Ellyat Record OC Dives And RGBM Schedule

[BRW]

List,

Just FYI and some are already familiar.

Mark Ellyat (UK) continues in his quest for world record OC dives
on trimix using modern deco strategies. These stratgeies include
eliminating nitrox switches (keeping N2 levels low while minimizing
isobaric N2 counterdiffusion gradients), and using pure O2 in the shallows.
Practically, this amounts to diving trimix to the shallow zone.

Mark's dive was to 1050 ft on 5/76 trimx (5% O2, 75% He, and 19% N2)
for 1 minute. Gas switches on the ascent were 14/56 trimix at 295 ft,
27/43 trimix at 138 ft, 50/23 trimix at 69 ft, EAH80 (heliox 80/20) at 30 ft,
and pure O2 at 20 ft. Mark'as actual "run time" was 417 minutes. RGBM
"run time" is 437 minutes

Here's the nominal RGBM schedule (calibrated to C&C and WKPP) for Mark's
1050 ft record dive. The settings are exactly the same as the ones for
his 850 ft dive back in late summer. In earlier communications, we had
admonished Mark to eliminate all nitrox switches and instead increase
O2 as He is decreased,while keeping N2 low and relatively constant.
And then switch to pure O2.

It works fine (as it for C&C and WKPP) and such RGBM schedules
are just further living proof and validation. This staging regimen is part
and parcel of the released NAUI RGBM Tables. And such dives are
in the RGBM Data Bank which is used for statistical deco risk analysis
and model vfalidation across the entire diving spectrum.

Regards for the Holiday Season,

Bruce Wienke
Program Manager Computational Physics
C & C Dive Team Ldr
NAUI BOD Vice Chairman Technical Diving


RGBM Mixed Gas Version/Licensed For Use Only
4/00


--Dive Sequence Number-- 1

--Scaling/Control Flags--

temperature = 303 K repet flag = 0
dive number = 1 altitude = 0.0 ft
rfac = 0.40 pfac = 1.20 bfac = 0.00
unsat = 1
surface consumption rate = 0.75 ft^3/min
phase constant = 1008.0 microns^3

--Dive Profile--

time since last dive = 24000. min
time of last dive = 0.0 min
surface breathed nitrogen = 0.79 helium = 0.00 down switches = 3

switch 1 depth = 0.0 fsw helium = 0.00 nitrogen = 0.79
speed = 60.0 fsw/min way time = 0.0 min
switch 2 depth = 10.0 fsw helium = 0.76 nitrogen = 0.19
speed = 60.0 fsw/min way time = 0.0 min
switch 3 depth = 1049.0 fsw helium = 0.76 nitrogen = 0.19
speed = -30.0 fsw/min way time = 1.0 min
trimix = 0.76 helium 0.19 nitrogen up switches = 5

switch 4 depth = 295.0 fsw helium = 0.56 nitrogen = 0.30
speed = -30.0 fsw/min way time = 0.0 min
switch 5 depth = 138.0 fsw helium = 0.43 nitrogen = 0.30
speed = -30.0 fsw/min way time = 0.0 min
switch 6 depth = 69.0 fsw helium = 0.23 nitrogen = 0.27
speed = -30.0 fsw/min way time = 0.0 min
switch 7 depth = 30.0 fsw helium = 0.20 nitrogen = 0.00
speed = -30.0 fsw/min way time = 0.0 min
switch 8 depth = 20.0 fsw helium = 0.00 nitrogen = 0.00
speed = -30.0 fsw/min way time = 0.0 min


rh = 0.0321 microns rn = 0.0353 microns
phase volume = 539.6 microns^3
xfac/sfac/efac/tfac/dfac/gfac = 11.1/0.84/1.00/0.49/1.22/1.00

--Decompression Schedule--

bottom depth = 1049.0 fsw ppO2 = 1.6 atm OTU/CNS = 2.0 min/0.02 %
bottom time = 18.5 min

depth wait tissue tension grad ppO2 OTU CNS gas
(fsw) (min) (min) (fsw) (fsw) (atm) (min) (%) (ft^3)

