DiveNav, Inc.
November 30, 2011

Making Progress with divePAL


November was quite a busy month for us and we managed to release two updates for divePAL.

The major change for the Windows version of divePAL is the possibility to import dive logs - or complete logbooks - from other programs; more specifically you can now use divePAL to import logbooks directly from Suunto DM3
or from any other dive log software - as long as you export the logs using the DAN DL7 files (a special thank you goes to Dr. Petar Denoble from DAN for providing the specs)


We also released a new iPad version of divePAL that now includes the possibility to access "the cloud-book" (logbook in the cloud).


Basically you can now use divePAL Windows to import your dive logs and then use the iPad version of divePAL to analyze them on-the-go. Cool eh?


Next will be to import dive logs into divePAL directly from your dive computer ... and this is going to be quite a challenge as every manufacturer has its own "standard"  (sometime, but not always).


Alberto Mantovani 



Alberto Mantovani (aka eDiver)

President & CEO

DiveNav, Inc
Fine Tuning a Decompression Algorithm
Part 2
As you might remember, in our October newsletter we had an article addressing the decompression algorithm we are using in our eDiving and divePAL simulators. More specifically, in that article we described how we entered into divePAL the "de-facto industry standard dive test profiles" published in ScubaLab article: Digging Deep on 2009's New Dive Computers.

In this second part we will look at the results of our "original" (before we modified it) decompression algorithm.

Once the dive profiles were ready, we "dove" them with divePAL, checking for the No Deco Time at each pre-defined point (depth and time).

We then collected the data in a spreadsheet and compared them against the results presented in the ScubaLab article mentioned earlier.

I was not surprised to find out that our own implementation of the Buhlmann ZH-L16C algorithm was the most aggressive of the group as I did suspected manufacturers of dive computers wanted to be cautious with their own algorithm.
Here, as an example, the comparison results for Dive 2:

divenav community 15000 members

Just few notes on how to read this graph:
- the axis on the left side is NDT in minutes for each point measured
- the axis on the bottom is dive time in minutes
- the axis on the top is depth in feet

The RED LINE represents our original algorithm.

Clearly it was the most aggressive of the group as it was providing the highest NDT value for every point being measured.

After analysing the results, we decided that we wanted an algorithm that will fit in the "middle of the road". But how can we achieve this?

.... to be continued ....


Monastery Wall
New dive site in Monterey
Early this year I made the resolution to release - at least - one virtual dive site for the Northern California and in fact I started to work on it right away .... but the "distractions" of the day to day activities made me postpone this.
I am glad to say that we have - finally - released the
Monastery Wall

virtual dive site.

The main feature of this dive site is the wall that drops to a depth of more than 200ft.

But the real hidden gem is the fact that this is the deepest site we ever released with a maximum depth of almost 1,200ft.

Don't rush trying to establish a record for the deepest virtual dive!

Your Voice
From the winner of the Oceanic VT3 dive computer
This is what George had to say about the VT3 and the related online class:

"I have recently used the VT3 while diving off the coast of Morehead City, NC during some sand tiger shark dives among some of the wrecks out there. The online class had me ready to go on my first dive, and I was already familiar with the use of the computer due to the online training. I had never dived using a computer before, and I really felt like the VT3 makes for a much safer diving experience with its alerts system. The integrated air sensor also cut down on drag, and the watch-style computer placed all the information I need right at my wrist. Overall, I had a great initial experience with the VT3."

