Training | Compressor Operators Course

For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

 

LECTURES – 3rd to 4th November

FILLS PRAC – 10th to the 11th November

FILLS PRAC – 17th to the 18th November

EXAM – 24th to the 25th November

Training | Nitrox Course

For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

 

LECTURES – 20th – 21st October

EXAM – 27th October

Training | CMAS Rescue Course

For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

LECTURES – 6th to 7th October

POOL / FITNESS – 13th to 14th October

DAM / EXAM – 20th – 21st October

2 Star Diving Course | CMAS

Join us for this training course! For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

 

LECTURES – 15th to 16th September

 

FITNESS/ POOL SESSION – 22nd – 23rd September

 

DAM/ EXAM – 29th to 30th September

 

 

GET TRAINED BY THE BEST!!

1 Star Diving Course CMAS | Lectures

Join us for this training course! For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

 

LECTURES – 8th to 9th Septemner

GEAR BUY – 15th to 16th September

FITNESS/ POOL SESSION – 22nd – 23rd September

DAM/ EXAM – 29th to 30th September

GET TRAINED BY THE BEST!!

3 Star Diving Course | CMAS

For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

 

 

PRE-EXAM / DIVE ASSESSMENT – 1st September to 2nd September

 

LECTURES – 8th to 9th September

 

LECTURES – 15th to 16th September

 

POOL OBSERVERS – 22nd – 23rd September

 

DAM OBSERVERS – 29th to 30th September

 

LAND/ COMPASS – 6th to 7th October

 

POOL OBSERVERS – 13th to 14th October

 

DAM OBSERVERS – 21st to 22nd October

 

COMPRESSOR LECTURES – 3rd to 4th November

 

NIGHT DIVE – 10th to 11th November

 

BOAT HANDLING – 17th to 18th November

 

HYPERBARICS – 24th to 25th November

 

END OF 2018 SCHEDULE – 2019 SCHEDULE TBA

Oxygen Administration Course

Join us for this training course! For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

.
GET TRAINED BY THE BEST!!

Basic Life Support Course

Join us for this training course! For more info on course costs, training material and timing get in touch with our training officer Robert Nortje on training@normalair.co.za

.
GET TRAINED BY THE BEST!!

Interesting Article | Don’t let your ears ruin your dives

A great article by DAN South Africa and DiveIN Magazine on the full guide to ear and diving

 

Don’t let your ears ruin your dives

You’ve just started your first dive of the day. Everything is going great! You pinch your nose and blow to equalize your ears, but nothing happens. You try again, but same issue.

Your ears starts to hurt…you try again but it’s the same.

So what now?

Accent and end the dive or push on?

No!
It’s time to learn how to equalise the right way!

According to a survey* we did, we discovered that:

  • 89% of divers doesn’t equalize the correct way
  • 29% of divers had to stay out of the water for weeks or months due to problems caused by equalizing
  • 6.3% of divers have gotten permanent ear damage due to problems with equalizing

That’s right, you might be Equalising the wrong way!

The real issue is that the way most of us was thought to equalise, and the method that usually works, is the wrong way to do it.

It’s the Valsalva Maneuver: Pinch your nostrils and blow through your nose. The resulting overpressure in your throat usually forces air up your Eustachian tubes.

How come it works if it’s the wrong way? It works perfectly fine as long as you keep the tubes open ahead of the pressure changes. However, if you do not equalize early or often enough, the pressure differential can force the soft tissues together, closing the ends of the tubes. Forcing air against these soft tissues just locks them shut.

5 Better ways to Equalize

Toynbee Maneuver – Pinch Your Nose and Swallow
With your nostrils pinched or blocked against your mask skirt, swallow. Swallowing pulls open your Eustachian tubes while the movement of your tongue, with your nose closed, compresses air against them.

Lowry Technique – Pinch Your Nose, Blow and Swallow
A combination of Valsalva and Toynbee: while closing your nostrils, blow and swallow at the same time.

