Deep Explorer

Divers and Explorers education in Safe and Efficient Techniques to seriously DEEP Dive with multiple Breathing Mixes
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  • Lectures 39
  • Contents Video: 2 hours
    Other: 1.5 hours
  • Skill Level All Levels
  • Languages English
  • Includes Lifetime access
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About This Course

Published 4/2013 English

Course Description

This is a Deep Explorer course for Deep Divers and/or Divers interested in getting involved in Deep Diving beyond the recreational No Decompression Limits, also called Technical Diving, find out what it takes to Deep Dive.

The Deep Explorer course will take you thru clear & straight to the point techniques to be able to have the flexibility you need to explore deep enviroments.

A Deep Explorer need to be able to modify the plan as need and adjusting decompression to whatever situation may arise.

Choosing the right Mixes to breath by enriching them with Oxygen and/or Helium to reduce Gas Toxicty, requires mathematics calculations that are only as complex as the person who explain them, is reall y basic math in fact.

Handelling the equipment to perform this dives is also a big part of the challenge, but if don't systematically is quite progressive and fast to learn, specially when you get an evolve technique based in Deep Diving applications worldwide in various enviroments for the last 20 years.

Expect Videos including Voiceover Powerpoint penetrations with detailed information, Topic Quizzes.

This information is intended to be use by capable and qualified Deep Explorers & Divers, or for students soon to participate in a formal DPV class, including land drills and in water skills practice.

We have include the following main Deep Explorer Course Topics :

  • Equipment Configuration & Use
  • Nitrox, Trimix and Oxygen
  • Standard Mixes
  • Decompression Exposures & Rules
  • Emergency Procedures

Also we review the Basic Diving Skill for

  • Dive Planning
  • Bailout Considerations
  • NDL

NOTICE : This Course is mostly included in the Become a Safe & Efficient Dive Explorer

WARNING: DEEP DIVING IS POTENTIALLY DANGEROUS, WE HIGHLY RECOMMEND YOU APPLY THIS INFORMATION UNDER DIRECT SUPERVISION OF A PROFESSIONAL


What are the requirements?

  • NONE

What am I going to get from this course?

  • Get educated in how to use ALL Diving mixes
  • Be able to figure decompression with any Mixes or Depth, out of the top of your head !
  • Equipment Handelling Tips
  • Emergency Procedures

What is the target audience?

  • Divers interested in learning how to Safe & Efficiently Dive Deep
  • Technical Divers
  • Deep Divers
  • Curious in finding out what it take to seriously Dive Deep
  • Dive Explorers

What you get with this course?

Not for you? No problem.
30 day money back guarantee.

Forever yours.
Lifetime access.

Learn on the go.
Desktop, iOS and Android.

Get rewarded.
Certificate of completion.

Curriculum

Section 1: About this Course
00:25

.

    In this IDREO course you can create a solid foundation to become a better diver, understand the requirements and skills need to pratice in order to become a Safe and Efficient Dive Explorer.

    Expect videos, voiceover presentations, documents, quiz and written examinations in the following Topics:

    General Diving Knowledge

Equipment Configuration (OC/RB Back & sidemount )

Dive Planning

Deep Diving

Nitrox

Trimix Decompression

Extreme Exposures

IDREO was found as an International Organization to link worldwide explorers and share experience and knowledge to reach further where no Man been before, for more information visit www.idreo.org

As a way to increase safety among explorer IDREO promotes Exploration Mentoring thru a seminar in actual Exploration and Research Projects, however as many divers wishing to participate where lacking training and information.
Furthermore one of IDREO research projects is the Accident Analysis Project, AAP, found in 2011 increase in cave diving fatalities, to more than 10 times the yearly average, and divers involved where mostly under exploration activities the IDREO training was the response to promote safer and more efficent Exploration.

Section 2: Introduction to IDREO Training
02:36

Welcome to IDREO !



Nick Toussaint talks about the motivations of founding IDREO, Accident Analysis Project, IDREO Training and finally how to promote Safer & Efficient Exploration.



Nick Toussaint is an experienced Diver and worldwide recognized Cave Explorer. He is probably one of the most accomplished and a worldwide renown expertise as a Cave Instructor to all levels based on 18yrs experience teaching worldwide with a perfect ZERO accident record.