1049.0 - 1.0 - - - 1.6 - 2.0 - 0.02 - 246.
960.0 - 0.0 - 0.9 - 937.3 - 39.1 - 1.5 - 0.0 - 0.00 - 7.
950.0 - 0.0 - 0.9 - 929.9 - 39.1 - 1.5 - 0.0 - 0.00 - 7.
940.0 - 0.0 - 0.9 - 922.1 - 39.1 - 1.5 - 0.0 - 0.00 - 7.
930.0 - 0.0 - 0.9 - 914.1 - 39.1 - 1.5 - 0.0 - 0.00 - 7.
920.0 - 0.0 - 0.9 - 905.9 - 39.1 - 1.4 - 0.0 - 0.00 - 7.
910.0 - 0.0 - 0.9 - 897.6 - 39.1 - 1.4 - 0.0 - 0.00 - 7.
900.0 - 0.0 - 0.9 - 889.0 - 39.1 - 1.4 - 0.0 - 0.00 - 7.
890.0 - 0.0 - 0.9 - 880.4 - 39.1 - 1.4 - 0.0 - 0.00 - 7.
880.0 - 0.0 - 0.9 - 871.6 - 39.1 - 1.4 - 0.0 - 0.00 - 7.
870.0 - 0.0 - 2.4 - 868.5 - 42.5 - 1.4 - 0.0 - 0.00 - 7.
860.0 - 0.0 - 2.4 - 862.5 - 42.5 - 1.4 - 0.0 - 0.00 - 7.
850.0 - 0.0 - 2.4 - 856.2 - 42.5 - 1.3 - 0.0 - 0.00 - 7.
840.0 - 0.0 - 2.4 - 849.7 - 42.5 - 1.3 - 0.0 - 0.00 - 7.
830.0 - 0.0 - 2.4 - 843.0 - 42.5 - 1.3 - 0.0 - 0.00 - 7.
820.0 - 0.0 - 2.4 - 836.0 - 42.5 - 1.3 - 0.0 - 0.00 - 6.
810.0 - 0.0 - 2.4 - 828.9 - 42.5 - 1.3 - 0.0 - 0.00 - 6.
800.0 - 0.0 - 2.4 - 821.6 - 42.5 - 1.3 - 0.0 - 0.00 - 6.
790.0 - 0.0 - 2.4 - 814.2 - 42.5 - 1.2 - 0.0 - 0.00 - 6.
780.0 - 0.0 - 2.4 - 806.6 - 42.5 - 1.2 - 0.0 - 0.00 - 6.
770.0 - 0.0 - 2.4 - 798.9 - 42.5 - 1.2 - 0.0 - 0.00 - 6.
760.0 - 0.0 - 2.4 - 791.1 - 42.5 - 1.2 - 0.0 - 0.00 - 6.
750.0 - 0.5 - 2.4 - 772.3 - 42.5 - 1.2 - 0.7 - 0.00 - 15.
740.0 - 0.5 - 2.4 - 765.6 - 42.5 - 1.2 - 0.6 - 0.00 - 6.
730.0 - 0.5 - 4.7 - 762.4 - 44.5 - 1.2 - 0.6 - 0.00 - 6.
720.0 - 0.5 - 4.7 - 750.3 - 44.5 - 1.1 - 0.6 - 0.00 - 14.
710.0 - 0.5 - 4.7 - 738.8 - 44.5 - 1.1 - 0.6 - 0.00 - 14.
700.0 - 0.5 - 4.7 - 734.4 - 44.5 - 1.1 - 0.6 - 0.00 - 6.
690.0 - 0.5 - 4.7 - 722.8 - 44.5 - 1.1 - 0.6 - 0.00 - 14.
680.0 - 0.5 - 4.7 - 711.8 - 44.5 - 1.1 - 0.6 - 0.00 - 13.
670.0 - 0.5 - 4.7 - 701.2 - 44.5 - 1.1 - 0.6 - 0.00 - 13.
660.0 - 0.5 - 4.7 - 690.9 - 44.5 - 1.1 - 0.5 - 0.00 - 13.
650.0 - 0.5 - 4.7 - 680.9 - 44.5 - 1.0 - 0.5 - 0.00 - 13.
640.0 - 0.5 - 4.7 - 671.1 - 44.5 - 1.0 - 0.5 - 0.00 - 13.
630.0 - 0.5 - 4.7 - 661.5 - 44.5 - 1.0 - 0.5 - 0.00 - 13.
620.0 - 0.5 - 4.7 - 652.1 - 44.5 - 1.0 - 0.5 - 0.00 - 12.
610.0 - 0.5 - 4.7 - 642.7 - 44.5 - 1.0 - 0.5 - 0.00 - 12.
600.0 - 0.5 - 4.7 - 633.5 - 44.5 - 1.0 - 0.5 - 0.00 - 12.
590.0 - 0.5 - 9.4 - 628.0 - 48.0 - 0.9 - 0.5 - 0.00 - 12.
580.0 - 1.5 - 9.4 - 614.8 - 48.0 - 0.9 - 1.3 - 0.00 - 26.
570.0 - 1.5 - 9.4 - 605.7 - 48.0 - 0.9 - 1.3 - 0.00 - 18.
560.0 - 1.5 - 9.4 - 596.7 - 48.0 - 0.9 - 1.2 - 0.00 - 18.
550.0 - 1.5 - 9.4 - 587.8 - 48.0 - 0.9 - 1.2 - 0.00 - 18.
540.0 - 1.5 - 9.4 - 575.9 - 48.0 - 0.9 - 1.2 - 0.00 - 24.
530.0 - 1.5 - 9.4 - 567.5 - 48.0 - 0.9 - 1.1 - 0.00 - 17.
520.0 - 1.5 - 9.4 - 556.2 - 48.0 - 0.8 - 1.1 - 0.00 - 23.
510.0 - 1.5 - 9.4 - 545.4 - 48.0 - 0.8 - 1.0 - 0.00 - 23.
500.0 - 1.5 - 9.4 - 537.7 - 48.0 - 0.8 - 1.0 - 0.00 - 16.
490.0 - 1.5 - 9.4 - 527.1 - 48.0 - 0.8 - 1.0 - 0.00 - 22.
