Larger Nitrox tanks in Bonaire

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Most likely Walt at RecTec.

Incidentally, during my queries with The Habitat, they said that 15-litre (100 cu ft) steel tanks would be no problem.
That's probably it since RecTek is located inside Habitat. I was thinking it was someone in Kralendijk - just south of downtown - though.
 
I have to agree with RJP. The time spent waiting for bigger tanks to be filled will far exceed the additional time you get underwater.

Keep the dives shallow. On my last trip, 19/20 of my dives were 50' or less, with the bulk of that time shallower than 40.

I had one dive that was to the double reefs, I slung an 80 on that dive.
 
I also agree with RJP. The keys to using less air are technique, buoyancy, dropping lead, decreasing drag and going slow. Skip breathing, breath holding etc. is just going to make you retain CO2, become acidotic and if you are lucky, just end up with a headache and not loss of consciousness. Bonire is all about slow shallow diving. So what if your dives are a little shorter.
 
Buddy Dive will also provide 100's on special request if diving from boat. Was a nice option for me back in March.
 
My question.... what is SAC? Even Wikipedia was of no help seeing as I'm not a bird.
 
My question.... what is SAC? Even Wikipedia was of no help seeing as I'm not a bird.

Hi SayNo2Snow!

Surface Air Consumption Rate

Surface Air Consumption. Basically, it's the amount of air/gas that you breathe each minute on the surface. You can then use this number to predict the amount of gas that you will use at depth on any given dive or to estimate how long a tank will last.
 
Air-integrated dive computers with the capability to download dives to your computer can often provide info. that lets computer software calculate a SAC for your dive, which is handy for learning what your gas use rate tends to run, both on 'easy' dives and those with more stressful conditions.

People often use SAC when another term, RMC (Respiratory Minute Volume) is what they're referring to. As UNCFMP mentioned, SAC is your gas consumption at the surface. You can calculate this by sitting at your computer wearing your scuba mask and breathing off your reg. for a set time (say, 15 to 20 minutes), seeing how many PSI your tank pressure dropped & what volume of gas you used up, then adjusting for a 'per hour' rating.

RMC is actual gas consumption rate on a dive, and factors in issues like depth (faster use at greater depth), conditions (e.g.: swimming into current vs. drift diving), gear (e.g.: dry suit with a of lead, vs. t-shirt & trunks in the tropics) and so forth.

So your dive computer may give you a 'SAC' for your dive, which is actually the Respiratory Minute Volume.

Hope I explained all that without bungling it. Learning about it in the SDI Solo course last year.

Richard.
 
Hi uncfnp! ... and thank you both for the explanation however I think I will just watch my gauges and sing Jimmy Buffett songs in my head, this is way too much thinking for my brain :confused: particularly when I'm supposed to be on vacation! To think I've been learning about gas today... me thinks I'll make burritos for supper tomorrow...:rofl3:


Cheers!
Ann
 
Bill, I am a big guy as well, when I first started diving my SAC was terrible but a lot of it had to do with diving with a group and being the first one out of air ( also being a new diver, but not so much). If I dove with just me and my buddy, there was very little pressure and I was not nervous about it. My first trip to Bon was a revelation..I was relaxed and not concerned about ruining other peoples dives and my bottom time improved immensely! I almost doubled my bottom time when the nerves were no longer a factor..
 

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