Nick Toussaint still trains Divers to all levels on all major cave destinations worldwide yearly, and is the main leader on the IDREOseminars. He has shared his passion and knowledge about cave diving at conferences in various diving shows, articles and even sport TV shows around the world and as well is an active participant in equipment development and testing specifically for cave diving. He started Cave Diving in the Yucatan Peninsula in Mexico, the most wanted location for recreational cave diving
and got NACD, TDI and NSS-CDS certified in the mid 90's and has taken Cave Instructor training with IDREO , GUE, IANTD, TDI, CMAS, UTD, NAUI, PADI, & SDI, while creating outline and diver programs at various levels for many of them.In 2008 received from NSS-CDS the Sheck Exley Award, with International endorsement, which is given for accomplishing 1000 non training cave dives in at least 5 countries.



Nick Toussaint has cave dived in 12 countries, and just about every cave system in Mexico. Starting in Quintana Roo, Merida in the Yucatan Peninsula but also In the North state of Tamaulipas; been privileged to explore many of them. Also very familiar with most popular cave diving sites in Florida and Europe, including France, Italian Alps/islands, Switzterland, Scandinavian mines, as well as various Australasia cave diving destinations.

You can contact Nick Toussaint by email




www.idreo.org

00:36
IDREO Seminars were born as a response to the increase of cave diving fatalities mostly under exploration like activities in 2011 as noted by the IDREO Accident Analysis Project .

Seminars are free of cost as the idea is to mentor divers wishing to participate in exploration and eventually create their own projects. The seminar participants need to be solid and experience divers with certification in Mixed Gas Diving, Rebreather, DPV and Cave Diving.

Due to divers needing to fill holes in previous training, updating diving techniques or still under diver formation step IDREO decide to provide comprehensible and to the point IDREO Diver Training program.
5 questions

Why not check how much you now know about IDREO ?

IDREO Online Courses focus in 5 question per Quiz.

Section 3: Basic Diving Knowledge
07:48

A solid Dive Plan is paramount in diver safety, but also critical in achieving dive goals.

The Dive Plan simple touches all the limits the team has for a given dive and

also underlines a "LIMIT LINE" when turning around back to surface should be happening.

Remember in a good plan limitations are hardly ever reach simultaneously,

so this mean you may have to call the dive on gas, time, depth or anything else,

so don't expect all Dive Plan limitations to happen together.

 
Divers should consider calling the dive anytime reaching ANY of the giving limitations.
11:46

When discussing Bailout we are talking as the back up plan to get out of trouble, in diving the worst possible scenario is sharing gas from the furthest point of penetration.

Proper Bailout is enough quantity of gas to make a OOG scenario work from furthest penetration point back to the surface, divers require to be able to make acurate estimations of gas need, plan adequate redundancy for further failures and be able to handle the bailout carrying options such as double tanks, stages bottles, deco bottles, multiple scooters and DPV's maybe be need to make the Bailout feasible.

Variations of Bailout are Minimim Reserve and Rock Bottom with basically same deifinition but applicable to specific situations such as a direct ascent to surface vs tunnel trael prior the ascent.

Indentify the Bailout calculation criteria and the options divers have in order to provide this important safety feature to all planned Dives.
12 pages

Standardized Hand Signals make extremely fast and accurate comunication while underwater, without having to Stop and write down what is going on in your wetnotes. Wetnotes are mostly used for Data gathering.

Repetitive task are best served by a specific set of Hand Signals, notice gloves or to slow or fast movements make create complications when aplying Hand Signals for communication.

Basic Dive Signals

12:00

All divers must be reasonably educated about Basic Diving Equipment function and operation as well as periodical maintenance.

The Basic Diving Equipment is Open Circuit and is a redundant (back up) version of the traditional Single Tank Diving, the extra components greatly increase diver task loading if not properly configured.

We should strive to bring only what we need for the dive,  making sure we don't leave nothing we need behind but more important we are not dragging stuuf we don't need. Owning a piece of Basic Diving Equipment does not automatically means we have to take it.
02:15

The Diving Bottles choices available for carrying efficiently the different gas need during a dive are very much define by material and size but also a keypoint is the configuration options.

04:02

Rigging a set of two tanks for techincal or cave diving is usually refer to Doubles as they provide redundancy more than just twice as much gas as when diving on traditional single tank set up.