480.0 - 1.5 - 9.4 - 516.8 - 48.0 - 0.8 - 0.9 - 0.00 - 21.
470.0 - 1.5 - 9.4 - 506.9 - 48.0 - 0.8 - 0.9 - 0.00 - 21.
460.0 - 1.5 - 9.4 - 497.1 - 48.0 - 0.7 - 0.8 - 0.00 - 21.
450.0 - 1.5 - 9.4 - 487.4 - 48.0 - 0.7 - 0.8 - 0.00 - 20.
440.0 - 2.5 - 18.9 - 482.4 - 53.4 - 0.7 - 1.2 - 0.00 - 30.
430.0 - 2.5 - 18.9 - 473.0 - 53.4 - 0.7 - 1.2 - 0.00 - 30.
420.0 - 3.0 - 18.9 - 462.1 - 53.4 - 0.7 - 1.3 - 0.00 - 34.
410.0 - 2.5 - 18.9 - 453.1 - 53.4 - 0.7 - 1.0 - 0.00 - 28.
400.0 - 3.0 - 18.9 - 442.7 - 53.4 - 0.7 - 1.1 - 0.00 - 33.
390.0 - 3.0 - 18.9 - 432.7 - 53.4 - 0.6 - 1.0 - 0.00 - 32.
380.0 - 3.0 - 18.9 - 422.8 - 53.4 - 0.6 - 1.0 - 0.00 - 31.
370.0 - 3.0 - 18.9 - 413.2 - 53.4 - 0.6 - 0.9 - 0.00 - 30.
360.0 - 3.5 - 18.9 - 402.4 - 53.4 - 0.6 - 0.9 - 0.00 - 34.
350.0 - 3.0 - 18.9 - 393.2 - 53.4 - 0.6 - 0.7 - 0.00 - 29.
340.0 - 3.5 - 18.9 - 382.9 - 53.4 - 0.6 - 0.6 - 0.00 - 32.
330.0 - 3.5 - 18.9 - 372.8 - 53.4 - 0.6 - 0.5 - 0.00 - 32.
320.0 - 3.5 - 37.8 - 369.9 - 60.0 - 0.5 - 0.4 - 0.00 - 31.
310.0 - 6.0 - 37.8 - 359.5 - 60.0 - 0.5 - 0.4 - 0.00 - 49.
300.0 - 6.0 - 37.8 - 349.3 - 60.0 - 0.5 - 0.1 - 0.00 - 48.
290.0 - 3.0 - 37.8 - 339.6 - 60.0 - 1.4 - 4.8 - 0.02 - 24.
280.0 - 3.5 - 37.8 - 328.9 - 60.0 - 1.3 - 5.3 - 0.02 - 27.
270.0 - 3.0 - 37.8 - 319.9 - 60.0 - 1.3 - 4.4 - 0.02 - 23.
260.0 - 3.5 - 37.8 - 309.9 - 60.0 - 1.2 - 4.9 - 0.02 - 25.
250.0 - 4.0 - 37.8 - 299.0 - 60.0 - 1.2 - 5.3 - 0.02 - 28.
240.0 - 3.5 - 37.8 - 289.7 - 60.0 - 1.2 - 4.4 - 0.02 - 24.
230.0 - 5.5 - 56.6 - 283.7 - 64.2 - 1.1 - 6.5 - 0.02 - 35.
220.0 - 5.5 - 56.6 - 274.0 - 64.2 - 1.1 - 6.2 - 0.02 - 34.
210.0 - 6.0 - 56.6 - 263.8 - 64.2 - 1.0 - 6.3 - 0.02 - 35.
200.0 - 6.0 - 56.6 - 254.1 - 64.2 - 1.0 - 5.9 - 0.02 - 34.
190.0 - 6.5 - 56.6 - 243.9 - 64.2 - 0.9 - 5.9 - 0.02 - 35.
180.0 - 7.0 - 75.5 - 236.8 - 67.0 - 0.9 - 5.9 - 0.02 - 35.
170.0 - 8.5 - 75.5 - 227.0 - 67.0 - 0.9 - 6.5 - 0.02 - 41.
160.0 - 9.0 - 75.5 - 217.0 - 67.0 - 0.8 - 6.2 - 0.02 - 41.
150.0 - 9.5 - 75.5 - 206.9 - 67.0 - 0.8 - 5.8 - 0.01 - 41.
140.0 - 10.0 - 75.5 - 196.8 - 67.0 - 0.7 - 5.3 - 0.01 - 41.
130.0 - 8.0 - 75.5 - 186.7 - 67.0 - 1.3 - 12.2 - 0.06 - 31.
120.0 - 10.5 - 113.3 - 180.8 - 70.9 - 1.3 - 14.7 - 0.06 - 38.
110.0 - 12.5 - 113.3 - 170.5 - 70.9 - 1.2 - 15.9 - 0.06 - 42.
100.0 - 12.5 - 113.3 - 160.7 - 70.9 - 1.1 - 14.3 - 0.05 - 39.
90.0 - 13.5 - 113.3 - 150.7 - 70.9 - 1.0 - 13.6 - 0.04 - 39.
80.0 - 15.5 - 151.0 - 143.2 - 73.3 - 0.9 - 13.5 - 0.04 - 41.
70.0 - 19.0 - 151.0 - 133.1 - 73.3 - 0.8 - 13.9 - 0.04 - 45.
60.0 - 15.5 - 151.0 - 123.3 - 73.3 - 1.4 - 25.5 - 0.14 - 33.
50.0 - 19.0 - 188.8 - 115.0 - 75.1 - 1.3 - 26.8 - 0.11 - 36.
40.0 - 22.0 - 188.8 - 105.0 - 75.1 - 1.1 - 25.8 - 0.08 - 37.
30.0 - 24.0 - 226.5 - 96.2 - 76.3 - 1.5 - 43.6 - 0.30 - 35.
20.0 - 24.5 - 264.3 - 87.2 - 77.3 - 1.6 - 47.4 - 0.38 - 30.
10.0 - 31.0 - 264.3 - 77.2 - 77.3 - 1.3 - 45.9 - 0.21 - 30.

