Join Date: Oct 2009
Location: Swarthmore, PA
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Re: Double or single lifelines?
...I can tell you that you probably won't need to worry about it breaking. The stanchions will absorb a lot of the shock load. I just splice mine to the ring on the pullpits or lash them there. I'm using 1/4" line which works really well. 8600 lbs breaking strength is a little much and I'll probably drop it to 3/16 when I replace it. But the stuff is cheap and easy to splice, it's not like it takes 1/2 a day to change them out, or longer like it would w/ steel....
8600 lb is probably more than needed, but before you go with 3/16" line remember that the tension on the line will be waaaay more than your body weight. You need to do the geometry here:
Also remember that the rated strength is for new line. As soon as it gets UV, weather, and chafe at the contact points, your actual tensile strength goes down.
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1998 Catalina 250WK Take Five (at Anchorage Marina, Essington, on the Delaware River)
1991 15' Trophy (Lake Wallenpaupack)
1985 14' Phantom (Lake Wallenpaupack)