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MiG Plan - Decompression Table Generator Software
MiG Plan is a full-featured decompression table generation program for IBM-=
PC or Macintosh computers. Using this program qualified divers can "cut" c=
ustom decompression tables. Tables as simple as repetitive "No-Deco"1 air d=
ives to complex multi-level, m
ulti-gas dives are calculated by MiG Plan.
MiG Plan's Features include:
Full Air, Nitrox, Tri-Mix and Heli-Ox dive table generation
User-Specified Decompression Algorithm
User-Specified Conservative/Aggressive Bias Factor
Multi-Level dive table generation
Oxygen decompression
CNS Oxygen dose tracking
Gas mix optimization planner
Automatic or manual decompression schedule control
Gas requirement planning
Single and repetitive dive table generation
Surface oxygen pre-dive "wash-out"
Run-time dive schedule listing
Air, Nitrox, Tri-Mix, and Heli-Ox dive table generation
MiG Plan allows the computer literate diver to "cut" his own custom decompr=
ession table to meet his own individual needs. Divers who are not satisfied=
with using tables made for the masses (or the US Navy) will enjoy the flex=
ibility and control afforded b
y MiG Plan.=20
Nitrox divers can generate tables that exactly track their nitrogen status =
rather than the approximations made by using the EAD system to modify exist=
ing air tables. =20
Mixed gas divers can now use MiG Plan to generate tables for the gas mixes =
they have available to them, rather than having to attempt to match their g=
as mix to an existing table. Imagine the increased confidence that a diver =
would enjoy by analyzing the m
ix in his cylinders, then "cutting" a table based on what is in his cylinde=
rs!=20
Gas divers can (and are encouraged to) generate "back-up" tables to prepare=
for the loss or malfunction of their decompression gas supplies. This is a=
n area that many divers may have unknowingly neglected in their dive planni=
ng. With MiG Plan, divers can=20
play "What-If" (example: my oxygen bottle is lost during the dive and I hav=
e to finish my deco on Nitrox...) with their personal computers rather than=
play Russian Roulette with their bodies.
User-Specified Decompression Algorithm
User-Specified Conservative/Aggressive Bias Factor
There are over two million divers on this planet, not all of them have the =
same predisposition to Decompression illness. One set of tables cannot sati=
sfy all the various diver/conditions/health/fitness combinations. MiG Plan =
allows the savvy diver to choo
se the decompression algorithm (model) that he feels best suits his type of=
diving. MiG Plan implements the =93straight=94 algorithm with no modificat=
ion to the published decompression models. MiG Plan allows the user to spec=
ify how conservatively or aggressi
vely he wants to follow the "straight" algorithm by way or specifying a =93=
bias=94 factor.
Divers have been doing this for years, but in the arbitrary and haphazard m=
anner of "cut 5 minutes from the No-Deco-Limits if you are a smoker, 5 more=
if you are overweight..." or "take your ten-foot stop at fifteen feet, plu=
s your age, divided by your as
trological sign". This method does work after a fashion, but is more rooted=
in voodoo than sound decompression theory. Sometimes these "safety factors=
" can do more harm than good. MiG Plan allows the diver to logically apply =
the bias factor to the decompr
ession tables before they are generated, ensuring that the calculations are=
correct and consistent.
Using the bias factor, divers can make MiG Plan produce similar decompressi=
on schedules to published tables.
Multi-Level dive table generation
While not all divers choose to make multi-level dives using tables, those w=
ho do are restricted to planning the dives using only the deepest to shallo=
west protocol. Unlike a dive computer, published tables cannot be used to d=
evelop reliable dive plans tha
t follow a shallow-deep-shallow profile.
Technical and Cave divers can use MiG Plan to generate tables for multi-lev=
el dives that do not follow the typical deepest to shallowest dive profile =
due to the mission requirements. This often results in a shorter decompress=
ion, reducing the chance of hy
pothermia, which is suspected in many "undeserved" cases of decompression i=
llness.
MiG Plan can be used as a desktop (or laptop!) simulator of dive computer.
Oxygen decompression
Technical divers have known for a long time that using oxygen reduces their=
decompression obligation, but exactly how much has been difficult or impos=
sible to determine using conventional tables and dive computers. MiG Plan c=
omputes the decompression sche
dule consistently, taking full advantage of the accelerated out-gassing pos=
sible with oxygen.
CNS Oxygen dose tracking
MiG Plan tracks the diver's CNS dose "clock" that is always running when br=
eathing hyperoxic mixtures. The calculation is by the Hamilton method (i.e.=
% of daily allowable dose).
The allowable partial pressure of oxygen during decompression is set by the=
user.
Automatic or manual decompression schedule control
Normally divers will input the gases they will be using for decompression a=
nd let MiG Plan "crunch the numbers" . MiG Plan sorts out the available gas=
es and develops a decompression schedule based upon the maximum operating d=
epth (MOD) and efficiency of d
ecompression of each gas.
In unusual or extreme cases the user can take manual control over the decom=
pression schedule generation. (example: "We cannot make any stops at 20 fee=
t" or, "I prefer to make my shallowest stop in the shark cage at a depth of=
15 feet.")
Gas requirements planning
MiG Plan asks the user for his Surface Air Consumption rate. Based on this=
MiG Plan, calculates the minimum2 amount of gas needed for the decompressi=
on schedule.
Single and repetitive dive planning
MiG Plan allows calculation of single and repetitive air, nitrox and mixed =
gas dives.
Surface oxygen pre-dive "wash-out"
MiG Plan allows a diver to calculate surface oxygen pre/post-dive "wash-out=
" credit.=20
Run-time dive schedule listing
MiG Plan lists all decompression schedules in the easy to follow "Run-Time"=
format.
MiG Plan is available in three different versions; air only to certified di=
vers, air+nitrox to certified nitrox divers, and full mixed gas version to =
certified mixed gas divers.
Technical specifications:
Minimum computer hardware requirements: IBM PC-XT or compatible with one fl=
oppy drive3, or a Macintosh 1284.
Maximum allowable PpO2 during decompression can be adjusted by user at run=
-time
Decompression models: 12-Compartment-Parallel, 16-Compartment-Parallel
Maximum number of decompression gases for any one dive: 85 (Autoplan Mode)
Maximum number of decompression gases for any one dive: Infinite (Manual Mo=
de)
Number of choices for bottom gas: Infinite
For more information regarding technical specifications and publication sch=
edule contact:
MiG Technologies
A Division of Shadow Information Service, Inc
2000 NW 88 Ct.
Miami, Fl 33172
or on the Internet: svendsen@sh*.ne* or dan@sh*.ne*
1Of course we know that there is truly no such thing as a no-decompression =
dive. All dives are decompression dives, some just don't require decompress=
ion stops.
2This is the minimum, be sure to follow the appropriate gas cut-off rule fo=
r any dive you may be on.
3DOS 2.11 or better
4System 4.2 or better (MiG Plan is System 7.x tolerant)
56 for Macintosh version
MiG Technologies - A Division of Shadow Information Service, Inc=09=09=09{P=
AGE|4}
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