How to Assemble a set of Double Tanks is the starting point to understand where and why the hoses and equipment is placed, the configuration has gone thru continuos evolution since the 1960's matching the equipment development, but also adapting to the new technology such as DPV and Rebreathers.
Nonetheless Open Circuit Doubles is consider by most reliable diving equipment.

The Doubles configuration as core uses a wing and a backplate which are then wingnut bolt to a set of manifold double tanks, each bottle has a first stage and second stage each, one of them is fit with a long hose to facilitate sharing gas in single file thru restrictions or make an ascent separated to avoid buoyancy issues.

Light for comunication and Primary Light source in overhead enviroments is consider part of the Doubles system.

02:17

When in need to share gas with a dive partner is a lot easier and efficient to do so while each member has absolute control of personal buoyancy and trim, as other way need to complicatedly operate as one unit, which can result catastrophic if letting go of each other during ascents.

As well when in need to travel to tight restricted tunnels of passage can proof cahllenging and even impossible unless the team is equipped with a Long Hose in the main regulator.

The Long Hose typically is been 7ft, 2 mt long as standrd and is quite easy to handle it underwater if wrap around the diver torso and behind the neck, securing under the battery canister of the Light or electrical heating device.

When deploying the Long Hose switch to back up reg and offer what is the correct mix and working regulator out of your mouth.
Paramount in safety when diving with multiple breathing mixes in different bottles.

02:41

Sidemount Configuration is been available since the 1960's bu mostly taken advantage by eager Cave Divers, lately has become aparent to most recreational Divers and its great. Here are some simple configuration guidance as is not really that hard to figure out, however the planning in order to acomplish other than recreational open water needs to be taken seriously to avoid confusing redundancy needs resulting in extremely complicating a other way simple system.

03:38

Expert Divers use lights not only to look around but for efficient communication.

Light communications
is both Active & Passive.

In this lecture we review Light Communications and Light Signals the goal is to understand them better to take the most advantage from using them.

01:53

Divers can benefit of a reliable and durable Lighting System, as besides providing ilumination which is mandatory in the overhead is a great tool to get team attention and stay together thru passive comunication.

A Light Canister does provide enough burntime for making an extensive dive,
with expectancy usually no less than 1 hr burntime and as long as 15 hr,
minding repetitive dives and/or bailout plans times.

In any case the Canister Light should stay ON for the planned dive duration,
in fact it's duration maybe as well be a limitation in order to call the dive;
for example if you are going in and out a cave need to use half of the expected burntime going in,
just to make sure you won't run out of batteries upon exit.

The canister light are usually of two core parts the Canister itself and the light Head.
Both components are attach by a cable.
Dealling witht this cable could be a bit of out of the ordinary and natural at the beggining but quickly becomes part of the diver with a little practice and some tips to remember when using it,
even in emergecy situations such as sharing gas or failures !

Advice at properly dealing with canister light cable.

  • Use Goodman handle
  • Cable most be the "right" length
  • Understand each arm "needs"
02:10

Have a look how divers learn the Basics of line laying, trim buoyancy, comunication are as important as handeling the reel !

You must be capable of running a Primary line if thinkng in diving in the overhead enviroment.

03:01
In order to Build up and expand your DPV activities and planning, we need to establish the DPV Diving Basics.

All you need to know about DPV Diving Basics in a nutshell.

  • How DPV work
  • Basic Battery Burntime Management
  • Electrical Diagram
  • Mechanical Diagram
02:16
O2 Drop is the IDREO concept related to O2 comsumption while using Rebreather Technology.

The calculation of the O2 Drop strive to monitor and understand the result of Diver metabolism vs  injection of the Oxygen contain within the rebreathing gas inside a given unit. How much Oxygen is consumed and how much is replenished.

There is a few test to perform in order to not only understand the O2 Drop concept but personalize the results,
this test are included in all IDREO Rebreather training and review in the following lectures.

The risk for not knowing your O2 Drop are Hypoxia and DCS.
Section 4: Deep Diving Knowledge
22 pages

Deep Explorer Workbook to print and use as part of IDREO Deep Explorer classes.

This Deep Explorer Workbook is design to match the information need during participation of a IDREO Deep Explorer Class, we have several languages and strive to list the most updated version.
9 pages
This e-Book contains general information in the Diving Gases available for divers.

Thru the chapters the Diving Gases are reviewed, described and also some applications suggested, which is important to provide the diver with a general background in which to build a proceudres strategy.

