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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Jackline system
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Topic Review (Newest First)
05-01-2013 10:50 PM
pdqaltair
Re: Jackline system

Quote:
Originally Posted by ccriders View Post
What would be unsatisfactory about 1/2 inch nylon three strand run from port stern cleat through bow cleat to starbard stern cleat? Talking about a 28' boat. Can hook a double teather to port and starbord when in cockpit and unclip one and go forward with the other. The stretch would keep you from breaking your back when falling. Rolling under foot would be minimized as it would lie along the coach house, not in the middle of the side deck.
The only issue I see is unable to clip on before leaving the cabin.
* Nylon is too stretchy for a monohull. With polyester (Say-set or equiv.) it should work.
* Cabin top can work, and yes, the rolling issue goes away. You will have a few step-overs, though. Personally, I like permanent set-ups, as when you need the lines is no time to be setting them.
05-01-2013 10:05 PM
Barquito
Re: Jackline system

Quote:
I probably am over thinking. I come from the climbing world where, except for a "daring" few, the idea is to stay connected at all times.
If you are single handed, and fall overboard more than a few miles off shore, you will be in trouble. When I am out by myself on the water, I like to think of the boat as being suspended 100' off a concrete parking lot. If you fall over you will die, just like when it is in the water... you will just have a little longer to think about it in the water.
05-01-2013 09:42 PM
JonEisberg
Re: Jackline system

Quote:
Originally Posted by Joel H. View Post
Jon, I think yours is probably the best advise and approach.
Thanks, but anyone reading this thread should read Rich H's Post #12 again... and then again... That sort of advice is worth more than all the other posts in this thread combined...

Quote:
Originally Posted by Joel H. View Post
It seems though, that I am most vulnerable moving from the cockpit to the shrouds/mast. Using a lanyard long enough to cover the distance between the cockpit anchor and the mast anchor-point concerns me.
Yup, that's pretty much the case on just about every boat out there, that move out of, or back into, the cockpit... One of my biggest gripes about many modern production boats, how poor the ergonomics of that part of the deck can be...

Quote:
Originally Posted by Joel H. View Post
Just so you understand, my main motivation is the 40 deg water that await me if I screw up.
A legitimate fear, to be sure... However, if I ever find myself in the water watching my boat sail off without me, I'd rather the water be 40 degrees, as opposed to that tropical bathwater filled with things that might eat me...(grin)

Quote:
Originally Posted by Joel H. View Post
I probably am over thinking. I come from the climbing world where, except for a "daring" few, the idea is to stay connected at all times.
Also I like the idea of finding ways to use all the neat climbing gear i already have.
Joel H.
You're certainly right to take that approach, of course, it will serve you well...

However, I think probably the greatest risks posed to singlehanders typically come from fatigue or exhaustion, more than anything else... That's why simplicity rules the day with this sort of stuff, in my opinion. Systems that necessitate alertness, deftness, concentration, etc., can so easily come back to bite you in those times when you might be operating at less than 100%...
05-01-2013 06:48 PM
ccriders
Re: Jackline system

What would be unsatisfactory about 1/2 inch nylon three strand run from port stern cleat through bow cleat to starbard stern cleat? Talking about a 28' boat. Can hook a double teather to port and starbord when in cockpit and unclip one and go forward with the other. The stretch would keep you from breaking your back when falling. Rolling under foot would be minimized as it would lie along the coach house, not in the middle of the side deck.
The only issue I see is unable to clip on before leaving the cabin.
05-01-2013 06:28 PM
Joel H.
Re: Jackline system

Jon, I think yours is probably the best advise and approach.

