Jon Kieren

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How Long Should My No Fly Time Last After My Dive?

As divers, you have all seen the little airplane icon on your dive computer with a countdown timer next to it. Understanding where that number comes from and how to use it to plan your trips is important to avoid missing dives, or worse, having to miss your flight back home!
August 24, 2017/by Greg Toscano

How Long Does it Take to Become a Certified Diver

Want to get certified but don't know where to start? Scuba diving is a really awesome experience when you're trained correctly. It's easy to walk into any dive shop and sign up for a class but how will you know if it's the right shop for you? What should you expect or be looking for? You've got questions and we've got answers.
June 28, 2017/by brittany hadfield
solid-foundation

How a Solid Foundation Improves Communication & Teamwork

It might sound obvious but building a solid foundation in diving is key to any and all diver's success. It keeps us safe and allows communicate effectively with our dive buddies. It's worth it to make sure your basic skills are as perfect as they can be so you can continue to advance with every new certification.
April 10, 2017/by brittany hadfield

Instructor Evaluation Slates, What Are They For?

Do you know why slates are so important in diving? Why should we even care about them? What they are for and why you should ALWAYS have one with you on every dive?
March 30, 2017/by brittany hadfield
becoming-a-dive-instructor

How long does it take to become a GREAT dive instructor?

Thinking of becoming an instructor? We're getting into what it really takes to become a GREAT instructor. It beyond the certification, being a great instructor takes time and effort.
February 28, 2017/by brittany hadfield

Don’t Get Caught in the Lines

Cave divers rely on their equipment, skills and a calm state of mind to ensure a safe exit from a cave. These three items are all interconnected and directly relate to every aspect of cave diving.
November 4, 2016/by SDI/TDI/ERDI
Sidemount-in-a-tech-world

Sidemount Diving in a Technical World

While many will argue sidemount diving is a trend or a fad, the fact is it is an extremely valuable tool for certain diving applications.
September 7, 2016/by jamescouncill
TDI-Equivalencies

TDI Equivalent Ratings with Other Scuba Diving Agencies

The goal of posting that equivalency chart was to provide a resource for divers and dive professionals to help navigate the web of diver certifications.
August 9, 2016/by jamescouncill

Are You Ready to Become a TDI Instructor Trainer?

TDI Instructor Trainers (IT) are viewed in the industry as the most knowledgeable, experienced, and talented dive educators. They are considered the top of the top or the crème of the crop.
July 6, 2016/by jamescouncill

Fear and Loathing on the Internet 20 Years Later

The article titled, “Fear and Loathing on the Internet” that inspired this blog entry was written by one of the founders of TDI, Brett Gilliam, to announce Mr. Irvine’s expulsion from TDI.
July 6, 2016/by jamescouncill
The-importance-of-course-prerequisites2

Why are Prerequisites Important in Technical Diver Training?

Prerequisites can be found in the Standards and Procedures for any course you are interested in taking.
May 10, 2016/by jamescouncill

SDI Advanced Adventure – What Does it Qualify Me to Do?

So what do you “get” out of the Advanced Adventure course other than a better idea about where you want to focus attention?
April 5, 2016/by jamescouncill

How to Deal with Divers Who Have a Bad Attitude

My student can do all of the skills but something just doesn’t seem right.
March 30, 2016/by jamescouncill

Just How Simple are Rebreathers?

Because of your responses, we felt it important to put our previous article into context.
March 9, 2016/by jamescouncill

What’s New in Technical Diving for 2016?

Each year the world of technical diving seems to progress leaps and bounds. There is always a lot to keep up with between equipment advances, exploration projects, new educational programs, physiological and scientific research studies, and more.
February 10, 2016/by jamescouncill

Divers Deserve the Truth About Rebreathers

This article explains several common myths and misconceptions surrounding rebreather diving, including: “rebreathers are complex” “A rebreather is only a tool to be used on the rare occasions when the dive is beyond the capabilities of open circuit.” And more...
January 13, 2016/by jamescouncill
sdi tdi erdi

SDI vs. TDI vs. ERDI – What’s the difference in the diving courses?

We get questioned a lot on what the difference is between SDI, TDI and ERDI courses, so we decided to put it out there where it’s easy for everyone to find when they start doing research.
November 11, 2015/by jamescouncill

The P-Valve Struggle

First things first, if you don’t know exactly what a P-valve is, it’s pretty basic. Essentially, it’s a tube that has a valve on one end that vents to the outside of your dry suit that allows liquids to pass from the inside of the suit to the outside.
 
May 12, 2015/by jamescouncill

Are You Ready for Trimix? – Students VS. Instructor Perspective

Two unique perspectives on preparing for the TDI Trimix Course.
 
April 13, 2015/by jamescouncill

Technical Diving Resources

TDI has composed a resource guide for any active technical diver, or anyone who is interested in beginning their technical diver training.
 
February 10, 2015/by jamescouncill

3 Ways to Improve Your Air Consumption

How does everyone else stay down so much longer than me? Learn these three easy ways to improve your air consumption.
 
October 15, 2014/by jamescouncill

The Secret Sauce for Surface Marker Buoy (SMB) Deployment

This article focuses on one specific aspect of deploying an SMB: methods for inflating the SMB.
 
September 10, 2014/by jamescouncill

Survivor or Statistic… Which One are You?

Knowing that we are going to have some sort of equipment malfunctions, environmental/navigation emergencies, and will just simply make mistakes at some point in our technical diving careers, how do we avoid becoming a diving fatality statistic?
 
August 13, 2014/by SDI/TDI/ERDI

3 Mistakes Most New and Veteran Divers Make

This article will discuss 3 mistakes that are common for new divers, how to avoid them, and how an experienced diver could easily end up making the same mistake..
August 4, 2014/by SDI/TDI/ERDI

6 Skills Every Technical Diver Should Master

Whether you are just starting your TDI Intro to Tech Course, or have over 200 Advanced Trimix dives, these six essential skills should be practiced on every dive.
July 15, 2014/by SDI/TDI/ERDI

Diving from #MyBuddysBoat

As divers, it’s hard to imagine a better summer day than hanging out on your buddy’s boat, doing a little diving, maybe a little fishing, and just relaxing enjoying the sunshine. When all goes well, it’s the perfect way to spend a day out of the office, but what about when it hits the fan?
July 1, 2014/by SDI/TDI/ERDI

Is Technical Diving for You?

Don’t knock it ‘til ya try it, right? Well, this also works the other way around when we’re deciding whether to pursue technical diving. Technical diving takes a specific mindset, skill level, and a substantial investment of both time and money; are you willing and able to meet these requirements? If you are unsure, there’s an option available to help you make up your mind before you fully commit yourself.
April 17, 2014/by SDI/TDI/ERDI

Choosing the Best Decompression Gas

By Jon Kieren



There are many factors that need to be considered…
March 20, 2014/by SDI/TDI/ERDI

Don’t Trust Your Gas Blender – Analyze Every Tank

by Jon Kieren



People make mistakes, it’s human nature.…
March 12, 2014/by SDI/TDI/ERDI

Diving Etiquette – don’t be “that guy” (or gal)

by Jon Kieren



There is one on every dive boat, you know……
October 8, 2013/by SDI/TDI/ERDI

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