In dowloadable section o fthis E-book you can study the Diving Gases in Mixes as individual topics, such as NITROX, TRIMIX, ARGOX, HIDROX, HIDRELIOX as well as a quick reference gas chart.

IDREO Standard Mixes are discussed in the following lecture IDREO Standard Mixes.
20 pages

IDREO Oxygen Toxicity E-Book is acompilation of the latest information known on Oxygen Toxcity, Hyperoxia as well as Hipoxia.

Is very important to understand the industry standrds before attempting to manipulate, transform or adapt it to specific or special needs.

The history of research as well as the conventinal monitoring, calculation and strategy to manage Oxygen Toxicity risk are part of the topics each diver must review
15 pages

One of the keypoints in making a succesful and flexible Decompression strategy is to repeat use between a few gases, as in Standard Mixes for standard applications such as Bottom Mixes and Deco Mixes.

The Standard Mixes should respect parameters reflecting the risk the diver and team agree to cope with, specially in O2 parameters and Narcosis. However is no secret nowdays that "Deep Air " risk is not only Nitrogen Narcosis the "real danger" of breathing Air at depth below 30-40 mts is Oxygen Toxicity the real enemy, which opposed to Narcosis will make diver convulse and loose conciousness. The Oxygen limits applied by IDREO are min .40 PO2 in any RB operation, perferably below .7 and Max 1.0 PO2 at any bottom mix portion of planned dive, 1.2 PO2 on below 90mt deco or short deep exposures, PO2 1.4 on "Deep Deco" or brief NDL dives, 1.6 in 21-6mt deco stops and PO2 2ata inside habitats.

The Explorer don't have necesity or willingness to high level of Narcosis while driving DPV's,  monitoring Rebreather's breathing mixes & gases, navigating thru overhead tunnels, survey activities and/or research activities, so the Mixes Narcosis level are limited to 30mt/100ft max.

Gases identification in water is strictly by MOD, however Background of MOD can also add the color codes, notice that monitoring PO2 thru digital gauges in RB is required during training and IDREO projects.
17:45

One of the keypoints in making a succesful and flexible Decompression strategy is to repeat use between a few gases, as in Standard Mixes for standard applications such as Bottom Mixes and Deco Mixes.

The Standard Mixes should respect parameters reflecting the risk the diver and team agree to cope with, specially in O2 parameters and Narcosis. However is no secret nowdays that "Deep Air " risk is not only Nitrogen Narcosis the "real danger" of breathing Air at depth below 30-40 mts is Oxygen Toxicity the real enemy, which opposed to Narcosis will make diver convulse and loose conciousness. The Oxygen limits applied by IDREO are min .40 PO2 in any RB operation, perferably below .7 and Max 1.0 PO2 at any bottom mix portion of planned dive, 1.2 PO2 on below 90mt deco or short deep exposures, PO2 1.4 on "Deep Deco" or brief NDL dives, 1.6 in 21-6mt deco stops and PO2 2ata inside habitats.

The Explorer don't have necesity or willingness to high level of Narcosis while driving DPV's,  monitoring Rebreather's breathing mixes & gases, navigating thru overhead tunnels, survey activities and/or research activities, so the Mixes Narcosis level are limited to 30mt/100ft max.

Gases identification in water is strictly by MOD, however Background of MOD can also add the color codes, notice that monitoring PO2 thru digital gauges in RB is required during training and IDREO projects.
04:44

NDL stand for NO DECOMPRESSION LIMITS, but thruth is there is not such a thing as we relay on ascent speed, 10 MT / 30 FT per minute or if you wish 20 second stops each 3MT / 10 FT so to explain.

NDSL may be more accurate and stands for No Decompression Stop Limits, which are the minimum times a diver can stay underwater at a given depth before having to perform actual decompression stops before surfacing, so pretty much a direct ascent to surface, as long as respecting a defined minimum ascent speed usually 10mt/30ft per minute.

NDSL Times varies with depth and therefore flexibility in figuring out the times is key in manging efficient and safe exposures.

IDREO offers an easy and accurate rule to "on the fly" been able to figure your NDSL, while at the same time build up the skill need to manage the flexibility exploration diving will require. Notice the plan dive is not always possible to know ahead of time or can change dramatically without expecting it while underwater.

In short 120 rule.

