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General Diving Forum Anything which is diving related but not covered by the other forums. Want to make an announcement, found a cool diving video, need to blow of steam, whatever - it's open to you.
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June 29th, 2006, 06:10 AM
| #1 (permalink) |
| New Member  Join Date: Dec 2005 Location: Seattle
Posts: 815
  | Does anyone know of an online resource for how to do a proper primary tie-off? It seems that these days, I'm frequently wanting to tie off a bag for a vertical reference, or (in one of our more popular local sites, which has just changed its rules) tie off a dive flag. On our Fundies checkout dive, I tried to do this and the instructor came and redid it for me to see, but frankly, it was underwater, and not that much stuck. I'll eventually hook up with him or someone else who knows how, but it would be nice to find a resource and have a chance to practice on land. |
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June 29th, 2006, 11:03 AM
| #2 (permalink) |
| New Member  Join Date: Nov 2005 Location: London, UK
Posts: 705
| If you’re talking about a “proper” primary tie-off you’re normally talking about running a reel (usually in a cave), in which case you’re starting with a fully wound in reel. This normally involves putting the end of the line around your chosen station, passing the reel back on itself through the loop and then securing this with a couple of wraps in a direction such that it locks rather than spins the wraps loose. However, in your case you already have a long length of the reel wound out (i.e. to the bag on the surface), so you won’t be able to do that. You could do something similar to a secondary tie-off, which is a double wrap and then a lock, but in your case following that by locking the reel down and letting it hang with the weight of the reel holding the line lock in place. There are a series of excellent articles by the guys in Mexico which appeared in DIRQuest. Part 2 has the specifics of tie-offs (and some pictures in case my description don’t make sense…). That appeared in Quest Vol 5, No.4 (Fall 2004) pp. 28-32. Like I said though, that’s all related to making tie-offs for running a reel, specifically in a cave environment. As you’re making only one tie-off, you could just use whatever holds the reel in place and is easy to undo without tying yourself in knots. I don’t think there are any rights or wrongs here. Also, depending on what you’re trying to affix the reel to, you could employ something like what is used to tie a reel into another line - take the whole reel and pass it around the other line twice then clip the double ender on the reel back onto its own line, secured with a couple of wraps through the clip. That might work if your station was a section of post/pipe that wasn’t open at either end, for example. HTH Joe |
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June 29th, 2006, 03:39 PM
| #3 (permalink) |
| wet behind the ears  Join Date: Nov 2005 Location: Seattle, WA
Posts: 1,011
 | Quote: (Originally Posted by Joe Hesketh) Also, depending on what you’re trying to affix the reel to, you could employ something like what is used to tie a reel into another line - take the whole reel and pass it around the other line twice then clip the double ender on the reel back onto its own line, secured with a couple of wraps through the clip. That might work if your station was a section of post/pipe that wasn’t open at either end, for example. Lynne this is the typical approach here.deploy SMB clip line to spool with double ender wrap spool twice around object wrap line going from object to SMB through unclipped hook of double ender twice RJ PS This is not really a primary tie, that's used with a reel when running line horizontally. A primary tie won't work with a SMB + spool because you haven't got a loop (its up with the SMB) in hand. Last edited by rjack; June 29th, 2006 at 03:42 PM.. |
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