deco plus surfacing time = 437.5 min
cum CNS% = 1.98 cum OTU = 441.4 min
cum gas consumption = 2375. ft^3

dive time = 456.0 min

 

[padiscubapro]

accorting to mark he used his own planning not RGBM.. here is a message from him, say9ing other than some deep stops is was a traditional buhlman type profile.


If anyone is interested in a deep dive story...heres a condensed version of
a reasonably deep one

Plan was 320m at an open ocean divesite in Phuket Thailand...charted depth
under the dive boat 414m-484m (keeps the anchor from dragging nicely

back gas was 5/76 gave a high END but this kept the HPNS undercontrol
nicely and made the next gas choice easier.

the drop down was smoothish, the dry suit gas was bottom mix (forget what
you may have read...argon...helium bad insulator etc blah blah blah).
This flows nicley and kept me nice an warm when the the water was 3-4'c.

The descent was stopped at 313m for a couple of reasons,

ascending at 15m per minute dropping to 10m per minute from 250m. The
subsequent gases all contained 30% N2 or less and the N2 values were
always dropping. many reasons for this.

the stops went well largely due to the support team and having lots of
spare gas.

Breathing high helium to the surface culminating in a 3 hour session from
9m to 3m on heliox was a very difficult experience. Helium cooled me from
the inside out when on open circuit, body has huge problem heating the
inspired gas , long hoses to the surface did a reasonable job raising gas
temps. vast quantities of warmed water consumed.

The Po2's were low so as to eliminate air breaks with their often
disastrous affects. Air breaks may work in a chamber but not too well
during a trimix dive (depending on size of dive)

Obviously back gas switches were out of the question , I had 8 other
trimixes to choose from, but all contained some N2.

Some unpleasantness occured when a long hose was swapped at the surface. My
tongue was sucked into the partial vacuum, but luckily the hose wall
yielded and i pulled my tongue free (now 6'' longer)

The deco plan was created on propietary software, but apart from the deep
stops placing and times looks similar to a traditional buhlman model with
the helium values changed. Deco ran 6 hours 40 mins...I surfaced exhausted
and suffered pulmonary toxicity for 3-4 days.

I have a deco plan analyser which can check plans created from even the
most comical dive software. When the interface is more user friendly (to
me!) I will send some details...you need to see it ! Any dive plan will
have its weakneses revealed both DCI/ICD related and oxtox and body work
load

Most planners generate deeper stops from the top down...this is just crap.
The free gas "miracle" dive planners need leaving well alone.


I am not claiming this as anything other than the deepest solo dive on
scuba, which happened to be (more importantly) the first without
significant DCI.

I appreciate this is a very brief message, if anyone is interested I can
send a detailed account.

cheers...Mark E

www.Inspired-Training.com

 

[Saturation]

Its should be fair to either cross post or link the very detailed discussions going on at thedecostop.com in regards to Mark Elyatt's schedule.

Here's the current link, if you think its applicable.

http://thedecostop.com/forums/showthread.php?p=63976#post63976

While scubaboard.com has a much larger audience of divers, a unique group of deep and very deep divers are on TDS to make very detailed commentary on the issues encountered in such dives.

To minimize clutter on this post I will post another interesting item.

 

[Saturation]

Interesting issue for your readers.

#1 Ellyatt's posted schedule was to 320m not what he actually did to 313m. A comparison should be made against this planned schedule not what he actually did unless Dr. Wienke is privy to this schedule.

#2 runtime often refers to total dive time, as is here in what was posted in TDS. So, this time refers to Dr. W 'dive time' which is 456.5 min not 437min versus Elyatt's of 417 minutes, a difference of ~ 40min.

#3 Dr W descent rate of 60fpm is not close to Ellyatt's planned descent rate on his schedule. Neither is the ascent rate of 30fpm used by Dr.W.

#4 assuming the RGBM schedule is what Ellyatt used, a VPM-original schedule is exceedingly close to this RGBM schedule. I left the bubble constants unchanged in VPM, and changed the ascent to 30fpm and descent rate to 60fpm. They are not identical, but this VPM schedule has a runtime of 458min, 2 minutes longer than Dr. W.

FWIW, Ellyatt's schedule has a maximum descent rate of 454fpm {138m} in the final section, which is hard to believe.. see for yourselves between 140meters and 320 meters.


V-Planner 3.32 by R. Hemingway, VPM code by Erik C. Baker.

Decompression model: VPM

DIVE PLAN
Surface interval = 2 day 0 hr 0 min.
Elevation = 0ft
Conservatism = Nominal