Nitrox
04:49
02:20
The IDREO Decompression strategy are based in the easiest procedures to have flexible rules to be able to explore the unknown, as in exploration teams are expecting depths changes and extended bottom times, but you just never know in real exploration what is going to happen and from what profile you are going to need to decompress from.

The flexibility apply in exploration Deco Strategy is also desirable and useful for every day diving, we apply it at all levels:

NDL RULES

NITROX RULES

TRIMIX RULES


The IDREO Deco Strategy and Deco rules are not magic and need to be understand fully in order to apply them correctly.
07:49
Understanding how to take advantage of a deco time + deco gas(es) combination thru Decompression Curve Management increases the quality of the time spend at decompression.

Oxygen Window concept focus on highest PO2 exchange possible between tissues and a given period of time. The techniques used as to increase the pressure differential is uderwater Gas Mix switches, to Oxygen Rich Mixes, that can enhance and even accelerated inert gas desaturation from Diver tissues.

Decompression Curve Management is paramount on Diving Decompression Theory.
2 pages

 Many gasses follow the ideal gas law very closely at low pressures. As gas pressures increase blending calculations using the ideal gas law begin to loose a little accuracy. This is because no gas is truly ideal. In most cases the difference in blending plans created using ideal gas verses real gas calculations fall within an acceptable margin of error. iMixer provides both sets of calculations.

The Ideal Gas Law describes the relationships among the four variables temperature (T), pressure (P), volume (V), and moles of gas (n):

p V = n R T

p = absolute pressure (not gauge pressure)

V = volume

n = amount of gas (moles)

R = ideal gas constant

T = absolute temperature (Kelvin)

Real gas laws try to predict the true behavior of a gas by putting in terms to describe attractions and repulsions between molecules. One real gas law is the van der Waals equation:

[P + (n2a/V2)](V - nb) = nRT

P - pressure

V - volume

n - number of moles

T – temperature (Kelvin)

R - ideal gas constant

The first parameter, a, is approximates the attractive forces between molecules while the second parameter, b, is approximates the repulsive forces. Tables for a and b values for a specific gas can be found in many Chemical Engineering textbooks.

If the units of P, V, n and T are atm, L, mol and K, respectively, the metric value of R is 0.0821 while the imperial value is 10.73159. The constants a and b for N2 is 1.408 and 0.03913. For O2 the a and b constants are 1.378 and 0.03183. For He they are 0.03457 and 0.0237.

To calculate the volume of a real gas, V in term n2a/V2 can be approximated as: nR/T (from the ideal gas calculation). Volume and pressure can be calculated with these formulas:

V = nR3T3/(PR2T2+aP2) + nb

P = nRT/(V - nb) - n2a/V2

Calculations using the ideal gas law can be performed in units of pressure (PSI, BAR) or volume (FT3, L3). Computations are simple and easy to validate. Calculations using the van der Walls equation are performed using quantity of gas (mols).

Due to the correction factors a and b approximating the attraction and repulsion of molecules the process of producing a blending plan is a little more complex. We start by figuring out the quantity of the O2, N2, and He components of the starting gas. We then calculate the quantity of gas (in mols) to be added at each step in the process using either O2, He, bank gas, or top off gas. After adding gas at each step we recalculate the pressure and continue adding gas until we reach our target.

A good source for information on real and ideal gasses can be found at SoftChemistry online (www.molecularsoft.com).

iMixer  can generate blending plans using both ideal and real gas calculations.

00:27

Gas Analysis is to verify the gases content within a Mix.
When Air have been enrich with Oxygen to create Nitrox mixes you must verify the Oxygen content by analyzing the bottle.Is very simple to perform Gas Analysis of a mix content by using a digital gauge + gas sensor unit, it does read the Fraction of the gas usually FO2 but also can be done in Helium.

Oxygen analyzers are most common, Helium analyzers are availble to and t expect to find O2 and Helium analyzers combined in one. Lately CO analyzers are becoming available and a great way to control unreliable gas filling situations or the gas use in those extreme dives.

Gas Analyisis is done to proof Mix against bottle MOD

3 pages

All training in IDREO is based on the Accident Analysis in 2011 the main reasin of most fatalities involved switching to the wrong bottle, which means innapropiate Gas Switching Procedures or aids.

 IDREO recomends MOD in all breathing bottles and analyzing before dive any gas used.

As well as a detail list of standard Gases by bottle.

