Tag Archives: side mount



The Razor Side Mount System is a integrated system designed specifically for side mount diving. It can be used for both cold water diving


  • Razor Harness 2.5
  • Redundant BAT Wing 2.5
  •  T Weight System
  • Universal Spares Kit
Price: $692.00
  • BAasic Razor system 2.5
  • Spare Side Mount Bungee
  • 2 Double enders for the Expandable Side Mount Pouch
  • Expandable Side Mount Pouch 2.5

Price: $859.00

  • Expandable Pouch 
  • 2 double-endeers
  • Spare Bungee Kit


Designed to be used with the Razor weight pocket base layer to place the weight pockets exactly where you need them


Primary wing has a standard Power Inflator and Manual Dump valve
Backup wing has an oral inflator



Diving Training

Deep Dark Diving dive training Philosophy

We offer high quality training in technical diving and cave diving in Playa del Carmen, all the Riviera Maya and in Yucatan, Mexico.

We strive to provide the best learning experience. The objective is to achieve the highest level and learn from each moment. Then by using what you learn you will improve your performance and the safety of your diving.

There is a minimum days required by standards for technical and cave diving training, but be aware that you will personnaly need to meet the diving standards.

All training is based on skills mastering. We do our best to share our experience and knowledge with you and ensure the efficiency of your training but technical or cave diving certification is not garanteed.

Fun diving on the coral reef in the Caribbean Mexico


70% of the earth surface is water. Start exploring! Open Water courses for beginners all the way to Instructor


Fun and Safe way to dive for recreational divers - Ideal for Cave divers, Solo Divers and Photographers

Installing a jump spool in Cenote Minotauro


Learn overhead diving in the most extensive underwater caves on the planet. Master buoyancy and precise control of every movement.


Experienced diver? It is time to extend your dives and explore new environments. Nitrox, Deco Procedure, Mixed gases, Stage Cave, DPV, CCR

Dive Razor Original

Razor Side Mount Course

The Razor Side Mount Course allows you to experience the freedom and flexibility of diving Side Mount at its best.

The Razor Side Mount System was designed by expert divers and explorers Steve Bogaerts and HP Hartmann.

Many years of experience and many hours of side mount cave diving and exploration have led to the development of the Razor Side Mount System. And along with it appeared the necessity of developping a course program to be taught by experienced instructors comitted to high quality standards.

During the course you will learn proper adjustment of the harness, cylinder configuration, regulator configuration, proper weighting and weight distribution for the best trim, regulator switches with one hand, different propulsion techniques, equipment failures handling (bungee, bolt snap, tank clamps, bat wing, regulators, etc.) as well as other general sidemount skills adapted to the use of the Razor system.

Train with the best using years of experience shared with you through the Razor Side Mount course

But be aware… Once you go Side Mount, you never go back!!

  • Razor Side Mount CourseCertified Advanced Open Water Diver
  • 25 logged dives beyond training dives
  • Course has to be in your own Razor Side Mount System complete as some the skills are specific to the equipment
Course Duration:
  • 4 days
  • 6 dives
Why Razor? and why a Razor Side Mount course?

When Steve Bogaerts and HP Hartmann come together to design from scratch a full set of gears and make it evolve to what it is today you can expect something really efficient and of high quality! And it really is!

Many years of experience and many hours of Side Mount Cave diving have led to the Razor Side Mount System and further on to the Razor Side Mount Course program.

And today we are really proud to be part of the team of Razor Instructors (Géraldine Solignac, Razor Side Mount Instructor) and to be able to share that knowledge with you and share as well all the fun that goes with it.

What you will learn?
  • Proper adjustment of the harness
  • Cylinder configuration
  • Regulator configuration
  • Proper weighting, weight distribution for the best trim
  • Regulator switches with two hands and one hand
  • Different propulsion techniques
  • Equipement failures (bungee, bolt snap, tank clamps, wing, regulator…)
  • Out of Air procedures
Why is the Razor Side Mount Course a bit longer than other Side Mount courses?

Because this is how long it takes to get a new side mount diver to master the skills the way they will be used your entire diver career and your Razor harness and wing will take all those steps with you.



