Uwe and the Sunshine Coast Dive Club went out for the first night dive of 2009. Uwe and Red Hat Divers have been working together to create an Underwater Video of the various dive sites here in the Sechelt Inlet.
The dive went very well, we had an encounter with what I think was a Red Octopus, a Pipe Fish, as well we had a great run in with a Red Hairy Crab, and what looked like flatworms.
[singlepic id=222 w=320 h=240 mode=watermark float=left]Uwe is excited to announce that Paul has successfully completed his PADI Wreck course. Paul too his time completing the course by splitting the 4 training dives up over two months.
Dive One and Two were conducted back in early December. Our day out on the inlet for the first dives was pretty cold and rough. The wind and sea was up, and made for a very challenging day of diving, but Paul was up to the challenge and did an excellent job.
His last two dives were conducted on Sunday, and even though the fog was pretty heavy, we carefully made our way up the inlet in what at times was zero and zero visibility. Thankfully by the time we made our way to the Chaudiere the sun was out, and the fog burned off. The water temperature is down to 40 on the the surface and 48 at depth. Visibility was excellent….and Paul did an excellent job on his last two dives!! Well done Paul!
I have been reading an interesting manual from IANTD and I could not get over how much this makes sense, so I thought I would share it with my readers!
Analyze all gases prior to diving;
Ensure all gases are properly and visibly labeled prior to diving;
Use 1.4 PPO2 on technical level exposures as a bottom and 1.6 as a maximum decompression mix PPO2[singlepic id=221 w=320 h=240 mode=watermark float=right]
After a period of acitvity at the surface (kitting up), allow for a short rest period in order to get breathing and heart rate back under control prior to entering water. Experienced divers may use visualization techniques or bodycardial breathing to achieve this. In short, wtop whatever you are doing and breathe deeply for a period of time;
During the descent, stop at 20ft (6msw). Perform a leak and general equipment check. THis wait time of an additional minute or so further allows the body to acclimate to the new environment. Temperature and light acclimatization may take several minutes (up to 25 minutes for major light changes), however this brief stop will allow the cardio-vascular system to return to near normal rates.
Make a slow descent without excess exercise. Either free fall or use hand over hand techniques with shot lines in tidal areas. Finning down the line will use a lot of energy and produce CO2 that in turn predisposes us to narcosis and a range of other problems.
Having reached the bottom take another brief period to adjust equipment and attain the correct buoyancy. All these extra stabilizing minutes are simply an attempt to return the body to a near surface functioning state such that it operates to maximum efficiency.[singlepic id=136 w=320 h=240 mode=watermark float=right]
During the dive, whenever possible use “pull and glide” techniques rather then heavy finning (with suitable respect for the environment). Use of the arms reduce breathing stress.
If at any point during the dive a stressful situation arises, STOP, take 3 deep breaths (focus on breathing out), Think and Act in that order. Try and prioritize the problems. The bottom line being if I have gas I can breathe. There is no urgency to start an ascent if at the end of the planned time something happens which slows egress providing bailout schedules are (and should be) carried.
If the depth of the dive is known, carry a schedule for the dive time and the dive time plus 5 minutes. If the depth is uncertain carry a schedule for the depth and the time and the depth plus at least 10ft (3m) and the same time. Carry an additional schedule for the longest time and deepest depth assuming a decompression on bottom mix.
Always plan for the deepest part of the dive even if this portion is only a bounce, i.e. if the wreck bottoms at 229fsw (70 msw), but most of the dive is at 223fsw (68 msw), plan for 229 fsw (70 msw). Maintain ascent rates of 33ft/minute (10 m/minute) or less, even from deep water.
As with a no-stop dive where it is wise not to return directly to the surface (as this is a calculated pressure ceiling), it is also wise not to return directly to the first decompression stop. One or two minutes spent waiting 10fsw (3msw) below the first stop are beneficial when considering tissue over pressurization and will have no noticeable affect on the remaining decompression.
Avoid unnecessary deplays in deep water on bottom mix, such as starting up a wall after planned bottom time and then taking time to stop and look.
Do not reduce stop times arbitrarily. Do not make assumptions on stop time reduction if using a non planned gas without first computing for the effects. In a team plan this would mean carry a schedule for the worst gas scenario of the team (most deco).
When reaching the first stop and if using a time device which works in whole minutes. Wait until the minute has incremented and then start the timing at that stop.[singlepic id=138 w=320 h=240 mode=watermark float=right]
If the stop involves a gas switch, start the stop timing after at least 3 – 4 breaths using the gas.
Maintain stop accurracy to +/- 1fsw (.5 msw)
After completing the final stop, ascend half way to the surface and stop for a further 2 – 5 minutes.
While waiting for the boat to pick you up, stay on the highest available FO2
Upon entry into the boat after a period of decompression, spend at least 5 minutes breathing your highest available FO2 on the surface.
Hydrate with non-acidic drinks at least 12 hours before planned extended decompression dive. Hydrate again prior to the dive and immediately afterwards
Avoid alcholic beverages, caffine and decongestants prior to diving.
Do not smoke, especially immediately before and after a dive.
These points are pretty much common sense things, but how many people skip past some, out of complancy??
UWE would like to congratulate Tania O. and Duncan T. for their successful completion of the PADI Drysuit Course. Not only did they brave the cool waters of BC, but they decided to head out on the zodiac and do these dives in the snow! Well done to both students!!
[singlepic id=216 w=320 h=240 mode=watermark float=right]Not so new to the Sunshine Coast is the snow, but in this case, I have to admit it has been hanging around for some time now. UWE planned an awesome charter to the HMCS CHAUDIERE back on the 19th of Dec, but we ran into a problem, when the throttle control froze and we were not able to get anywhere.
The 28th of Dec, was a busy day….we still had snow on the ground. Duncan and Tania came out and did their drysuit course, and thankfully the throttle thawed out and away we went.
Dive One had us out to Pipers Point, to complete the few skills that we had to do, and off onto the wall we went. Surface water conditions were calm and flat, with a temperature in and around 43F, with huge huge clear visibility! We spent 30 minutes or so out on the wall, things were beautiful as is always the case while we are out in the inlet. Both students did an awesome job with all their skills.
[singlepic id=218 w=320 h=240 mode=watermark float=left]Dive Two, had us head over to Tuwanek Pt, where we planned to jump in on the sailboat wreck, and do the couple of skills that was needed to complete the drysuit course. Do to some equipment problems, we had to split the dives up, so I took Duncan, and completed his drysuit skills, then returned to the boat, and picked Tania up after a quick regulator exchange…and off we went to get her qualified as a drysuit diver!
Overall a great day out diving…interested in winter diving…want your drysuit qualification….then stop by and visit Suncoast Diving.
[singlepic id=215 w=320 h=240 mode=watermark float=right]I just purchased the new UK Sun Ray LED light, from Suncoast Diving in Sechelt, and WOW what a light. I used to have UK Light Cannon and this new Sun Ray has just about TWICE the power along with a low and high switch which I found to be very effective, especially during night dives.
The other thing that I like about Sun Ray is that I dropped it on the floor and it was just fine, not like Light Cannon, if you dropped it then it may or may not work again.
In my humble opinion this is the BEST light that UK has brought out and it comes complete with a rechargeable battery so no more buying batteries all the time.