Tag Archives: Tech

Are you Prepared??

This is from a poster that was created by the famous Cave Explorer Sheck Exley;

Sheck Exley What If Chart....
Sheck Exley

Before the Dive, What if…;

  • The gas company put the wrong gas in the cylinders you fill from?
  • The wrong grade of helium is in them?
  • THere are impurities in the gas?
  • You miscalculate your mixtures and have too much oxygen?
  • Too little oxygen?
  • Too much Nitrogen?
  • Too much Helium?
  • The for mixing is wrong?
  • The filling temperatures are different?
  • The dive shop filling your tanks allows the gas to bleed back into their bank system?
  • Your cylinders contain flammable materials and you put in pure oxygen?
  • The dive shop tops your deep tanks with bad air?
  • A pinhole leak allows the helium to leak but other gases remain?
  • Your get the cylinders mixed up while filling?

One the Descent, What if…;

  • You do not have enough oxygen when you submerge?
  • Your depth gauge reads shallow?
  • A tank you thought had trimix was really nitrox, etc?
  • You over breath your regulator?
  • You have a delay before ascending?
  • You have a delay on the way down?
  • You have to exert a lot on the bottom?
  • You have a five minute line entanglement etc, on the bottom?
  • You lose your dive partner on the bottom?
  • You get blown from the dive site?
  • You lose your mask?

During Decompression, What if…;

  • The decompression tables you have don’t work?
  • You lose your decompression tables?
  • You lose your watch?
  • You lose your depth gauge?
  • You run out of decompression gas?
  • You drop one of your decompression cylinders?
  • Some steals on of your decompression cylinders?
  • Your decompression cylinders have leaked?
  • You are delayed at a decompression stop?
  • Danger from hazardous marine life keeps you from completing your decompression?
  • Your drysuit floods?
  • You get hypothermia?
  • You get the bends

These are all the situations one should think of when Technical Diving…and be sure you can accept the risks!! Otherwise do not do it!!

New Decompressions Diver

[singlepic id=259 w=320 h=240 mode=watermark float=left]UWE would like to congratulate Bruno P. for his successful completion of the TDI Decompressions Procedures course.   Last night Bruno and I headed out to the HMCS Chaudiere to complete his certifying dive.  Our dive plan was for 150 ft, for 25 minutes, which was a bit deeper then what we actually did for our dive.  In the end, the bottom time worked to 30 minutes with a max depth of 135ft.

As we left the bottom to our first decompression stop we had a short 14 minute obligation which was cut in half when we reached the 20 foot mark where we did our gas switch to 100 percent O2.  Over all the dive time was 57 minutes.  The visibility on the Chaudiere was about 50 foot once we hit the 90 ft mark.

Busy Week Training

[singlepic=104,320,240,watermark,left]Another busy week has passed with many different course going on. Jeremy and Bruno were completing Dive 3 + 4 of the Advanced Nitrox and Decompression Procedures course. Congratulations to Jeremy for completing his Advanced Nitrox!!! The training dives were conducted out at Tuwanek Point and then Tuwanek Island Left.

The first dive was all skills, though challenging both students did a fantastic job. The skills completed were V drills, S Drills (No mask), Donning and Doffing of cylinders with and without mask. Lift bag deployment, and then actual decompression stops…and NOTOX switches.[singlepic=102,320,240,watermark,right]

The next training dive was more of an exploration, with another S drill and full v drills. Knowing how dry skills can be…it is so important to ensure that the drills become second nature in the event there is an equipment failure.

Jeremy’s next dive is going to be a decompression dive on the HMCS CHAUDIERE. I am so looking forward to the one.

[singlepic=103,320,240,watermark,left]Interested in doing some training….there is a Wreck Course starting on Friday, the 8th of Aug…with one more seat available…or you interested in doing some Technical Dive Training….be sure to visit Suncoast Diving for more information.

Tec Training in Sechelt Inlet

[singlepic=101,320,240,watermark,left]Jeremy completed dive two of is his Advanced Nitrox and Decompressions Procedures course. We made our way to the sail boat at Tuwanek point as the start point for the dive.

The dive plan was to use 34% Nitrox in the doubles as our back gas, and then do a NOTOX gas switch to the second gas we hand in our stage bottles. That mix as 50% Nitrox, so our planned change at 50fsw, would allow us to stay there as long as the gas lasted, without any concerns for the no decompression limit.

The first level of our dive as around 97 fsw for 30 minutes…then a slow ascent to the 50 fsw level in order to make our gas switch. Once at the level we continued with our swim, and at approximately the 50 minute point in the dive Jeremy popped a lift bag for our ascent to the surface. At this point we did some share air[singlepic=98,320,240,watermark,right] drills, and gas shut down drills for practice. Overall Jeremy did an amazing job!!

Stay tuned for the story on dive 3…and if you are interested in Technical Training, be sure to contact Suncoast Diving and hurry and get signed up for our next course!

Open Water Diver Training: SDI

Cloud SpSaturday had me finishing up some open water diver training. We met at the dive shop for around 9, and got the zodiac ready, did our briefings and out we headed from Porpoise Bay Marine in Sechelt. Our boat trip was around 15 minutes as we just headed to Tuwanek Point.

This little anchorage is an excellent spot for Open Water training, as there is a beautiful sandy flat area in some 25 – 30 feet of water. The few skills we had left to complete went off without a hitch, so we were free to head out on a southerly heading and hop on the wall for a nice little wall dive!

Both students did a great job and were successful in completing their Open Water training!! Well done….be sure to stop by Suncoast Diving and see what is the schedule for up coming training.

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