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Old 29-01-2021, 19:09   #106
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Re: Container ship dumps containers in Pacific

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Originally Posted by RiverRat37 View Post
Not only containers and whales but also submarines (Military). I know of an Eldridge-McInnis 39-footer that was hit by one in the Caribbean. It sank. All were rescued but the boat is in 600 fathoms of water now. The military, it's reported, never, ever takes responsibility for these collisions. The Sea Cloud (a four master) when it was named the Antarna and a high school training ship, was hit by one on the surface in a port, taking out the bowsprit. Navy promised to make good but I'm not sure if they ever did. There are plenty of hazards out there but the chances are still small. And how about running into a "garbage patch"? One is reported be as big as all Texas.

Whoever reported that might want to Goggle "Ehime Maru". Not only did the U.S. Navy take responsibility, but two days after the incident President Bush apologized to the world on national TV for the sinking.
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Old 30-01-2021, 08:53   #107
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Re: Container ship dumps containers in Pacific

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Originally Posted by Reefmagnet View Post
I cannot see any barriers as to why containers should not be fitted with hydrostatic low power AIS transmitters that would activate after being immersed for a few hours or even days. Cost to implement wouldn't be that great as a proportion of total container manufacturing cost.
Try to balance the cost of a container with the cost of retrieval.
New ones are cheaper.
As to hazards? We (classified) sank them with a 50 cal.
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Old 30-01-2021, 11:47   #108
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Re: Container ship dumps containers in Pacific

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Having an AIS on each container is a good start. Now, how do we get a program to locate and remove the containers? As previously posted, if left floating, they present a hazard to navigation and others may contain hazardous and toxic substances so sinking them isn't a good solution.
AIS is a non-working solution for a bunch of reasons.

1) You can't use AIS for tracking because the antenna may only be one foot above sea level limiting range to less than 10 miles. Additionally, you would need an antenna on every corner of the container to ensure that the corner that is floating can broadcast.
2) 2/3 of all EPIRB activations are false alerts. How do you prevent AIS from transmitting on a container ship carrying 20,000 containers in the open? If you use a more reliable submersion sensor, how do you know that part of the container will be submersed?
3) If the AIS is always on then it would overwhelm the system because AIS only supports 4500 channels per minute and a large container ship contains 20,000 containers.
4) A low power Class B transceiver uses about 3 watts continuous. A large 5000 mah, 3s lithium power pack provides 60 watts. That will power it for less than 2 days. A small 50ah car battery would power it less than a week.
5) In all likelihood, you will have to pay for this technology even though the container will probably sink. If it doesn't sink, the battery won't last long enough to assemble a crew, a recovery ship, steam for 5-10 days and then locate the containers.
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Old 30-01-2021, 13:22   #109
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Re: Container ship dumps containers in Pacific

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Originally Posted by Todd727 View Post
You can't. He took square footage and tried to convert it to linear footage, so he ends up with a zero width line. Maths are hard.
Yep, my math is probably rusty.
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Old 30-01-2021, 16:32   #110
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Re: Container ship dumps containers in Pacific

Machine vision on satellite photos should do the trick of finding rectangles in the oceans. I might give it a try.
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Old 30-01-2021, 16:39   #111
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Re: Container ship dumps containers in Pacific

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Machine vision on satellite photos should do the trick of finding rectangles in the oceans. I might give it a try.
It would work, especially if you looked at spectrographic reflectivity differences between the object and the surrounding water. The container should give off a specific signature, being metal.

Sold one of my businesses to AstraZeneca back in 2004, doing this exact thing for bug infestation detection in fields. Patent would only have 2 more years on it.
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Old 30-01-2021, 16:50   #112
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Re: Container ship dumps containers in Pacific

Now containers basically sink.


But many cruisers tend to leave their boats afloat during abandon. Now hit one of those on a dark night.



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Old 30-01-2021, 19:00   #113
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Re: Container ship dumps containers in Pacific

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Originally Posted by scfoster View Post
It would work, especially if you looked at spectrographic reflectivity differences between the object and the surrounding water. The container should give off a specific signature, being metal.

Sold one of my businesses to AstraZeneca back in 2004, doing this exact thing for bug infestation detection in fields. Patent would only have 2 more years on it.
Would this still work if it is partially submerged or getting washed over?
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Old 30-01-2021, 20:29   #114
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Re: Container ship dumps containers in Pacific

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Would this still work if it is partially submerged or getting washed over?
If a human eye can see it, machine vision can see it.
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Old 30-01-2021, 23:14   #115
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Re: Container ship dumps containers in Pacific

Lesson seems to be purchase a steel or aluminium boat.
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Old 31-01-2021, 04:32   #116
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Re: Container ship dumps containers in Pacific

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Originally Posted by roland stockham View Post
Never seen one in 30+ years sailing. Would be interesting to do a count of how many people here have seen a floating container with their own eyes.
And you are not likely to see either the one you are 'bout to hit so..
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Old 31-01-2021, 08:48   #117
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Re: Container ship dumps containers in Pacific

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Originally Posted by barnakiel View Post
Now containers basically sink.


But many cruisers tend to leave their boats afloat during abandon. Now hit one of those on a dark night.



b.
That is basically avoidable by keeping watch and with radar. Low lying container most likely just one corner sticking a bit above the surface is not. And I'm pretty sure a container filled with refrigirators doesn't basicly just sink..
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Old 19-02-2021, 11:27   #118
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Re: Container ship dumps containers in Pacific

ONE Apus Ready to Resume Service in Mid-March After Record Box Loss

Two months into the recovery efforts, after possibly the worst container collapse in the history of the industry, ONE is reporting continued progress with the efforts to discharge containers from the ONE “Apus”. In its latest update to customers, the container network estimates that the vessel will be available to depart Kobe, Japan in mid-March.

A total of 859 boxes have been discharged from the ship, as of February 17 ONE Reports. The operation to discharge, inspect and transload damaged containers was complicated by the precarious position of some of the boxes, when the ship arrived in Japan. The company says the work is proceeding at a steady pace and recent pictures from Kobe appear to show that much of the deck has been cleared with only a small section of collapsed stacks remaining as well as the few bays that were not damaged during the accident.


https://theloadstar.com/new-drone-fo...-first-feared/
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Old 19-02-2021, 12:55   #119
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Re: Container ship dumps containers in Pacific

Further to previous posts, KEEP THE BOXES ON THE BOX BOAT!
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Old 19-02-2021, 12:59   #120
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Re: Container ship dumps containers in Pacific

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Originally Posted by GordMay View Post
ONE Apus Ready to Resume Service in Mid-March After Record Box Loss

Two months into the recovery efforts, after possibly the worst container collapse in the history of the industry, ONE is reporting continued progress with the efforts to discharge containers from the ONE “Apus”. In its latest update to customers, the container network estimates that the vessel will be available to depart Kobe, Japan in mid-March.

A total of 859 boxes have been discharged from the ship, as of February 17 ONE Reports. The operation to discharge, inspect and transload damaged containers was complicated by the precarious position of some of the boxes, when the ship arrived in Japan. The company says the work is proceeding at a steady pace and recent pictures from Kobe appear to show that much of the deck has been cleared with only a small section of collapsed stacks remaining as well as the few bays that were not damaged during the accident.


https://theloadstar.com/new-drone-fo...-first-feared/
GordMay, to show my ignorance what is teu, a long ton, 2200#.
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