28 Aug 2007 - SQUAWK - latest and some ramblings....!
For us the Exam is looming T-2 days and counting, I dont feel very prepared and have a Goldfish memory at the moment...Be glad when its all over...We had a Good Dive Last weekend on The Fying Eagle ...read on...
AND
IMPORTANT....
And a little bit about Deep Stops and the thoughts behind using them, with all the VR3's and VYTEC's in the Club you will end up on deep stops one day, so here is how to work it out..
With the usual annoying last minute call offs we ended up with only 7 of us on the Boat...which is luxury...There were 5 from SQSAC, Stevie ,Warren ,Gavin, Tom and Ronnie, and Shane from Heriot Watt, and Steve Hickman from Glasgow BSAC.
So while the rest had a lounge about we tried to do all the Planning Navigation and Driving, Eventually!!...we arrived at the Beagle and put Tom and Gavin, and Ronnie and Steve in, after about 30 mins they had all been Safely recovered onto the Boat with much bad language from Steve who had found a beautiful little intact wine glass, but it broke up before he coud get it back on the boat...he wasnt happy!.
We then set off to Dive the Wall we found last week off Little Cumbrae, so after a bumpy trip in a Force 5 we got on site and I dropped in with Shane and Warren to measure and Survey Life on a vertical wall...not easy! but after sorting out what we were doing we surfaced after a very quick 35min Dive...Nice wall and Ronnie, Gavin and Tom came out with a bag of large Scallops.
Then round to Trail Island to do another Survey, I had never dived this site, but it is really good, very sheltered and with depths of over 40m possible it has something for everyone, lots of life and some nice small walls and shelves that step down to over 40m, good vis and we were followed around by two large wrasse, ...so we all surfaced back on the boat to more Tea and Biscuits then back to Largs for a 5pm finish..Well worh getting another Day on thei Boat, it only takes 10 but a great Skipper and he will let you dive where you want...and drive the Boat if so inclined
****************************** DEEP STOPS *********************************************
Deep Stops or Pyle Stops seem to be the way to decompress when doing a deeper Dive. It is thought that all the stop is doing is slowing your ascent to allow your tissues to off gas at a safer rate, some deco programmes will now allow you to ascend really slowly without actually stopping as long as the ascent time is the same as the stop time. Dr Richard Pyle first proposed this idea when surfacing from deep dives taking Fish Specimens he found he felt better after dives in which he had to stop to release gas from the Fishes swim bladders...so he started to experiment doing short stops at deeper depths and came up with the Theory..so they were named Pyle Stops.
The VR3 and Vytek have this facility although you can do it with any Dive Computer without being punished to severly for stopping below its recommended stop,.
Pyle stops can be calculated in your head if you are basing your dive plans on a wrist-mounted dive computer.
Eg. Dive computer says your first stop is at 9m and you are currently at 50m then your first Pyle stop is (50 + 9) =59 / 2 = 30m. Your next stop is (30 + 9) =39 / 2 = 20m. Keep doing this until the depth between your next calculated Pyle stop and the mandatory stop as indicated by the computer is less than 10m. Using desk-top software and diving to run-times, it's still easy to calculate and add in Pyle stops as waypoints on the ascent. ...
Hope this makes some sense if not get in touch and I will try and explain it, it would be an interesting exercise to see what computers do when you do deep stops, I know Ronnies Sunnto didnt punish him when Diving with a Vytek set to deep stops last weekend, and that was on a 36m dive...
Bye
So while the rest had a lounge about we tried to do all the Planning Navigation and Driving, Eventually!!...we arrived at the Beagle and put Tom and Gavin, and Ronnie and Steve in, after about 30 mins they had all been Safely recovered onto the Boat with much bad language from Steve who had found a beautiful little intact wine glass, but it broke up before he coud get it back on the boat...he wasnt happy!.
We then set off to Dive the Wall we found last week off Little Cumbrae, so after a bumpy trip in a Force 5 we got on site and I dropped in with Shane and Warren to measure and Survey Life on a vertical wall...not easy! but after sorting out what we were doing we surfaced after a very quick 35min Dive...Nice wall and Ronnie, Gavin and Tom came out with a bag of large Scallops.
Then round to Trail Island to do another Survey, I had never dived this site, but it is really good, very sheltered and with depths of over 40m possible it has something for everyone, lots of life and some nice small walls and shelves that step down to over 40m, good vis and we were followed around by two large wrasse, ...so we all surfaced back on the boat to more Tea and Biscuits then back to Largs for a 5pm finish..Well worh getting another Day on thei Boat, it only takes 10 but a great Skipper and he will let you dive where you want...and drive the Boat if so inclined
****************************** DEEP STOPS *********************************************
Deep Stops or Pyle Stops seem to be the way to decompress when doing a deeper Dive. It is thought that all the stop is doing is slowing your ascent to allow your tissues to off gas at a safer rate, some deco programmes will now allow you to ascend really slowly without actually stopping as long as the ascent time is the same as the stop time. Dr Richard Pyle first proposed this idea when surfacing from deep dives taking Fish Specimens he found he felt better after dives in which he had to stop to release gas from the Fishes swim bladders...so he started to experiment doing short stops at deeper depths and came up with the Theory..so they were named Pyle Stops.
The VR3 and Vytek have this facility although you can do it with any Dive Computer without being punished to severly for stopping below its recommended stop,.
Pyle stops can be calculated in your head if you are basing your dive plans on a wrist-mounted dive computer.
Eg. Dive computer says your first stop is at 9m and you are currently at 50m then your first Pyle stop is (50 + 9) =59 / 2 = 30m. Your next stop is (30 + 9) =39 / 2 = 20m. Keep doing this until the depth between your next calculated Pyle stop and the mandatory stop as indicated by the computer is less than 10m. Using desk-top software and diving to run-times, it's still easy to calculate and add in Pyle stops as waypoints on the ascent. ...
Hope this makes some sense if not get in touch and I will try and explain it, it would be an interesting exercise to see what computers do when you do deep stops, I know Ronnies Sunnto didnt punish him when Diving with a Vytek set to deep stops last weekend, and that was on a 36m dive...
Bye