SCUBA3 Version 1.3 for Psion palmtops
September 1999
Jean-Yves Pontailler

FEATURES
Scuba3 is a simple freeware for Psion 3 a/c/mx
computers, which aim is to help scuba divers.
It calculates the decompression time and allows
the managing of a logbook. This logbook is fully
compatible with the built-in "DATA" application.
Scuba3 is used at the user own risk.

INSTALLATION
Copy the application file (Scuba3gb.opa) in the
APP directory of any drive. Copy the help file
(Scubag.rsc) in the OPD directory of any drive.
Then install the application file using the
"Application" menu or using the shortcut Psion-I.
If you have been using a previous version of
Scuba3, just delete the two ancient files.
In this case, your logbook will still be usable.

DECOMPRESSION TABLES
Scuba3 makes use of both British BS-AC 88 and
French MN 90 tables. The maximum depth is limited
to 45 metres and the diving time is limited to 99 min.
Neither repetitive diving nor diving in altitude
are supported.

DECOMPRESSION STOPS
The programme calculates stops at 6 and 9 metres
(British tables) or at 3 and 6 metres (French tables).
The no-stop curve is displayed together with the
results of the calculation. For another calculation
using the same table, press Tab.

LOGBOOK
You can manage a single logbook including an
unlimited number of dives. You can enter the
characteristics for each dive, together with a
comment of 5 lines of 48 characters at maximum.
To browse records, use right or left arrows.
Up/down arrows display the first/last record.

MODIFYING THE LOGBOOK
When browsing, you can delete a record using
the DEL key. To modify a record, you must exit
Scuba3 and open the Scuba.dat file using the
DATA application : from the system screen, place
the cursor underneath the DATA icon and press
Tab. Then, select Scuba.dat in the \OPD\ directory
of the internal disk and press enter.
The amended records will be placed at the end
of the file.

FILES
Scuba3gb.opa : application (English)(in any \APP\)
Scubag.rsc : help file (in any \OPD\)
Scuba.dat : logbook (created in M:\DAT\ by Scuba3)
            (M is the internal disk)
The three other files present in the ZIP archive,
Scuba3.opa, Scuba.rsc and Lis-moi.txt are the
French version of Scuba3.

                    **************

This is the second release in English. Feel free to
contact me for amending my English, for any suggestion
and for bud tracking :

	jean-yves.pontailler@eco.u-psud.fr

There is also a French version in this ZIP archive.
Future versions will be released at the excellent
Nautical Psion Web site :

	//p.pellot.free.fr/

Presently there are no plans for a S5 version.
Have fun