Safe diving George and tell your friends about DiveComputerTraining
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In This Issue
Fine Tuning a Decompression Algorithm...Part 1 of 3
New dive site: Monterey Wall
Your Voice
DCT Contests
Online Classes
 dive computer training
Since the last newsletter we have released one more online class:
Aeris XR-2  

As of today we have released 39 Online Classes:

AERIS:          XR-1, XR-1 Nx, MantaAtmos AI, XR-2
DiveNav:      Introduction to  Dive Computers, How to Choose a Dive Computer
Mares           Puck
Oceanic:       Veo100, Veo 250,  
Pro Plus 2, OCS,   Veo 1.0, Veo 2.0, Veo 3.0, VT3, Geo, Geo 2.0
Atom 3.0,
OC1,   VT 4.0, B.U.D.        
OceanReef: UW Communications I,
Scubapro:    Galileo Sol,
Aladin 2G
Shearwater: Predator
SubGear:      XP-10
Suunto:         Gekko, Zoop, Cobra,
Cobra 3,  Vyper Air , D4, D6, D9, HelO2 , Vyper
TUSA:           ZEN IQ-900

You can enroll in our Online Classes either using an ACTIVATION CODE, or BUBBLE CREDITS, or by purchasing them online via PayPal.
If you just bought a dive computer, make sure to ask your dive store and/or your instructor for the class ACTIVATION CODE.

If you are a dive retailer, or an Instructor, you can purchase ACTIVATION CODES at our ONLINE STORE.

Use for free all gear

Dive all sites

Don't pay for refills

All Computers in divePAL

free divePAL Nitrox    

Get Premium Service   

divenav newsletter june 2010
Dive Computers Contests
Thanks to our sponsors, you can WIN real dive computers!
To participate in a dive computer contest you need to take the online class for the model-specific dive computer and to win the dive computer you need to be the fastest one to complete the class.

Here is a list of contests:
Oceanic Pro Plus 2     CLOSED - Stephen Domorod, North Haven, CT.
Suunto Cobra             CLOSED - Frederick D. Baker, San Francisco.
Oceanic Geo 2.0        CLOSED - Mathew Barrett, Venus, Florida.
Tusa Zen IQ-900        CLOSED - Steve Simpson,Tempe, AZ.
Oceanic Veo 3.0        CLOSED - Jorge A Medina, Hialeah, FL.
Scubapro Galileo Sol  CLOSED - Robert Murry, Cape Coral, FL.
Oceanic Veo 1.0        CLOSED - Kyle Kenley, Rockville, IN.
Aeris Atmos AI         CLOSED - Darrell Brackett , from Lenoir City, TN.
Suunto Zoop             CLOSED - Angela (Angie) Unruh, from Rogers, AR.
Suunto Cobra 3         CLOSED - Rachel Wyatt, from Clarksville, IN.
Suunto D4                    CLOSED -
Alden Marshall, from Mabank, Texas.
Oceanic Veo 2.0          CLOSED - Rex Barlogi, from Gillette, Wyoming.
Suunto Vyper Air         CLOSED -
Oceanic VT3                CLOSED - George Probst from Blacksburg, VA.
Suunto D6                    CLOSED - Ray Chesney, from London, Kentucky.
Suunto D9                    CLOSED - Timothy Kuerzi, from Orlando, FL.
Mares Puck                  CLOSED

Suunto HelO2               Nov. 30, 2011
ScubaPro Aladin 2G     Dec. 31, 2011
Shearwater Predator   Jan. 31, 2012
Aeris XR-1 NX             Feb. 28, 2012
SubGear XP-10           Mar. 31, 2012

Suunto HelO2ScubaPro Aladin 2GShearwater PredatorAeris XR-1 NX Dive ComputerSubGear XP-10

About DiveNav, Inc

About DiveNav

DiveNav Inc., headquartered in Tustin, Calif., is an innovative company developing the leading-edge eDiving® scuba diving simulator, the DiveComputerTraining® service and the industry first divePALTM App.

eDiving allows users to Explore, Learn and Play in a virtual underwater environment. facilitates computer-assisted SCUBA diving.

divePAL allows divers to easily plan, analyze and log their dives.

eDiving and divePAL for Windows can be downloaded from
The DiveComputerTraining service is available at

divePAL for iPad is available on iTunes or on Apple App store

Oceanic OC1 Online Class