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n a message dated 99-08-26 04:52:49 EDT, ststev@un*.co* writes: >There really is no reason to tie into a wreck for an ascent. (For some reason, NY/NJ divers seem to feel more comfortable when they're tied to something. Hmmm, that could go to explaining the bondage wings..., but I digress.) < I would seriously think about that one again. I don't care how good the crew is, I do not want to be floating in the open ocean in 6' seas hoping they saw my bag surface 300 to 400 ft away in the whitecaps and spray in an emergency. a 20 minute hang in the current and rough seas is going to make it very difficult to be found. A bag tied to the wreck, keeps you on the wreck, the Coast Guard, and dive boat have the GPS coordinates for the wreck, and know right where to find you. If the boat broke loose, and 10 divers are in the water, they can back off, to avoid injuring a surfacing diver, and collect everyone in one shot when they surface, or get close enough for the divers to swim, or send a rescue swimmer with a tow line. >On wrecks, ordinarily the ascent and deco is performed along the anchor line, unless strong current warrants shooting a bag to do a drifting deco, or if you return to the anchor line to find it is not there, you shoot the bag. Your surface personnel should be aware of their position and if their anchor is dragging, and have responded accordingly. They should have the chase boat ready and lookouts posted to spot your bag. Sound excessive? Then you are not diving with adequate surface support.< SOP in the NE, except for drifting deco, this is not done, jonlines are utilized to deal with excessive current. The current does not reach speeds experienced in your area. >As Jim mentioned, the biodegradeable sisal line that is typically employed on the Jersey uplines has a tendency to become weak and fail at the worst possible time - in an emergency. Braided nylon line or equivalent is a better choice.< Sisal is not typically employed, nor has been for years, nylon is the choice for it's strength, shock rating, and non biodegradable characteristics. >If 1/16 is unsuitable for the environment, such as in wrecks, then use larger or more durable line - just put it on a well designed reel instead of the Jersey spool. The reel is used for laying line during a penetration, and for deploying a bag if necessary. One tool for two functions - starting to make sense? The reel also allows deployment with one hand only, leaving one hand free to deal with emergencies. It stows easily and cleanly, and is deployable in seconds. < Sounds great, now tell me, when you have 300' of line laid from your reel with 350' on it, and an emergency ascent is called for in 150' of water, how good is that reel to you? I would love to see the one handed deployment while also dealing with an emergency, how about concentrate on the emergency first with two hands, and your entire brain, then get your ascent line in place. I am not saying a reel is not acceptable for use as an emergency upline, I do and have used mine. However, when a penetration is called for, or I am running a line on a wreck for navigation purposes, a single reel cannot be relied on exclusively, a secondary means of establishing a secure upline is needed. Jersey uplines have also been configured in recent years to take up no more space than a primary reel, and there have been a few good threads on here discussing placement and deployment. The point here is that drifting in the open ocean by choice is not the proper way to go in an emergency. Kevin On Wed, 25 Aug 1999 14:09:28 -0400, Paltz, Art wrote: >Sean, > >I think one of the reasons you don't see them used is because the divers are >doing drift diving. At least for NY and NJ the reason we have so many great >wrecks in one concentrated spot is because this area is the entrance to NY >and Newark/Elizabeth harbors. Thinking that an approaching ship is going to >be able to see your dinky lift bag or sausage is nuts. The dive boars >anchor into the wreck site. Drifting means the boat's got to pick you up. >Very difficult to do when the boats got other divers in the water. > >A container ship hit Ambrose Light tower a few years back. It stands out of >the water about 150 feet and is probably 75 foot by 75 foot at the base >(probably bigger). If you think they'll see a free floating bag and worry >about it you'd be fish food. > >Using a wreck reel with 1/16 inch line on it won't really cut it either. We >regularly send up artifacts on bags and tie them into the wreck with wreck >or cave line and about 50% of the time we end up chasing the bag down cause >the line has been cut on the wreck. I don't know about the wrecks in your >area but in the NE they are all rusty and sharp. It's easily cuts through >thin line quickly. > >Some say always use a wreck reel and tie in near the anchor line. This is >also a good option assuming that a). the anchor line will be there when you >return and b). your wreck line won't accidentally be cut. Anchors come >dislodged from the wreck even if they are tied in or have permanent >moorings. I've also seen divers get tangled in others wreck line and >instead of waiting for their buddy to untangle them they whip out the knife >and cut it. This naturally poses a problem to the diver expecting the wreck >line to lead them back to the anchor line. I have in this situation re-tied >the persons wreck line. > >Not bashing just giving the reasoning for carrying an up-reel of some type. >I really don't want to start up another "Jersey Up-Reel" thread. This one >was tiresome last time. > >Art. > > > -----Original Message----- > From: Sean T. Stevenson [mailto:ststev@un*.co*] > Sent: Wednesday, August 25, 1999 1:41 AM > To: goindown@be*.ne* > Cc: George Irvine; Jim Cobb; techdiver@aquanaut.com > Subject: Re: Jersey Up Line > > I can't tell if this is a tongue in cheek sarcastic reply or >if this > guy really didn't get the joke. If it is the latter case, >might I > suggest quitting diving and taking up golf... > > Chris, seriously... these upline reels are completely >unnecessary. > I'm guessing you are diving on the Atlantic coast? Take a >look at how > everyone else in the world does this and ask yourself why >you do not > see these upline reels used anywhere else. > > -Sean > > > On Tue, 24 Aug 1999 17:18:55 -0400, Chris Gregory wrote: > > >Would that same buddy be there to retrieve it should you >need to shoot a > >bag, and if he's not available what are the "DIR" >alternatives? > >Chris > > > > > > > >> -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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