----- Original Message ----- From: "Don Burke" <donburke56@ne*.ne*> | | If I'm hanging off a bag, I'm probably drifting, which means I either didn't | make it to the wreck or somehow got lost on the bottom. | | In such a case there would be no problem with being attached to the bottom, | so no problem with relative current. | | If I'm hooked to a wreck, I must have seen it and seeing my depth guage is | unlikely to be a problem. I don't understand this? How are you attached to the bottom? Is not the reel in your hand and the bag on the surface & you reel slowly up to the surface, completing stops as required, with your buddy a few feet away doing the same? <snip> | The real reason for the markings is to measure horizontal distances on or | near the bottom. In this neck of the woods (Norfolk, VA area), sorting | through debris fields at much less than 100 feet in about 15 foot vis is | quite common. I'd really like a decent system to figure out how far off the | tie-in I am. Why have you got to get back to the tie-in? What do you do if the tide turns & you can't get back to the tie-in? don't you use 1/3rds as the distance limit? | | The goal is to obtain said markings without reducing the line's utility as a | safety device. If the utility of the line can be improved, I'm all for it. abolutely - the reel I use is the EE 400' explorer. Perfect as a distance reel & perfect as ascent reel. (I use a spool as a back-up) <snip> | | I can't see myself using such a system. Why no support divers? My buddy is the support diver. Using the yellow bag is just one option, in the situation that the O2 has failed. I could also do one of the following: carry on the 50% & adjust the stop times. wait for buddy to finish their 20' stop then use their O2. | | As far as the scenario of drifting, lost, blind, low on gas with a deco | obligation, no support divers, lost buddy, and a bum depth guage goes, (or a | combination of three or four of these things) perhaps the gene pool would be | better off if I didn't survive a dive I planned so well. If I survived, the | boat would probably get hit by a meteor anyway. :) | | Don I was questioning the validity of putting marks on the line, or worst still, introducing a failure point (adding knots which *could* jam a reel). We have been diving the DSMB/reel system in the UK for years. We don't seem to have the incidents that you guys have with deep wreck diving in cold tidal waters. There again, we don't send people down the line, solo, to tie a line to the wreck (our skippers are able to single handedly 'shot' the wreck & recover it again after the dive) We also avoid ladders - preferring hydraulic lifts, to save stress on exiting the water http://www.wdi.co.uk/divetime/Art/DTlift_1.jpg regards, Dave -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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