Dec to 1049ft (17:29) on Trimix 5.0/76.0, 60ft/min descent.
Level 1049ft 1:31 (19:00) on Trimix 5.0/76.0, 1.64 ppO2, 227ft ead, 227ft end
Asc to 840ft (25:58) on Trimix 5.0/76.0, -30ft/min ascent.
Stop at 840ft 0:02 (26:00) on Trimix 5.0/76.0, 1.32 ppO2, 177ft ead, 176ft end
Stop at 830ft 0:30 (26:30) on Trimix 5.0/76.0, 1.31 ppO2, 175ft ead, 174ft end
Stop at 820ft 0:30 (27:00) on Trimix 5.0/76.0, 1.29 ppO2, 172ft ead, 172ft end
Stop at 810ft 0:30 (27:30) on Trimix 5.0/76.0, 1.27 ppO2, 170ft ead, 169ft end
Stop at 800ft 0:30 (28:00) on Trimix 5.0/76.0, 1.26 ppO2, 167ft ead, 167ft end
Stop at 790ft 0:30 (28:30) on Trimix 5.0/76.0, 1.24 ppO2, 165ft ead, 164ft end
Stop at 780ft 0:30 (29:00) on Trimix 5.0/76.0, 1.23 ppO2, 162ft ead, 162ft end
Stop at 770ft 0:30 (29:30) on Trimix 5.0/76.0, 1.21 ppO2, 160ft ead, 160ft end
Stop at 760ft 0:30 (30:00) on Trimix 5.0/76.0, 1.20 ppO2, 158ft ead, 157ft end
Stop at 750ft 0:30 (30:30) on Trimix 5.0/76.0, 1.18 ppO2, 155ft ead, 155ft end
Stop at 740ft 0:30 (31:00) on Trimix 5.0/76.0, 1.17 ppO2, 153ft ead, 152ft end
Stop at 730ft 1:00 (32:00) on Trimix 5.0/76.0, 1.15 ppO2, 150ft ead, 150ft end
Stop at 720ft 0:30 (32:30) on Trimix 5.0/76.0, 1.14 ppO2, 148ft ead, 148ft end
Stop at 710ft 0:30 (33:00) on Trimix 5.0/76.0, 1.12 ppO2, 146ft ead, 145ft end
Stop at 700ft 1:00 (34:00) on Trimix 5.0/76.0, 1.11 ppO2, 143ft ead, 143ft end
Stop at 690ft 0:30 (34:30) on Trimix 5.0/76.0, 1.09 ppO2, 141ft ead, 140ft end
Stop at 680ft 1:00 (35:30) on Trimix 5.0/76.0, 1.08 ppO2, 138ft ead, 138ft end
Stop at 670ft 0:30 (36:00) on Trimix 5.0/76.0, 1.06 ppO2, 136ft ead, 136ft end
Stop at 660ft 1:00 (37:00) on Trimix 5.0/76.0, 1.05 ppO2, 134ft ead, 133ft end
Stop at 650ft 1:00 (38:00) on Trimix 5.0/76.0, 1.03 ppO2, 131ft ead, 131ft end
Stop at 640ft 0:30 (38:30) on Trimix 5.0/76.0, 1.02 ppO2, 129ft ead, 128ft end
Stop at 630ft 1:00 (39:30) on Trimix 5.0/76.0, 1.00 ppO2, 126ft ead, 126ft end
Stop at 620ft 1:00 (40:30) on Trimix 5.0/76.0, 0.99 ppO2, 124ft ead, 124ft end
Stop at 610ft 1:30 (42:00) on Trimix 5.0/76.0, 0.97 ppO2, 122ft ead, 121ft end
Stop at 600ft 1:00 (43:00) on Trimix 5.0/76.0, 0.96 ppO2, 119ft ead, 119ft end
Stop at 590ft 1:00 (44:00) on Trimix 5.0/76.0, 0.94 ppO2, 117ft ead, 116ft end
Stop at 580ft 1:00 (45:00) on Trimix 5.0/76.0, 0.93 ppO2, 114ft ead, 114ft end
Stop at 570ft 1:30 (46:30) on Trimix 5.0/76.0, 0.91 ppO2, 112ft ead, 112ft end
Stop at 560ft 1:00 (47:30) on Trimix 5.0/76.0, 0.90 ppO2, 110ft ead, 109ft end
Stop at 550ft 1:30 (49:00) on Trimix 5.0/76.0, 0.88 ppO2, 107ft ead, 107ft end
Stop at 540ft 1:30 (50:30) on Trimix 5.0/76.0, 0.87 ppO2, 105ft ead, 104ft end
Stop at 530ft 1:30 (52:00) on Trimix 5.0/76.0, 0.85 ppO2, 102ft ead, 102ft end
Stop at 520ft 1:30 (53:30) on Trimix 5.0/76.0, 0.84 ppO2, 100ft ead, 100ft end
Stop at 510ft 1:30 (55:00) on Trimix 5.0/76.0, 0.82 ppO2, 98ft ead, 97ft end
Stop at 500ft 2:00 (57:00) on Trimix 5.0/76.0, 0.81 ppO2, 95ft ead, 95ft end
Stop at 490ft 1:30 (58:30) on Trimix 5.0/76.0, 0.79 ppO2, 93ft ead, 92ft end
Stop at 480ft 2:00 (60:30) on Trimix 5.0/76.0, 0.78 ppO2, 90ft ead, 90ft end
Stop at 470ft 2:30 (63:00) on Trimix 5.0/76.0, 0.76 ppO2, 88ft ead, 88ft end
Stop at 460ft 2:00 (65:00) on Trimix 5.0/76.0, 0.75 ppO2, 86ft ead, 85ft end
Stop at 450ft 2:00 (67:00) on Trimix 5.0/76.0, 0.73 ppO2, 83ft ead, 83ft end
Stop at 440ft 2:30 (69:30) on Trimix 5.0/76.0, 0.72 ppO2, 81ft ead, 80ft end