Technical Diving

You’ve been enjoying your diving and training, and you liked learning about diving? and now  you want to go further? Here are the different courses that will follow…




Start with the basics of tec diving. Learn dive planning, new water skills, gear configuration and improve streamlining, buoyancy and propulsion techniques. If you are planning to go on with your Tec diving in Backmount configuration this course is a must to set the right bases.

side mount cave dive at cenote the Pit - Dos Ojos Mexico


Do you want to explore your first step to technical diving and with two tanks. This course is ideal for you to get familiar with the side mount configuration. If you are already a Tec diver you will apply your skills to Side Mount. And if have decided that Side Mount is your configuration for your Tec diving this course will set the base.

Razor side mount course


The Razor Side Mount course goes further than the basic Side Mount course. It covers all the basics for tech and cave diving and will be a great fundation for the following tech course. The Razor harness will follow you throughout your technical diving career.



Nitrox sticker SDI TDI - TDI Nitrox Course


A first approach to technical diving and the use of mixtures. And for those already Nitrox certified diver it is the opportunity to thoroughly review the basic principles and fundamental laws of physics used in diving.



You will learn the physics and physiology for diving with gas mixtures containing more than 40 % oxygen. This is the opportunity to further extend of your dive time without going into decompression limits.



In this course you will learn to plan and execute dives with decompression, choose your gas and the development of emergency plans.


extended range dive training


Exciting dives down to 55m/180ft but helium is nowhere available? you will learn how to safely do these dives using air and deco gases.



Add helium to your diving. Go deeper, easier breathing, and reduce narcosis. It makes your diving a lot safer and opens a lot of possibilities down to 60m/200ft.

Advanced trimix


Congratulations! you reached the top level of Open circuit training. Use mix with less than 17% O2 and as deep as 100m/330ft. And be among the most elite divers.

Side Mount Diving

Side Mount diving looks incredibly easy and confortable and yes it is! Side Mount configuration has many advantages when learned and configured properly.

It originates from cavers in the UK in need of a configuration that facilitates penetration of tight sections of cave. Additionally it allows easy access to the valves, provides easy and reliable gas redundancy, and tanks can be easily removed if needed. These benefits for diving in confined spaces.

Advantages of Side Mount Diving
  • More flexibility
  • More security
  • Better streamlining
  • Ideal for cave diving
  • Very safe and confortable for open water diving.

Side Mount diving at the Pit

 So make sure you get the right training from the start amd build up on the skills.

And make sure you practice, practice and practice some more!

What you will learn during the Side Mount diving course:
  • Gas management
  • Psychological considerations of technical diving
  • Equipment choice and configuration (Tank, Regulators, harness…)
  • Communication (light and hand signals)
  • Problem solving in a sidemount configuration (Air sharing…)
  • Conservation


The basic course for tec divers wishing to learn a new configuration. If you wish  a more in depth course in a Razor harness, with solid skills to build upon during cave diving or more advanced technical courses.


Cavern Diver Course


First step in the Overhead Environnment during the TDI Cavern diver course - Cenote Carwash (Actun Ha) Tulum - Mexico

The cavern diver course is your first step in overhead environment diving. Through this course, you will build up the skills to dive safely within the natural daylight and a short distance from the exit. Not only you will learn about proper planning, procedures and techniques for cavern diving but also about the hazards and how to deal with them. And of course, you will now enjoy your cavern diving in the Cenotes to a much higher level of knowledge and safety.

The cavern diver course is the first part of the Cave course. After your training you will know what to expect and decide if you keep going.

  • Minimum of 3 days
  • Open water training
  • Minimum 4 cavern dives
  • Theory: minimum 6 hours

This course will definitely take you a step further in your diver’s life. Once certified as a cavern diver you might of course consider following your training with the Intro to cave or even all the way to Full cave training.