 In this article is discuss many of the important and valuable points to consider when switching bottles adn it's containing breathing gases while underwater either while on Open or Closed circuit.

 Don't forget to look at the videos below in how to perform basic deco bottle and advanced Gas Switching Procedures.
00:51

The Basic Deco Bottle Switch Procedure is identify bottle and counter check MOD with the actual depth on depth gauge, make sure your dive partner is supervising your switch and if he or she is distracted just wait. Once you switch wait and supervise your partner gas switch unless you agree for your buddy to do it first, but in any case it should be done one at the time this is the most dangerous part of the dive and team should be fully focus on performing the switch in the safest and more efficient way possible.

In this realistic video a Basic Deco Bottle Switch demo is done by an average diver and performace to be considered as the minimum acceptable need to apply for an IDREO technical diving class.

Most important issue is to verify the gas MOD, buoyancy control second and trim last.

01:12

After stage or deco bottle use you may need to perform a Basic Back Gas Switch, so again make sure you are letting people know in the team as chances are they also may need to do it, however is unlikely if emphasis in proper Dive Planning is beeen dine, however it will pretty standard with a stage/deco bottle failure.

In this realistic video a Basic Back Gas Switch demo is done by an average diver and performace to be considered as the minimum acceptable need to apply for an IDREO technical diving class.

DEEP DIVING QUIZ
6 questions
Section 5: Emergency Procedures
05:09

IDREO recommended procedures to adjust Decompression in the case of Deco Gas Lost. The reality we face with bottle failures could en up in missing a gas to complete the planned deco, having at hand other breathable gases will allow us to resume the Decompression obligations by Adjustment of the planned stop times.

4 pages

In-water recompression or underwater oxygen treatment (IWR) is the emergency treatment of decompression sickness (DCS) of sending the diver back underwater to allow the gas bubbles in the tissues, which are causing the symptoms, to resolve. It is a risky procedure that should only ever be used when the time to travel to the nearest recompression chamber is too long to save the victim's life.

Carrying out in-water recompression when there is a nearby recompression chamber or without special equipment and training is never a favoured option.The risk of the procedure comes from the fact that a diver suffering from DCS is seriously ill and may become paralysed, unconscious or stop breathing whilst under water. Any one of these events is likely to result in the diver drowning or further injury to the diver during a subsequent rescue to the surface.

Section 6: Course Completion
4 pages
You can test yourself in this Deep Explorer Test, all the important information a diver needs to know is included in this test make sure you have not miss anything !

Test available in various languages.

Notice : This test is to be printed and completed when you are joining IDREO Training.
00:37
Congratulations for completing this course !

In this course in order to become a Deep Explorer  we review and strength the following course sections :

  • Deep Diving Knowledge
  • General Diving Knowledge

You have complete all lectures included in this course, you can verify by the green dot next to each lecture on the course dashboard.

Don't loose the chance to verify you got a hang of all basic information by testing yourself in the written examination.

If you have any questions attend the live webminar, place them on the questions board or contact us at info@idreo.org

We sincerely wish you awesome Underwater Adventures !
00:33
If you are wondering where to take IDREO Training we have a calendar in the IDREO website training section.

IDREO offer Seminars by application and the seminar is given to participants during the project itself.
The training level required for participating in the Seminars/Projects may be too high for many,
however preparatory training can be arrenge with a hand full of IDREO Explorers which are also Instructors worldwide.

Contact IDREO Instructors directly and enquire for schedule classes or ask to book a class in a choice date, with several languages spoken should not be a problem to get your training in your language if you prefer.
Section 7: More IDREO Courses
Become a Safe & Efficient Dive Explorer
01:12
00:31

This is a crash course for DPV owners and/or divers interested in getting involved in DPV diving, finding out what it takes to dive them from very basic planning to the most advanced way of using multiple units in miles long and several hours dives even in overhead enviroments.

Expect Videos including Voiceover Powerpoint penetrations with detailed information, Topic Quizzes.

This information is intended to be use by capable and qualified DPV divers, or for students soon to participate in a formal DPV course, including land drills and in water skills practice.