Stop at 430ft 2:30 (72:00) on Trimix 5.0/76.0, 0.70 ppO2, 78ft ead, 78ft end
Stop at 420ft 1:30 (73:30) on Trimix 10.0/60.0, 1.37 ppO2, 139ft ead, 148ft end
Stop at 410ft 2:00 (75:30) on Trimix 10.0/60.0, 1.34 ppO2, 135ft ead, 144ft end
Stop at 400ft 1:30 (77:00) on Trimix 10.0/60.0, 1.31 ppO2, 131ft ead, 140ft end
Stop at 390ft 2:00 (79:00) on Trimix 10.0/60.0, 1.28 ppO2, 128ft ead, 136ft end
Stop at 380ft 2:00 (81:00) on Trimix 10.0/60.0, 1.25 ppO2, 124ft ead, 132ft end
Stop at 370ft 2:00 (83:00) on Trimix 10.0/60.0, 1.22 ppO2, 120ft ead, 128ft end
Stop at 360ft 2:00 (85:00) on Trimix 10.0/60.0, 1.19 ppO2, 116ft ead, 124ft end
Stop at 350ft 2:30 (87:30) on Trimix 10.0/60.0, 1.16 ppO2, 112ft ead, 120ft end
Stop at 340ft 3:00 (90:30) on Trimix 10.0/60.0, 1.13 ppO2, 109ft ead, 116ft end
Stop at 330ft 3:00 (93:30) on Trimix 10.0/60.0, 1.10 ppO2, 105ft ead, 112ft end
Stop at 320ft 3:00 (96:30) on Trimix 10.0/60.0, 1.07 ppO2, 101ft ead, 108ft end
Stop at 310ft 3:00 (99:30) on Trimix 10.0/60.0, 1.04 ppO2, 97ft ead, 104ft end
Stop at 300ft 3:00 (102:30) on Trimix 10.0/60.0, 1.01 ppO2, 93ft ead, 100ft end
Stop at 290ft 3:00 (105:30) on Trimix 14.0/56.0, 1.37 ppO2, 90ft ead, 109ft end
Stop at 280ft 4:00 (109:30) on Trimix 14.0/56.0, 1.33 ppO2, 86ft ead, 105ft end
Stop at 270ft 4:00 (113:30) on Trimix 14.0/56.0, 1.28 ppO2, 82ft ead, 100ft end
Stop at 260ft 4:00 (117:30) on Trimix 14.0/56.0, 1.24 ppO2, 78ft ead, 96ft end
Stop at 250ft 4:30 (122:00) on Trimix 14.0/56.0, 1.20 ppO2, 74ft ead, 91ft end
Stop at 240ft 4:30 (126:30) on Trimix 14.0/56.0, 1.16 ppO2, 71ft ead, 87ft end
Stop at 230ft 4:30 (131:00) on Trimix 14.0/56.0, 1.11 ppO2, 67ft ead, 83ft end
Stop at 220ft 5:30 (136:30) on Trimix 14.0/56.0, 1.07 ppO2, 63ft ead, 78ft end
Stop at 210ft 6:30 (143:00) on Trimix 14.0/56.0, 1.03 ppO2, 59ft ead, 74ft end
Stop at 200ft 6:30 (149:30) on Trimix 14.0/56.0, 0.99 ppO2, 55ft ead, 69ft end
Stop at 190ft 7:00 (156:30) on Trimix 14.0/56.0, 0.94 ppO2, 52ft ead, 65ft end
Stop at 180ft 7:30 (164:00) on Trimix 14.0/56.0, 0.90 ppO2, 48ft ead, 61ft end
Stop at 170ft 8:00 (172:00) on Trimix 14.0/56.0, 0.86 ppO2, 44ft ead, 56ft end
Stop at 160ft 10:00 (182:00) on Trimix 14.0/56.0, 0.82 ppO2, 40ft ead, 52ft end
Stop at 150ft 10:00 (192:00) on Trimix 14.0/56.0, 0.78 ppO2, 36ft ead, 47ft end
Stop at 140ft 11:00 (203:00) on Trimix 14.0/56.0, 0.73 ppO2, 33ft ead, 43ft end
Stop at 130ft 9:30 (212:30) on Trimix 27.0/43.0, 1.33 ppO2, 29ft ead, 60ft end
Stop at 120ft 11:00 (223:30) on Trimix 27.0/43.0, 1.25 ppO2, 25ft ead, 54ft end
Stop at 110ft 12:00 (235:30) on Trimix 27.0/43.0, 1.17 ppO2, 21ft ead, 48ft end
Stop at 100ft 13:30 (249:00) on Trimix 27.0/43.0, 1.09 ppO2, 17ft ead, 43ft end
Stop at 90ft 16:00 (265:00) on Trimix 27.0/43.0, 1.00 ppO2, 14ft ead, 37ft end
Stop at 80ft 16:30 (281:30) on Trimix 27.0/43.0, 0.92 ppO2, 10ft ead, 31ft end
Stop at 70ft 16:00 (297:30) on Trimix 50.0/23.0, 1.56 ppO2, 2ft ead, 46ft end
Stop at 60ft 18:30 (316:00) on Trimix 50.0/23.0, 1.41 ppO2, 0ft ead, 39ft end
Stop at 50ft 21:00 (337:00) on Trimix 50.0/23.0, 1.26 ppO2, 0ft ead, 31ft end
Stop at 40ft 26:00 (363:00) on Trimix 50.0/23.0, 1.10 ppO2, 0ft ead, 23ft end
Stop at 30ft 26:30 (389:30) on HeliOx 80.0, 1.53 ppO2, 0ft ead, 17ft end
Stop at 20ft 31:00 (420:30) on Oxygen, 1.60 ppO2, 0ft ead
Stop at 10ft 37:30 (458:00) on Oxygen, 1.30 ppO2, 0ft ead
Asc to sfc. (458:20) on Oxygen, -30ft/min ascent.

