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maggie, i have been doing this stuff for a few years now. i have been in some pretty shitty conditions. i will have to sit down with janet, to try to figure out the math, to get the size of a wave to go by that will take you from 15 fsw(if it's rough you wont hang at 10fsw) to raise you to the surface let alone hit the bottom of the boat(quite a trick if there is any scope on the anchor line). the plain fact is that for you to be yanked around by your Jon Line it means it is too short for the conditions. when it is really rough out we let more scope out to relieve the tension on the boat & the line. one such situation happened a few years ago on a Doria dive. while ascending (at about 30 or 40 ft) i found the line going out. my depth went down & i had to move up the line.Capt Steve gradually let out about 400 ft of line. it was almost horizontal. i had a 15 ft Jon line & let all the air out of my suit & bc & hung strait down. i was clipped in to my harness i kept my hand on the clip (its easier than holding on by your fingers) i can release the clip easily if needed. when i got out of the water there was still one person left on the line "hanging". he had a Jon line that was too short for the situation (when the boat dropped between waves he was above the bow in the wave) his line was only 4 or 6 ft long (his name was Jon by the way). it was about as rough as i have been on the ocean & still been in the water. it would have been impossible for anyone to have been dragged up & down the distances you suggest or "hit the boat"! hank In a message dated 8/12/99 2:46:10 PM Eastern Daylight Time, mmowens@pa*.co* writes: << f I had to choose between letting go of the line or breaking all of my fingers or getting smashed into the hull of the boat as it comes crashing down while I am jerked up, I would rather let go of the jon line and then figure out what to do. Obviously, letting go of the jon line in a heavy current would be my last resort. In fact, I have never had to let go of the jon line, but I would like to retain the option of doing so on an instant's notice. Murphy applies. The day I attach the thing to myself would be the day I needed to let go of it in a hurry. >> -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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