Course prerequisites
  • Minimum age 18, 15 with parental consent
  • Open Water Scuba Diver
  • Proof of 25 logged dives
  • Daylight zone
  • Penetration is limited to 1/3 of a single diving cylinder or 1/6th if using double cylinders
  • 61 linear metres / 200 linear feet from the surface
  • 40 metres / 130 feet maximum depth
  • No decompression diving
  • No restrictions
  • Maintain a continuous guideline
  • Qualified to enroll in: Introductory Cave course
What you will learn during the Cavern diver course
  • Policy for cavern diving
  • Gas management procedures
  • Psychological considerations of cavern diving
  • Equipment considerations
  • Communication (light and hand signals, touch contact)
  • Body posture/trim
  • Buoyancy control
  • GuideLine use (deploy, follow with eyes opened and  closed)
  • Propulsion and anti-silting techniques
  • Physiology
  • Cavern environment and conservation
  • Problem solving
    • Emergency procedures (Air share, light failure…)
    • Equipment failure
    • Silting conditions
  • Accident analysis
  • Predive planning

Upon successful completion of this course, graduates may engage in Intro to Cave training

Side Mount     Intro to Tech     Intro to Cave


Cave Diving Training in the Cenotes of Mexico

Cave diving training in Cenote Minotauro

All passionate cave divers will some day travel to Mexico. And of course we did too! And we liked it so much that to fulfill our passion for Cave diving we chose to live and dive in Yucatan.

The penninsula of Yucatan hosts the longest underwater caves in the world. A lifetime would not be enough to know it all and there is much more to be discovered. We love sharing our passion and guide you in the most amazing passages in the Cenotes. And we provide high quality cave diving training with a high commitment to security and conservation. If you are a serious adventure seeker wishing to explore overhead environments, then Cave Diving Training is for you! 

Cavern and Caves are amazing, beautiful and ever fascinating places on earth. But they are very challenging environments to explore. Even more challenging is when you decide you really want to explore the underwater caverns and caves, and decide to be among the very lucky few!

 Be aware that your cave diving in Mexico might be addictive 🙂 And we’ll do our best to make that happen safely and share our passion

 Cave diving training is a 3 steps course




  • 2-3 days
  • 4 Cavern dives


  • Daylight zone
  • “Rule of thirds,” OR 1/6th with doubles
  • Max depth: 40m/130 ft
  • Penetration limited to 61m/200  ft
  • No restrictions 

The Cavern Diver training course introduces the “minimum” skills, task loading, problem solving, knowledge, and the ability to dive within the “cavern” zone. You will also get familiar with the dangers and risks involved while diving in the overhead environment. The Cavern course is in no way intended to provide instruction for Cave Diving.

  •  include gas management
  • emergency procedures
  • buoyancy 
  • trim
  • propulsion techniques 
  • line and reel use 
  • equipment management.


Intro to cave diving training



  • 2-3 days
  • 4 Cave dives


  • 1/3 of a single diving cylinder or 1/6th if using double cylinders
  • Maximum depth: 40 metres / 130 feet
Cavern + Intro to cave Diver Course combined:  4-5 days

The Intro-to-Cave Diver training course will further develop the skills and knowledge required to dive in the overhead environment. The course explains the dangers and risks involved while diving in the overhead environment and going beyond the daylight zone. Skills in the Intro to Cave course include line navigation, zero visibility training, gas management, touch contact, emergency procedures, and a higher level of prior courses skills.






  • 4 days
  • 8 Cave dives


  • 1/3 of a double cylinders or 2 single
  • Maximum depth: 40 metres / 130 feet
Cavern + Intro to cave  + Full Cave Diver Course combined: 8-10 days (16 cave dives)

The Cave Diver training course fine-tunes the skills and knowledge required to dive in the overhead environment. The course explains the dangers and risks involved while cave diving beyond the daylight zone. Skills in the Cave Diver course include passing restrictions, complex navigation, zero visibility, emergency procedures, gas management…


   Dive Razor Original  ISC Megalodon  shearwater_logo

Keywords: Riviera Maya, Playa del Carmen, Yucatan Penninsula, Cenotes, Private service, personalized service, Variety of cave dives, TDI, Technical Diving International – TDI, Razor – Go Sidemount

Deep Cave diving in the Cenotes of Yucatan, Mexico

Guided Cave Diving in Yucatan – Mexico


In Yucatan there are hundreds of cenotes accessible to certified cave divers. Some of them might be easy to find but let us take you off the beaten path.