Off gassing starts at 874.7ft

OTU's this dive: 582
CNS Total: 281.2%

893.8 cu ft Trimix 5.0/76.0
212.5 cu ft Trimix 10.0/60.0
421.0 cu ft Trimix 14.0/56.0
191.8 cu ft Trimix 27.0/43.0
127.2 cu ft Trimix 50.0/23.0
30.3 cu ft HeliOx 80.0
59.1 cu ft Oxygen
1935.7 cu ft TOTAL


DIVE PLAN COMPLETE

 

[Saturation]

Ellyatt's posted schedule, its not been verified but assumed to be his planned schedule, is in a jpg file in my previous post.

The mechanics and details of his schedule are difficult to replicate without much more time than I have on hand, but in a brief modeling of the schedule using VPM, this schedule is very close in terms of stops and total run time.

Critical elements not duplicated here are the descent near the start of the dive, were he plans for a descent of over 140mpm, and a variable ascent rate from 320m. Because of that, there is more ongassing with my rough model than is necessary. I have used what is done by The AUE folks in S. Florida and others, i.e., 100fpm, and ascents at 30fpm.

Ellyatt Run time 417 min as planned, VPM run time 412min, 5 minutes faster than Ellyatt's schedule.

What can be said with some certainty about Ellyatt's schedule is that is very bubble model in shape.


V-Planner 3.32 by R. Hemingway, VPM code by Erik C. Baker.

