Looking at the mid line spreaders to grow line attachment step of the gear prep course. Has there been any cases of the spread bar interacting with the grow line? or the soft shackle being worn due to it's freedom of movement around the metal loop?
@iskander_bond we have seen some chaffing at the mid-line spreader bars. This has resulted in seed-string failure, but we have never lost a grow-line. I like to make that connection as tight as possible to limit movement.
@david_bailey thanks for your response. I thought the photo looked off, it could be an idea for someone to change it if we are seeing chaffing in that configuration. If there has been enough wear to get through the twine, it will eventually result in a failure of a grow line with year on year use or more exposed sites. Your solution is good, do you implement it via lashing or a configuration of the soft shackle that allows it to pull tight, or some other way?
Iskander, as far as I'm concerned, that matter remains a work in progress. I've seen lots of soutions but the simplest one is using a piece of scrap line to make a semi-tight lashing that can be cut rather easily at harvest time. Done right, this can happen without losing any of the lashing into the water and the whole thing can ge cleared away during off-season maintenance. More clever solutions have been tried but so far seem to get buggered up due to fouling. Cliff
@clifford_goudey thank you for the insight. It is an issue we are still testing solutions for at our site on a rig comparable to the 5 line array. Although it can be solved in many ways, there is still work to be done to finalise a method that allows for a suitable deployment rate. I am surprised a semi-tight lashing would work, I would have thought it would need to be as tight as possible to prevent the movement that would cause chaffing. Making such a lashing very tight slows deployment rates, if a semi-tight lashing works it would make this solution more appealing. Do you have an idea of the exposure of the site and rope types used for both the grow line and lashing where this semi-tight method has worked? I would be interested in hearing more about these less simple and more clever solutions that have failed, it is always good to not cover the same ground or re-examine under different circumstances.
@iskander_bond we have seen some chaffing at the mid-line spreader bars. This has resulted in seed-string failure, but we have never lost a grow-line. I like to make that connection as tight as possible to limit movement.
@david_bailey thanks for your response. I thought the photo looked off, it could be an idea for someone to change it if we are seeing chaffing in that configuration. If there has been enough wear to get through the twine, it will eventually result in a failure of a grow line with year on year use or more exposed sites. Your solution is good, do you implement it via lashing or a configuration of the soft shackle that allows it to pull tight, or some other way?
@david_bailey thanks for your response. I thought the photo looked off, it could be an idea for someone to change it if we are seeing chaffing in that configuration. If there has been enough wear to get through the twine, it will eventually result in a failure of a grow line with year on year use or more exposed sites. Your solution is good, do you implement it via lashing or a configuration of the soft shackle that allows it to pull tight, or some other way?
Iskander, as far as I'm concerned, that matter remains a work in progress. I've seen lots of soutions but the simplest one is using a piece of scrap line to make a semi-tight lashing that can be cut rather easily at harvest time. Done right, this can happen without losing any of the lashing into the water and the whole thing can ge cleared away during off-season maintenance.
More clever solutions have been tried but so far seem to get buggered up due to fouling.
Cliff
@clifford_goudey thank you for the insight. It is an issue we are still testing solutions for at our site on a rig comparable to the 5 line array. Although it can be solved in many ways, there is still work to be done to finalise a method that allows for a suitable deployment rate.
I am surprised a semi-tight lashing would work, I would have thought it would need to be as tight as possible to prevent the movement that would cause chaffing. Making such a lashing very tight slows deployment rates, if a semi-tight lashing works it would make this solution more appealing. Do you have an idea of the exposure of the site and rope types used for both the grow line and lashing where this semi-tight method has worked?
I would be interested in hearing more about these less simple and more clever solutions that have failed, it is always good to not cover the same ground or re-examine under different circumstances.
@clifford_goudey thank you for the insight. It is an issue we are still testing solutions for at our site on a rig comparable to the 5 line array. Although it can be solved in many ways, there is still work to be done to finalise a method that allows for a suitable deployment rate.
I am surprised a semi-tight lashing would work, I would have thought it would need to be as tight as possible to prevent the movement that would cause chaffing. Making such a lashing very tight slows deployment rates, if a semi-tight lashing works it would make this solution more appealing. Do you have an idea of the exposure of the site and rope types used for both the grow line and lashing where this semi-tight method has worked?
I would be interested in hearing more about these less simple and more clever solutions that have failed, it is always good to not cover the same ground or re-examine under different circumstances.