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Go Back   SailNet Community > Skills and Seamanship > Seamanship & Navigation > Jack lines and tethers
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Seamanship & Navigation Forum devoted to seamanship and navigation topics, including paper and electronic charting tools.


Thread: Jack lines and tethers Reply to Thread
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Topic Review (Newest First)
12-29-2011 06:17 AM
smurphny
Quote:
Originally Posted by casey1999 View Post
When single handing, I always teather, but still a concern is you go over the side, then how would you alone get back on board? On a small boat (narrow beam), even with the jack line tight and in the middle, you could still find your self over the lifelines. I have been looking at a boarding ladder I could rig off the side of the boat towards the stern in the hopes of being able to get to it, pull it down, and climb aboard. Most ladders have rungs and I could imagine having my fingers and feet pinched and maybe skin removed as I am trying to climb aboard this wild bucking horse (the boat). Recently I found these "Sea Steps" which might work. I plan to buy two, rig on either side of the boat with bungee cord normally holding them up and with a release line maybe just draging in the water. It could also be used in a man over board situation when crew is aboard.
Boarding steps & ladders - great prices!
Last year I mounted a small telescoping ladder on the transom. It folds up nicely against the angled transom and interferes with nothing. Being on the transom, it is not a problem when heeled, unlike the standard side-mounted ladder which, of course, cannot be left in place. I have a ring and a snap shackle on it that can be pulled from the water to release it. It works well enough to get up on boat if I've gone in or have just forgotten to drag out the regular ladder before jumping in for a swim... oops. It's a little hard to climb up the freely hanging steps and over the stern rail but it does work. Before mounting the ladder, I kept a line with three foot loops withing reach from the water.
12-29-2011 05:59 AM
smurphny Just trying to be funny....sorry but would like to find a better, simpler way to stay attached to the boat. As I mentioned in a previous post, it's probably not the big storm that will put you in the water watching the boat sail away but some stupid misstep on a perfectly nice day when you're not paying attention and haven't bothered with the pesky tether.
12-28-2011 10:26 PM
aeventyr60
Quote:
Originally Posted by smurphny View Post
You know, Jack, I'm thinking that if I sew in a 1" X 5/16" ring at the end of each deck length, I could put two VERY short tethers, like 4", right on my harness which would allow switching as I move fwd and aft and never allow enough slack to go beyond the edge of the deck at the harness point. I'm going to have to get a scale dwg out to see if this would work out. This issue of tethering is really my biggest concern followed by getting knocked in the head with the boom and then getting run down by a tanker while I'm trying to catch 40 winks... then there are all those floating containers.... then... I must be crazy to be doing this
Geez, relax a little, it all gets better once your out here...Put my jacklines back on for our passsage down the So. China Sea last week. dnot use them once as I just flew the working jib on the furler, no need to get out of the cockpit...
12-28-2011 10:11 PM
jackdale
Quote:
Originally Posted by smurphny View Post
then there are all those floating containers.... then
I have to spend my next cruising season worrying about tsunami debris on the west coast of Vancouver Island.

I am a little confused by your design proposal. I am a visual kind of guy.
12-28-2011 09:15 PM
smurphny
Quote:
Originally Posted by jackdale View Post
My preferred tethers have double action clips for the jacklines etc., and a snap shackle at the harness.

I have had single action tethers come loose. Never had a double action tether inadvertently attach itself.
You know, Jack, I'm thinking that if I sew in a 1" X 5/16" ring at the end of each deck length, I could put two VERY short tethers, like 4", right on my harness which would allow switching as I move fwd and aft and never allow enough slack to go beyond the edge of the deck at the harness point. I'm going to have to get a scale dwg out to see if this would work out. This issue of tethering is really my biggest concern followed by getting knocked in the head with the boom and then getting run down by a tanker while I'm trying to catch 40 winks... then there are all those floating containers.... then... I must be crazy to be doing this
12-28-2011 08:15 PM
jackdale
Quote:
Originally Posted by smurphny View Post
I really like that idea Jack! My main gripe with the double tether is in having to lose attention to what I'm doing (getting from point A to point B, where I am holding on, balancing, etc.) while fiddling around with the two snap shackles that want to get hung up on everything if left to their own evil devices. Do you have your snap shackles on each lead or on the harness? It would seem that two, directly attached to the harness, would work. This sounds like a good way to get rid of my jacklines completely. One well placed pad eye with a piece of webbing, centered, just forward of the dodger would also serve as a purchase to hold onto while clearing the dodger where there is NO solid handhold and always a balancing act.
My preferred tethers have double action clips for the jacklines etc., and a snap shackle at the harness.



I have had single action tethers come loose. Never had a double action tether inadvertently attach itself.
12-28-2011 06:38 PM
casey1999 When single handing, I always teather, but still a concern is you go over the side, then how would you alone get back on board? On a small boat (narrow beam), even with the jack line tight and in the middle, you could still find your self over the lifelines. I have been looking at a boarding ladder I could rig off the side of the boat towards the stern in the hopes of being able to get to it, pull it down, and climb aboard. Most ladders have rungs and I could imagine having my fingers and feet pinched and maybe skin removed as I am trying to climb aboard this wild bucking horse (the boat). Recently I found these "Sea Steps" which might work. I plan to buy two, rig on either side of the boat with bungee cord normally holding them up and with a release line maybe just draging in the water. It could also be used in a man over board situation when crew is aboard.
Boarding steps & ladders - great prices!
12-28-2011 03:34 PM
Slayer
Quote:
Originally Posted by jackdale View Post
Jacklines and tethers are used anytime you leave the companionway.

As you move around you attach the new one BEFORE releasing the old one.

You want to abide by this especially with what recently happened to the lady on Triple Stars during the NARC Rally. My biggest fear about sailing is being left behind.
12-28-2011 01:34 PM
casey1999 One thing to keep in mind is the sunlight degredation of the jack lines. I rinse off salt water, dry, then store inside the boat when not in use. Depending your location the loss of strength of the jack line could be significant when exposed to a few months of tropical sun.
12-28-2011 01:20 PM
smurphny
Quote:
Originally Posted by jackdale View Post
Rather than having individual tethers, I place tethers strategically; in the cockpit, base of the mast, and on the jacklines. As you move around you attach a new tether to your harness before removing the old one.

The cockpit mounting points are U bolts.
I really like that idea Jack! My main gripe with the double tether is in having to lose attention to what I'm doing (getting from point A to point B, where I am holding on, balancing, etc.) while fiddling around with the two snap shackles that want to get hung up on everything if left to their own evil devices. Do you have your snap shackles on each lead or on the harness? It would seem that two, directly attached to the harness, would work. This sounds like a good way to get rid of my jacklines completely. One well placed pad eye with a piece of webbing, centered, just forward of the dodger would also serve as a purchase to hold onto while clearing the dodger where there is NO solid handhold and always a balancing act.
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