It seems though, that I am most vulnerable moving from the cockpit to the shrouds/mast. Using a lanyard long enough to cover the distance between the cockpit anchor and the mast anchor-point concerns me.
Just so you understand, my main motivation is the 40 deg water that await me if I screw up.
I probably am over thinking. I come from the climbing world where, except for a "daring" few, the idea is to stay connected at all times.
Also I like the idea of finding ways to use all the neat climbing gear i already have.
Joel H.
05-01-2013 06:22 PM
Brent Swain
Re: Jackline system

I use 1/4 inch 1x19 rigging wire for a jack line . With a nicopess eye in each end, it doent roll or stretch. Been there for 29 years.
05-01-2013 06:04 PM
jimgo
Re: Jackline system

What about just using a ratchet from a roof tiedown strap for cargo? Something like Harbor freight sells. They have a high load tolerance.
05-01-2013 05:53 PM
Joel H.
Re: Jackline system

Lots of great feedback here, thanks guys!
As to the earlier question: Unless I put something in to lock the hasp between the hatch and the drop boards, it could have a tenancy to push the hatch open. But actually it seems to tension down on the hatch, as much as anything, and secures it's position. Of course, that could change as conditions worsen.
As for the weakening caused by the Tibloc device, my goal with this system is to not fall far on the system, by maintaining minimal slack at all stations.
But let me be clear, I'm not married to it yet.
I think the jackline tensioning part is sound, whether I stick with the lanyard portion is still open to debate.
I certainly appreciate any and all thoughts on the matter so keep them coming.
Cheers,
Joel H.
04-30-2013 10:32 PM
TakeFive
Re: Jackline system

Quote:
Originally Posted by Faster View Post
...Actually, combined with a harness tether I suppose it could work out OK...
Quote:
Originally Posted by RichH View Post
unnecessary 'complexity'. KISS
Like I mentioned, clipping the halyard on was not an idea that I thought up in my naÔvetť. It was suggested by a couple authors of popular cruising books, and has apparently been proven to be effective for small boats where the narrow foredeck makes it difficult to size a harness with enough room to work without being long enough to be dragged in the water.

This evening I switched out the snap shackle on my spare halyard with a quick release shackle like the one on my tether, and adjusted its length to allow me to go to the furler drum if needed, so it's ready to go. I'll see how complex it is and either use it or abandon it (or hopefully won't have to go to the foredeck at all while underway). But meanwhile, it's attached to a stanchion available as needed, just like it has been for the last 3 years.
Quote:
Originally Posted by RichH View Post
...if you use only a 'climbers' harness, if you go overboard and get dragged along youll be dragged mostly 'foot first' or 'jackknifed'..
I never suggested a climbers harness. That must have been someone else. The harness I bought has the rings and horizontal chest strap level with the base of my armpits, which is a very comfortable location for me.
Quote:
Originally Posted by JonEisberg View Post
...After a fair bit of experimentation with an assortment of solutions, I've arrived at the conclusion that fixed tethers at the base of the mast, and another in the cockpit, are the way to go on boats under 30 feet or so...
I'll be singlehanding for the first time this weekend, so that's why I'm using harness/tether for the first time. I'm taking a "kitchen sink" approach with more ways to attach than I will probably use. But I'll see what works best and what's more trouble than it's worth, and then strip out the ones I don't need. I've rigged clipping points at my steering wheel, traveler, and mast and will add a couple fixed tethers too. At present I still need a jackline to get from traveler to mast and mast to foredeck.
04-30-2013 07:29 PM
pdqaltair
Re: Jackline system

* The Tybloc will reduce the line strength to about 2000 pounds, based on the testing I've seen. Probably OK for a short tether, but too low for a tight jackline.
Sail Delmarva: Sample Calculations for Jackline Stress and Energy Absorption

* Seems too fiddly to use in rough conditions. I would favor short tethers (3 feet) and conventional jacklines, even on a 27-foot boat. The adjustable tethers I might like. I use dual length (3'/6') tethers and they suit my boat fine, but I would go shorter on a smaller boat, perhaps 2'/4'.

* Look at the Kong Tango. Tango Carabiner : Rock Climbing Gear : Rockclimbing.com. I've been using these for a while. Fast.

I've used Tyblocs climbing (hauling and to prevent slack from sliding back when simulclimbing), but they really aren't meant to take fall impact. No accender is.
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