Edmonds Technique – Pinch Your Nose and Blow and Push Your Jaw Forward
While tensing the soft palate (the soft tissue at the back of the roof of your mouth) and throat muscles and pushing the jaw forward and down, do a Valsalva maneuver.

Frenzel Maneuver – Pinch Your Nose and Make the Sound of the Letter “K”
Close your nostrils, and close the back of your throat as if straining to lift a weight. Then make the sound of the letter “K.” This forces the back of your tongue upward, compressing air against the openings of your Eustachian tubes.

Voluntary Tubal Opening – Tense Your Throat and Push Your Jaw Forward
Tense the muscles of the soft palate and the throat while pushing the jaw forward and down as if starting to yawn. These muscles pull the Eustachian tubes open. This requires a lot of practice, but some divers can learn to control those muscles and hold their tubes open for continuous equalization.

When to Equalize
Sooner, and more often, than you might think. Most recommend equalizing every two feet (.6 meters) of descent, but often that’s too late. At a fairly slow descent rate of 60 ft (18.288 m) per minute, that’s an equalization every two seconds. Many divers descend much faster and should be equalizing constantly.

The good news: as you go deeper, you’ll have to equalize less often!

10 Quick tips to make equalizing easier

Listen for the “pop”
Before you even board the boat, make sure that when you swallow you hear a “pop” or “click” in both ears. This tells you both Eustachian tubes are open.

Start early
Several hours before your dive, begin gently equalizing your ears every few minutes. “This has great value and is said to help reduce the chances of a block early on descent,” says Dr. Ernest S. Campbell, webmaster of “Diving Medicine Online.” “Chewing gum between dives seems to help,” adds Dr. Campbell.

Equalize at the surface
“Pre-pressurizing” at the surface helps get you past the critical first few feet of descent, where you’re often busy with dumping your BCD and clearing your mask. It may also inflate your Eustachian tubes so they are slightly bigger. The guide here is to pre-pressurize only if it seems to help you and to pressurize gently.

Descend feet first
Air tends to rise up your Eustachian tubes, and fluid-like mucus tends to drain downward. Studies have shown a Valsalva maneuver requires 50 percent more force when you’re in a head-down position than head-up.

Look up
Extending your neck tends to open your Eustachian tubes.

Use a descent line
Pulling yourself down an anchor or mooring line helps control your descent rate  more accurately. Without a line, your descent rate will probably accelerate much more than you realize. A line also helps you stop your descent quickly if you feel pressure, before barotrauma has a chance to occur.

Stay ahead
Equalize often, trying to maintain a slight positive pressure in your middle ears.

Stop if it hurts
Don’t try to push through pain. Your Eustachian tubes are probably locked shut by pressure differential, and the only result will be barotrauma. If your ears begin to hurt, ascend a few feet and try equalizing again.

Avoid tobacco and alcohol
Both tobacco smoke and alcohol irritate your mucus membranes, promoting more mucus that can block your Eustachian tubes.

Keep your mask clear
Water up your nose can irritate your mucus membranes, which then produce more of the stuff that clogs.

 

REFERENCE: https://www.divein.com/articles/diving-ears/ 

NUC CMAS Rescue Course

Book today to become a contributing member of the diving community! 

Cost: R1500.00

Course dates and format:

Lectures: 11/12 November: 09h00 – 16h00/09h00 – 12h00 (if necessary)

Pool sessions: 18/19 November: 09h00 – 12h00/09h00 – 12h00

Open Water sessions: 25/26 November: 09h00 – 12h00/09h00 – 12h00
 

Participants must have in-date Basic Life Support ( BLS ) and the Oxygen Administrator qualification.

CMAS considers this the highest level of qualification for a diver. Be equipped to assist with the management of any dive emergency, with confidence.

Become a contributing member of the diver community today by participating in this course!

For more info or to book today get in touch with Mark on training@normalair.co.za