We have include the following main DPV Course Topics :

  • DPV History
  • DPV Planning Sequence
  • DPV Math
  • DPV Failures

Also we review the Basic Diving Skill for

  • Dive Planning
  • Bailout Considerations
  • NDL

NOTICE : This Course is mostly included in the Become a Safe & Efficient Dive Explorer

WARNING: DPV DIVING IS POTENTIALLY DANGEROUS, WE HIGHLY RECOMMEND YOU APPLY THIS INFORMATION UNDER DIRECT SUPERVISION OF A PROFESSIONAL
Rebreather Explorer
00:15
Cave Explorer
00:30

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Instructor Biography

IDREO's goal is to actively promote diving exploration, transforming experienced divers in capable teams of explorers with the most advance technology.

DEF, Dive Explorer Foundation welcomes non divers interested in discovering the underwater world independently, while using the safest diving techniques.


Founder of IDREO and DEF is Nick Toussaint an experienced Diver & Instructor Trainer, worldwide recognized Cave Diving Explorer and Cave/RB Diving expertize.

He has shared his passion and knowledge about cave diving at Conferences in various Diving Expo's, Diveshows and even Sport TV Shows in 18 countries around the world.

Avid writer at cave-books with manuals, guides and cave diving related books and several magazines articles.

Active participant in development and testing of diving equipment specifically designed for cave diving. Currently is Founder/Owner/CEO @ White Arrow Cave diving equipment brand and developer/consultant to various other renowned current tek/cave diving brands.

Accomplished worldwide renown expertise as a Cave Instructor to all levels based on 20yrs experience teaching worldwide, over 1000+ certified students at perfect ZEROaccident record.

Nick Toussaint trains Divers to all levels on all major cave destinations worldwide yearly and is the main leader on the IDREO Explorer Seminars and Instructor Training Director

He started Cave Diving in the Yucatan Peninsula in Mexico. The riviera Maya has developed in the most wanted location for recreational Cave Diving Got NACD, TDI and NSS-CDS certified in the early 90's and since then has taken Cave/Trimix Instructor and Instructor Trainer ratings with several training agencies and organizations such as IDREO, GUE, IANTD, TDI, CMAS, UTD, NAUI, PADI, & SDI, eventually creating Cave, DPV and Rebreather outlines and updating Diver programs, at various levels, for many of them.

Author of the succesful "become a Safe and Efficent Dive Explorer"Online course. The most complete diving information source (11hr of content) to prepare divers for any level training.

In 2008 received the NSS-CDS the Sheck Exley Award with International endorsement, which is given for accomplishing 1000 non training cave dives in at least 5 countries.

Nick Toussaint has cave dived in 18 countries, training divers and/or and performed long range rb cave diving explorations in most of them.

Cave Diving Experience includes all major cave diving destinations and just about every cave system in Mexico. Starting in Quintana Roo, Merida caves in the Yucatan Peninsula but also In the North state of Tamaulipas; Privileged to explore many of them and currently holds the longest cave dive record in Mexico with 14.5hrs, together with dive partner Shane Jeckel in EJPP Project. (exploring the Pit "next generation tunnel" from Dos Ojos Cavern main entrance).

Yearly conducts Dive trips/expeditions to most popular cave diving sites worldwide, including Florida and all over Europe such as Italian Alps/islands,(OSP/SKP Project) Switzterland, Spain, Scandinavian mines and France, where he participated in the EKPP project exploring "Doux de Coly" Europe's longest cave System.

Also very familiar with various unique Australasia cave diving destinations.

Nick has now been touring the world and teaching for more than a decade, acumulating tons of knowledge that improve IDREO/DEF training programs.

His passion is a delight, respected and renowned for his uncompromising way of passing on a "merge" between the traditional old school and new school cave diving techniques.

Instructor Biography

Scubacave Marc Aznar, Instructor IDREO

I will be your Deep Explorer1 and DPV instructor for IDREO courses!

Welcome to a new way of safe diving

Diving Education :

-MSDT PADI 2003

-EFR instructor 2003

-Oxygenotherapy 2003

-Tec Deep instructor DSAT-PADI 2006

-Gas blender and technical support compressors BAUER 2006

-Extended Range instructor TDI 2006

-Adv nitrox instructor TDI 2006

-Deco procedures instructor TDI 2006

-Trimix diver IANTD 2005

-Adv trimix diver TDI 2005

-Rebreather Dolphin diver IANTD 2007

-Intro to cave diver TDI 2009

-GUE Fundamentals diver 2010

-Full cave diver, 2010

-Basic boat license ( French permis cotier)

-IDREO Deep explorer instructor

Cavern instructor TDI 2013

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