Decompression model: VPM

DIVE PLAN
Surface interval = 2 day 0 hr 0 min.
Elevation = 0m
Conservatism = + 2

Dec to 50m (1:31) on Trimix 5.0/76.0, 33m/min descent.
Level 50m 0:59 (2:30) on Trimix 5.0/76.0, 0.30 ppO2, 4m ead, 4m end
Dec to 140m (5:14) on Trimix 5.0/76.0, 33m/min descent.
Level 140m 1:16 (6:30) on Trimix 5.0/76.0, 0.74 ppO2, 26m ead, 26m end
Dec to 320m (11:57) on Trimix 5.0/76.0, 33m/min descent.
Level 320m 2:03 (14:00) on Trimix 5.0/76.0, 1.64 ppO2, 69m ead, 69m end
Asc to 243m (22:33) on Trimix 5.0/76.0, -9m/min ascent.
Stop at 243m 0:27 (23:00) on Trimix 5.0/76.0, 1.26 ppO2, 51m ead, 51m end
Stop at 240m 0:30 (23:30) on Trimix 5.0/76.0, 1.24 ppO2, 50m ead, 50m end
Stop at 237m 0:30 (24:00) on Trimix 5.0/76.0, 1.23 ppO2, 49m ead, 49m end
Stop at 234m 0:30 (24:30) on Trimix 5.0/76.0, 1.21 ppO2, 49m ead, 49m end
Stop at 231m 0:30 (25:00) on Trimix 5.0/76.0, 1.20 ppO2, 48m ead, 48m end
Stop at 228m 0:30 (25:30) on Trimix 5.0/76.0, 1.18 ppO2, 47m ead, 47m end
Stop at 225m 0:30 (26:00) on Trimix 5.0/76.0, 1.17 ppO2, 46m ead, 46m end
Stop at 222m 0:30 (26:30) on Trimix 5.0/76.0, 1.15 ppO2, 46m ead, 46m end
Stop at 219m 0:30 (27:00) on Trimix 5.0/76.0, 1.14 ppO2, 45m ead, 45m end
Stop at 216m 0:30 (27:30) on Trimix 5.0/76.0, 1.12 ppO2, 44m ead, 44m end
Stop at 213m 1:00 (28:30) on Trimix 5.0/76.0, 1.11 ppO2, 44m ead, 43m end
Stop at 210m 0:30 (29:00) on Trimix 5.0/76.0, 1.09 ppO2, 43m ead, 43m end
Stop at 207m 1:00 (30:00) on Trimix 5.0/76.0, 1.08 ppO2, 42m ead, 42m end
Stop at 204m 0:30 (30:30) on Trimix 5.0/76.0, 1.06 ppO2, 41m ead, 41m end
Stop at 201m 1:00 (31:30) on Trimix 5.0/76.0, 1.05 ppO2, 41m ead, 41m end
Stop at 198m 0:30 (32:00) on Trimix 5.0/76.0, 1.03 ppO2, 40m ead, 40m end
Stop at 195m 1:00 (33:00) on Trimix 5.0/76.0, 1.02 ppO2, 39m ead, 39m end
Stop at 192m 0:30 (33:30) on Trimix 5.0/76.0, 1.00 ppO2, 39m ead, 38m end
Stop at 189m 1:00 (34:30) on Trimix 5.0/76.0, 0.99 ppO2, 38m ead, 38m end
Stop at 186m 1:00 (35:30) on Trimix 5.0/76.0, 0.97 ppO2, 37m ead, 37m end
Stop at 183m 0:30 (36:00) on Trimix 5.0/76.0, 0.96 ppO2, 36m ead, 36m end
Stop at 180m 1:00 (37:00) on Trimix 5.0/76.0, 0.94 ppO2, 36m ead, 36m end
Stop at 177m 1:00 (38:00) on Trimix 5.0/76.0, 0.93 ppO2, 35m ead, 35m end
Stop at 174m 1:00 (39:00) on Trimix 5.0/76.0, 0.91 ppO2, 34m ead, 34m end
Stop at 171m 1:00 (40:00) on Trimix 5.0/76.0, 0.90 ppO2, 33m ead, 33m end
Stop at 168m 1:30 (41:30) on Trimix 5.0/76.0, 0.88 ppO2, 33m ead, 33m end
Stop at 165m 1:00 (42:30) on Trimix 5.0/76.0, 0.87 ppO2, 32m ead, 32m end
Stop at 162m 1:30 (44:00) on Trimix 5.0/76.0, 0.85 ppO2, 31m ead, 31m end
Stop at 159m 1:30 (45:30) on Trimix 5.0/76.0, 0.84 ppO2, 31m ead, 31m end
Stop at 156m 1:30 (47:00) on Trimix 5.0/76.0, 0.82 ppO2, 30m ead, 30m end
Stop at 153m 1:30 (48:30) on Trimix 5.0/76.0, 0.81 ppO2, 29m ead, 29m end
Stop at 150m 1:30 (50:00) on Trimix 5.0/76.0, 0.79 ppO2, 28m ead, 28m end
Stop at 147m 1:30 (51:30) on Trimix 5.0/76.0, 0.78 ppO2, 28m ead, 28m end
Stop at 144m 1:30 (53:00) on Trimix 5.0/76.0, 0.76 ppO2, 27m ead, 27m end
Stop at 141m 2:00 (55:00) on Trimix 5.0/76.0, 0.75 ppO2, 26m ead, 26m end
Stop at 138m 2:00 (57:00) on Trimix 5.0/76.0, 0.73 ppO2, 26m ead, 25m end
Stop at 135m 2:30 (59:30) on Trimix 5.0/76.0, 0.72 ppO2, 25m ead, 25m end
Stop at 132m 2:00 (61:30) on Trimix 5.0/76.0, 0.70 ppO2, 24m ead, 24m end
Stop at 129m 1:30 (63:00) on Trimix 10.0/60.0, 1.38 ppO2, 43m ead, 46m end
Stop at 126m 1:30 (64:30) on Trimix 10.0/60.0, 1.35 ppO2, 42m ead, 44m end
Stop at 123m 1:00 (65:30) on Trimix 10.0/60.0, 1.32 ppO2, 40m ead, 43m end
Stop at 120m 2:00 (67:30) on Trimix 10.0/60.0, 1.29 ppO2, 39m ead, 42m end
Stop at 117m 1:30 (69:00) on Trimix 10.0/60.0, 1.26 ppO2, 38m ead, 41m end
Stop at 114m 2:00 (71:00) on Trimix 10.0/60.0, 1.23 ppO2, 37m ead, 40m end
Stop at 111m 2:00 (73:00) on Trimix 10.0/60.0, 1.20 ppO2, 36m ead, 38m end
Stop at 108m 2:00 (75:00) on Trimix 10.0/60.0, 1.17 ppO2, 35m ead, 37m end
Stop at 105m 2:00 (77:00) on Trimix 10.0/60.0, 1.14 ppO2, 34m ead, 36m end
Stop at 102m 2:00 (79:00) on Trimix 10.0/60.0, 1.11 ppO2, 32m ead, 35m end
Stop at 99m 3:00 (82:00) on Trimix 10.0/60.0, 1.08 ppO2, 31m ead, 34m end
Stop at 96m 3:00 (85:00) on Trimix 10.0/60.0, 1.05 ppO2, 30m ead, 32m end
Stop at 93m 3:00 (88:00) on Trimix 10.0/60.0, 1.02 ppO2, 29m ead, 31m end
Stop at 90m 3:00 (91:00) on Trimix 14.0/56.0, 1.39 ppO2, 28m ead, 34m end
Stop at 87m 2:30 (93:30) on Trimix 14.0/56.0, 1.35 ppO2, 27m ead, 33m end
Stop at 84m 3:00 (96:30) on Trimix 14.0/56.0, 1.31 ppO2, 26m ead, 31m end
Stop at 81m 3:00 (99:30) on Trimix 14.0/56.0, 1.27 ppO2, 25m ead, 30m end
Stop at 78m 4:00 (103:30) on Trimix 14.0/56.0, 1.22 ppO2, 23m ead, 29m end
Stop at 75m 4:30 (108:00) on Trimix 14.0/56.0, 1.18 ppO2, 22m ead, 27m end
Stop at 72m 4:30 (112:30) on Trimix 14.0/56.0, 1.14 ppO2, 21m ead, 26m end
Stop at 69m 4:30 (117:00) on Trimix 14.0/56.0, 1.10 ppO2, 20m ead, 25m end
Stop at 66m 4:30 (121:30) on Trimix 14.0/56.0, 1.06 ppO2, 19m ead, 23m end
Stop at 63m 5:00 (126:30) on Trimix 14.0/56.0, 1.02 ppO2, 18m ead, 22m end
Stop at 60m 6:00 (132:30) on Trimix 14.0/56.0, 0.97 ppO2, 17m ead, 21m end
Stop at 57m 7:00 (139:30) on Trimix 14.0/56.0, 0.93 ppO2, 15m ead, 19m end
Stop at 54m 7:00 (146:30) on Trimix 14.0/56.0, 0.89 ppO2, 14m ead, 18m end
Stop at 51m 7:30 (154:00) on Trimix 14.0/56.0, 0.85 ppO2, 13m ead, 17m end
Stop at 48m 8:00 (162:00) on Trimix 14.0/56.0, 0.81 ppO2, 12m ead, 15m end
Stop at 45m 9:30 (171:30) on Trimix 14.0/56.0, 0.77 ppO2, 11m ead, 14m end
Stop at 42m 8:30 (180:00) on Trimix 27.0/43.0, 1.40 ppO2, 10m ead, 20m end
Stop at 39m 8:30 (188:30) on Trimix 27.0/43.0, 1.31 ppO2, 9m ead, 18m end
Stop at 36m 9:00 (197:30) on Trimix 27.0/43.0, 1.23 ppO2, 7m ead, 16m end
Stop at 33m 12:00 (209:30) on Trimix 27.0/43.0, 1.15 ppO2, 6m ead, 14m end
Stop at 30m 12:00 (221:30) on Trimix 27.0/43.0, 1.07 ppO2, 5m ead, 13m end
Stop at 27m 13:30 (235:00) on Trimix 27.0/43.0, 0.99 ppO2, 4m ead, 11m end
Stop at 24m 17:00 (252:00) on Trimix 27.0/43.0, 0.91 ppO2, 3m ead, 9m end
Stop at 21m 13:30 (265:30) on Trimix 50.0/23.0, 1.54 ppO2, 1m ead, 14m end
Stop at 18m 17:00 (282:30) on Trimix 50.0/23.0, 1.39 ppO2, 0m ead, 12m end
Stop at 15m 19:30 (302:00) on Trimix 50.0/23.0, 1.24 ppO2, 0m ead, 9m end
Stop at 12m 23:00 (325:00) on Trimix 50.0/23.0, 1.10 ppO2, 0m ead, 7m end
Stop at 9m 25:30 (350:30) on HeliOx 80.0, 1.51 ppO2, 0m ead, 5m end
Stop at 6m 27:00 (377:30) on Oxygen, 1.60 ppO2, 0m ead
Stop at 3m 34:30 (412:00) on Oxygen, 1.30 ppO2, 0m ead
Asc to sfc. (412:20) on Oxygen, -9m/min ascent.

Off gassing starts at 260.3m

OTU's this dive: 527
CNS Total: 241.2%

779.6 cu ft Trimix 5.0/76.0
186.1 cu ft Trimix 10.0/60.0
359.8 cu ft Trimix 14.0/56.0
199.4 cu ft Trimix 27.0/43.0
112.6 cu ft Trimix 50.0/23.0
28.9 cu ft HeliOx 80.0
52.6 cu ft Oxygen
1719 cu ft TOTAL