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We dont have fail safe sensor technologies for cars, so I dont think we should expect to have it for ships that have even a greater need to know things in advan

We dont have fail safe sensor technologies for cars, so I dont think we should expect to have it for ships that have even a greater need to know things in advance.

AlbertCory 3y ago
I was just thinking about knowing how far you are from the banks. Surely that's a solvable problem. It has nothing to do with knowing things in advance.
- mbreese 3y ago
  I'd suspect the issue would be with precision. GPS, et al. are good, but at what resolution do you really need it to be? Is 1m accuracy enough? 1m at what point on the ship? And do you want to install that equipment on each ship traversing the Suez Canal? It was pretty clear from the report that they had a ton of data about the ship's speed, position, rotation, etc. It was quite detailed, not knowing where they were wasn't the problem. The report also showed how much the wind was changing directions at the time. It was all over the place. Again, it was a known factor, just not given the appropriate weight.
  - AlbertCory 3y ago
    LIDAR is cheap enough to put on a consumer car, so I really don't think expense is an issue. It wouldn't be GPS. Not to mention the ships most likely already have transponders. So it does seem like a "You're getting too close to the bank!" alarm should have been screaming at them. And probably was. Not responding properly was the issue.
    - mbreese 3y ago
      How far away does LIDAR work? These are huge ships, pretty far from the banks, and the required positions within the channel locations would vary heavily throughout the trip (and probably even change day to day). From the report though, you’re right that it seemed liked they already knew where they were in the canal with enough accuracy to know they were in trouble.
      - aeonik 3y ago
        They use Lidar to map jungles from airplanes, so the range can be pretty far. I'm not sure what the relationship between resolution and distance is though. I'd assume it's inverse square combined with the Raleigh criterion, or something like that. I'm going to have to research it more though. https://techcrunch.com/2022/05/27/lidar-exposes-the-remnants-of-an-overgrown-ancient-civilization-in-the-amazon/ https://techcrunch.com/2022/05/27/lidar-exposes-the-remnants...

We dont have fail safe sensor technologies for cars, so I dont think we should expect to have it for ships that have even a greater need to know things in advance.

AlbertCory 3y ago

I was just thinking about knowing how far you are from the banks. Surely that's a solvable problem. It has nothing to do with knowing things in advance.

mbreese 3y ago
I'd suspect the issue would be with precision. GPS, et al. are good, but at what resolution do you really need it to be? Is 1m accuracy enough? 1m at what point on the ship? And do you want to install that equipment on each ship traversing the Suez Canal? It was pretty clear from the report that they had a ton of data about the ship's speed, position, rotation, etc. It was quite detailed, not knowing where they were wasn't the problem. The report also showed how much the wind was changing directions at the time. It was all over the place. Again, it was a known factor, just not given the appropriate weight.
- AlbertCory 3y ago
  LIDAR is cheap enough to put on a consumer car, so I really don't think expense is an issue. It wouldn't be GPS. Not to mention the ships most likely already have transponders. So it does seem like a "You're getting too close to the bank!" alarm should have been screaming at them. And probably was. Not responding properly was the issue.
  - mbreese 3y ago
    How far away does LIDAR work? These are huge ships, pretty far from the banks, and the required positions within the channel locations would vary heavily throughout the trip (and probably even change day to day). From the report though, you’re right that it seemed liked they already knew where they were in the canal with enough accuracy to know they were in trouble.
    - aeonik 3y ago
      They use Lidar to map jungles from airplanes, so the range can be pretty far. I'm not sure what the relationship between resolution and distance is though. I'd assume it's inverse square combined with the Raleigh criterion, or something like that. I'm going to have to research it more though. https://techcrunch.com/2022/05/27/lidar-exposes-the-remnants-of-an-overgrown-ancient-civilization-in-the-amazon/ https://techcrunch.com/2022/05/27/lidar-exposes-the-remnants...