Why a cave Guide?
STOP Prevent your death! go no farther.
– Safe cave diving:

A cave guide is up to date with the dive conditions, with a large cave diving experience and constant practice. All our cave guides live and have been safely cave diving in the Riviera Maya for many years.

– Safety again:

A cave diving guide already knows the cave, the system and can assure that it suits your level and your cave diving skills.

– Fun cave diving:

We can take you on long beautiful cave dives, that maybe would take you an entire week of cave diving to find on your  own, if you ever find it…


– Time:

A Cave guide will drive you directly to the right cenote entrance,  point you the cave entrance and guideline.

– Access to the Cenote dive site:

Going with a local cave guide could save you the time and frustration to get to the dive site and be denied the entry.

– Culture:

All our cave dive guides have a true passion for caves in general and cave diving. They all have experience in underwater cave exploration and survey.

– More Culture:

Living in the Riviera Maya all fluent in Spanish and English (at least) you learn a lot about the Mayan culture, the local fauna, the loca flora etc…



Cenote Kukulkan, cavern dive in the winter morning light


First step in the Overhead environment. You will learn all safety protocols within the daylight zone. 

Deploying a guideline


That’s it! this is the first step in the dark caves. You will learn how to do simple cave dives beyond daylight zone

Installing a jump spool in Cenote Minotauro


Caves can be very complex, especially in Mexico, we will now combine all the previously learned skills with complex navigation, and more..


Cave diving in the Cenotes North of the Riviera Maya

Cenote Chac Mool.

Visit the famous monster, the biggest submerged stalactite

Cenote Chikin Ha – Cenote X Tabay

Right next to each other these two cenotes are actually not connected yet.

Great place for cave diving training you can go back and fully enjoy the place once your get your certification. You can do the traverse to Cenote El Eden (Ponderosa).

Cenote Cristal
Cenote El Jardin del Eden

Another amazing place that you probably already know if you did your cave diving training here in the Riviera Maya. If it is your first time cave diving here in Mexico this is the place to have your first experience in diving into the halocline. A nice circuit will bring you from one side of the Open water to the other one through the famous “River Run”. A jump from this line will take you to Cenote Escondido. And if you feel like a long dive you can reach Cenote Xtabay.

Cenote Minotauro

Minotauro is an underwater cave system that you want to know!

If you remember from the greek mythology the minotaurs was a creature with the body of a man and the head of a bull who lived in a labyrinth.

This system is a labyrinth with different levels. Starting your dive from Cenote Minotauro you may reach other Cenote Estrella, Cenote Winz,  Cenote Escalera.

All passages are fairly small but are accessible with back mount. And if you are diving side mount it can be really fun to go off to the side passages even for just a short time.

Nicely decorated with brownish speleothems and light sediment you will feel very privileged to dive these somehow dusty passages. Following the Ariadne line you will feel like Theseus hunting…

Maximum depth: 50ft/15m

Cenote Buena Vista
Cenote Taj Ma Ha
Cenote Xunnan Ha
Cenote Cop 1
Cenote Nai Tux Ha


Cave diving around the Dos Ojos area

Cenote Dos Ojos
Cenote Dos Palmas
Cenote El Toh
Cenote El Pit
Cenote Tak be lum
Cenote Sac Actun – Pet Cemetary

One of the most famous dive is probably the one leading to the spectacular blue abbys, with highly decorated passages. The rest of the cave is also highly decorated.

Cenote Nohoch Na Chich
Cenote Caracol
Cenote Fenomeno
Cenote Concha
Cemnote Nariz – Otoch Ha

Cave diving in the Cenotes around Tulum Area

Cenote Calavera – Temple of Doom
Gran Cenote
Cenote Carwash – Actun Ha
Cenote Kalimba
Cenote Zacil Ha
Cenote Angelita
Laguna Kaan Luum
Cenote Dos Pisos
Cenote Naharon
Cenote Mayan Blue
Cenote Jail House
Cenote Chan Aktun Ha

Cave diving in the Cenotes in the Chemuyil area

Cenote Doggi

Side Mount configuration to access this site.

Cenote Caterpilar

In the middle of a quarry, the opening of cenote Caterpilar happened by accident.

Cenote Xulo
Cenote Mosquito factory
Cenote Chan Hole (small Hole)