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Post by chiraldude on Aug 13, 2017 10:33:29 GMT -5
So when they put down pots, why don't they use some sort of crab detection device? Put down a bunch of test pots across a wide area and when they get tripped, they let go a float with a radio transmitter that signals the position. This is the 21st century, why they using 20th century technology? Is it against the rules to track the crab this way?
This could be done many ways, trip levers, camera, etc...
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Post by Deleted on Aug 13, 2017 12:06:18 GMT -5
Crab area always on the move, so if you did have something to detect them, they may be gone by the time you get some pots down to them.
So far any electronic detection device has not worked out.
There have been experiments with various devices, and so far nothing has been shown reliable.
I knew some guys that experimented with cameras some 25 years ago or more.
If you had an idea and were able to make it work, you could become a rich person!
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Post by doder on Aug 13, 2017 13:12:21 GMT -5
canadian opie crabbers are experimenting with led light on their pots.
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Post by greatlakesgirl on Aug 13, 2017 18:39:19 GMT -5
canadian opie crabbers are experimenting with led light on their pots. Are crabs attracted to LED light? |
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Post by doder on Aug 13, 2017 22:44:28 GMT -5
canadian opie crabbers are experimenting with led light on their pots. Are crabs attracted to LED light? i can't find the link to the article but yes. increase in catch may not justify the expense |
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Post by catchaddict on Aug 14, 2017 12:15:27 GMT -5
So when they put down pots, why don't they use some sort of crab detection device? Put down a bunch of test pots across a wide area and when they get tripped, they let go a float with a radio transmitter that signals the position. This is the 21st century, why they using 20th century technology? Is it against the rules to track the crab this way? This could be done many ways, trip levers, camera, etc...
On the show, it does seem that they do indeed use test pots. I suppose the radio transmitter idea might save them the time of pulling up the test pots right away...but...they usually gauge crab not as a toggle switch (crab are either here or they aren't) but seem to value the rate of crab per hour in the test pots. So, at some point, it seems the simplest way to get that information is just to drop some prospect pots and pull them up a few hours later.
On the Time Bandit facebook page, they have a weekly Q & A. A few months ago, somebody asked about cameras. The TB captains said that they had tried it, with little luck. |
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Post by seasick on Aug 14, 2017 14:48:07 GMT -5
Building a pot that can count every crab that goes into it and transmit the result would be technically possible, but it would probably be expensive and not very durable. And it would still have to be hauled to be moved to a new area.
You could use a ROV to go down and count the crab, or picks it up for that matter, but again it would be expensive, take up room on the boat, and since each boat would only be able to operate one at a time, I suspect that a fifty or hundred test pots would actually be more effective.
If someone created a sonar that's good enough to count the crab on the bottom, the Navy would probably define it as a weapon and anyone else would be prohibited from buying it, even if they could afford it.
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Post by catchaddict on Aug 14, 2017 23:15:46 GMT -5
Building a pot that can count every crab that goes into it and transmit the result would be technically possible, but it would probably be expensive and not very durable. I once saw a documentary on tuna fishing. They corral the tuna in a giant circular 'fence' made of net...at some point the tuna are moved from this area to another spot, and they do use an automatic counting technology to help them estimate weights for quota purposes. But tuna move fast. A crab crawling in a pot seems harder to count to me. |
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Post by seasick on Apr 26, 2018 12:06:16 GMT -5
Sig & friends launches 'Captain Sig's crab bait', which he promises will change the industry forever. They will change the world by producing and marketing this in Norway, which has relatively little commercial crab fishing (about 10,000 tons brown crab and 2,000 tons King Crab yearly) Videos in Norwegian: hnytt.no/2018/04/25/bli-med-captain-sig-pa-krabbefiske/hnytt.no/2018/04/24/dette-kan-forandre-hele-verden/?autoplay=1Highlights: * Sig only smokes a little, and will quit completely Real Soon Now. * He's celebrating his 52nd birthday Saturday. * He admitted the bait didn't work that well in Alaska, but that's only because they need to tailor the bait to each individual species of crab, and they will soon have fixed that. I must say that I'm not that impressed by the catch they got, I'm used to have my pots stuffed with brown crab no matter what bait I use, but then there's probably more fishing where they sat their pots. |
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Post by Crabolicious on May 24, 2018 3:25:24 GMT -5
canadian opie crabbers are experimenting with led light on their pots. Are crabs attracted to LED light? Crabs are attracted to cod, herring, squid, salmon, ect... |
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Post by seasick on May 29, 2018 12:01:29 GMT -5
Almost everything that lives in the sea are attracted to light. Species that lives in shallower waters, can be caught by shining a light into the water and scooping them in when they come running. In some fisheries, using light is illegal.
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