mariner knot

emr

emr

Location
WI
has anyone ever used a mariner knot in tree care? if so, what do you use it for, and how does it work? i saw this knot in a book that i have for rock climbers. i was just curious if it carries over to what we do.
 
I've tried it a few times...mostly just to hang off it and see how it works. I'm sure we could think of an appropriate use for it, but the knot sort of scared me. Fine if you're hanging there looking at it, but it just seems like it could undo itself given the wrong circumstance.

love
nick
 
It's a load release hitch. If you wanted to release something under full load. Climbers use it for tranfering the weight of haulbags from one line to another. Easier then trying to hoist them and unclip.
 
it is the knot that tom linked up to.
can someone explain how it works. for some reason, i look at it and cant figure figure out even the idea of the knot. i dont know why it is so confusing to me, but it is.
 
Maybe if appropriate slings were used, you could used it drop a huge piece of wood into it, then hook it to the speed line, then undo the mariners knot and let it go down the speedline.

Just a thought
 
This is used quite often in rescue situations. Mostly 9mil cord. Used primarily for load release. If you had to release a fully loaded line onto another system you would simply unwrap it. I typically use a munter hitch on the carabiner itself followed by the mariners wraps. It could be used for a SRT system where you wanted to lower a climber instead of cutting to rope to transfer to another system. Better make sure it's burly and the end is clipped off.
 
I mentioned it in the Killer Bees thread. I've tried it and it works well. Only instead of a prusik loop, use a single strand doubled. I can't resize pics so unfortunately i can't show.
 
[ QUOTE ]
I mentioned it in the Killer Bees thread. I've tried it and it works well. Only instead of a prusik loop, use a single strand doubled. I can't resize pics so unfortunately i can't show.

[/ QUOTE ]

Go ahead and post the pics. Someone here may be able to resize them and at least people with high speed connections will be able to see them.
 
Apologies to dial uppers and for not rotating it first.

I'll post a close up.

I used my redundant footlock prusik. I'm going to cut the knot off it. This way, when lowering, there is no loop to catch on a peg and stall the system. The krab sits there for the ride after the prusik cord pulls through the krab and up the tree. If the prusik knot hits resistance, it'll slide.

This is actually a muenter-mariner. The original mariner is a couple of wraps on the karabiner. instead i use a muenter for more control. The extra wraps then arent really necessary because of the muenter holding power. A mule can be used to lock it off instead. I also tie a marlin spike in the rope behind the prusik in case it slips.
 

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Thanks Mark!
Glad you like it Alves. It was a development from Mark Chis' technique in Killer Bees. I joined the ends of rope together with an overhand knot with long tails - rides over obstructions much easier, and wasn't difficult to untie (another mountaineering technique). Makes my Petzl ID pretty much redundant now for work, but its great for novices to train with when using the RAD or descending a fixed line. I prefer a gri-gri as its lighter. I'm going to put a gri-gri as an adjuster on my lanyard - its always there when I need it for descending/working from SRT that way (much more versatile than a Grillion). /forum/images/graemlins/cool.gif
 
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