island after writing SOS in sand

#15
post #5

Call this a freely given and viable but hard to monetize idea - this is a very tractable area for software and drones. Same with locating people in lost wilderness areas. You have a programmatic way to organize coverage areas, you have access to above-human audio and video capabilities, and it reduces the resources/time ratio that is critical in rescues. This was the tragic and avoidable story that convinced me this…

Well, there are just personal locator beacons which you can rent and tell rescue personnel exactly where you are if you need a rescue.

They're not even expensive to buy. I picked one up for a few hundred dollars for hiking. I believe it's good for 10 years, until the battery needs replacing.

I don't even do particularly intense hikes, usually not even overnight, but I read a few stories and realised how easy it is to end up in a situation where you need one. You just have to slip over and land badly, that's all it takes.

Or maybe it won't be me, but someone else on the trail who needs help.

Re: Men rescued from Pacific island after writing SOS in sand

#16
Is it me, or does it rather instead look like they arranged tree branches + leaves to make the word, not dug in sand?

And on another note, when you see things from an island scale, you can see that even at the size they drew those letters, it might've been missed. The world is big...

Re: Men rescued from Pacific island after writing SOS in sand

#17
post #3

How often is the best earth-facing satellite imagery updated? It'd be really cool to sic handwriting recognition on it to continuously look for "SOS".

Sentinel satellite data is open, I'm not sure if the resolution is good enough though.

Re: Men rescued from Pacific island after writing SOS in sand

#18
post #15
post #5

Earlier quoted context omitted.

Well, there are just personal locator beacons which you can rent and tell rescue personnel exactly where you are if you need a rescue.

They're not even expensive to buy. I picked one up for a few hundred dollars for hiking. I believe it's good for 10 years, until the battery needs replacing. I don't even do particularly intense hikes, usually not even overnight, but I read a few stories and realised how easy it is to end up in a situation where you need one. You just have to slip over and land badly, that's all it takes. Or maybe it won't be me, but…

The history of humans, traveling totally unprepared into harsh environmental conditions, thinking they'll just "Rambo" their way through, is stunning.

The "Into the Wild" bus comes to mind[1]. So many people died every year, attempting to forge rivers unprepared, and brave the harsh Alaskan elements, that they had to remove this bus! It wasn't enough that people died every year, and that most of them had practically zero harsh environment experience...

Nature will kill you every chance it gets. Be prepared, or don't go.

[1] https://www.bbc.com/news/world-us-canada-53106441

Re: Men rescued from Pacific island after writing SOS in sand

#19
post #15
post #5

Earlier quoted context omitted.

Well, there are just personal locator beacons which you can rent and tell rescue personnel exactly where you are if you need a rescue.

They're not even expensive to buy. I picked one up for a few hundred dollars for hiking. I believe it's good for 10 years, until the battery needs replacing. I don't even do particularly intense hikes, usually not even overnight, but I read a few stories and realised how easy it is to end up in a situation where you need one. You just have to slip over and land badly, that's all it takes. Or maybe it won't be me, but…

yeah I've got one too (for kayaking in the ocean and hiking/overlanding), the peace of mind that they offer is worth the cost alone.

I like to go places with no cell signal, and when you're hours from the nearest paved road, it's nice to know that you can get airlifted out if you get bitten by a snake, etc.

Re: Men rescued from Pacific island after writing SOS in sand

#20
post #15
post #5

Earlier quoted context omitted.

Well, there are just personal locator beacons which you can rent and tell rescue personnel exactly where you are if you need a rescue.

They're not even expensive to buy. I picked one up for a few hundred dollars for hiking. I believe it's good for 10 years, until the battery needs replacing. I don't even do particularly intense hikes, usually not even overnight, but I read a few stories and realised how easy it is to end up in a situation where you need one. You just have to slip over and land badly, that's all it takes. Or maybe it won't be me, but…

A few hundred dollars seems fastastically expensive to me. What is possibly inside it that justifies that price?
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