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Old 15-09-2015, 14:35   #46
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Thumbs up Re: Make-shift Dive rig for Bottom Cleaning

Sorry - my response was written before I saw the posts by 1oldbuzzard and Crazyoldboatguy. They talk sense. Listen to them.
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Old 15-09-2015, 14:55   #47
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Re: Make-shift Dive rig for Bottom Cleaning

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Originally Posted by paulajayne View Post
I am BSAC 1st class and SADS which is a British military Services air diving supervisor and have done 2500 plus dives and I never assume anything where diving is concerned.
Refering to the subject of the post not you.
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Old 15-09-2015, 14:57   #48
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Re: Make-shift Dive rig for Bottom Cleaning

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A floating snorkel can work down to about 1 metre depth - deeper than that and your lungs cannot pull the air in. Dead air in the tube will be a problem so two tubes - inlet and outlet will be best - fitted with a non return valve in the inlet side.

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Old 15-09-2015, 15:08   #49
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Re: Make-shift Dive rig for Bottom Cleaning

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Originally Posted by paulajayne View Post
I am BSAC 1st class and SADS which is a British military Services air diving supervisor and have done 2500 plus dives and I never assume anything where diving is concerned.
Not least those sneaky joint services staff disconnecting kill switches and unfastening ropes on the Subaqua Diving Supervisor(SADs) courses, an interesting game which keeps students on their toes

Pete (SADs 1099)
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Old 15-09-2015, 16:04   #50
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Re: Make-shift Dive rig for Bottom Cleaning

Just a warning, the issue of an "Oil Free" compressor is raised above and this is critical. Do not, under any circumstances attempt to use a normal compressor. Dive compressors are oil free to avoid the toxic effects of oil in the air.
Hookah compressors are available 12 volt, even with a floatation ring so you can tow them around. Just remember to breath out as you surface.
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Old 15-09-2015, 18:30   #51
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Re: Make-shift Dive rig for Bottom Cleaning

Unless you purchase an oil free dive compressor from a reputable dive company how do you know if they are really oil free? You can buy inexpensive ones at Lowes, Home Depot or even Harbor Freight. What is the minimum size compressor needed?
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Old 15-09-2015, 18:48   #52
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Re: Make-shift Dive rig for Bottom Cleaning

Some of the hookah companies I have reviewed basically use off the shelf oilless compressors - they don't actually build these things, they bundle off the shelf components into a package, add a cute young lady with great cleavage on their home page and make a profit.

Not hard to find an oilless compressor on the market. You can tell they are oilless because you don't have to put oil into them.
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Old 15-09-2015, 20:11   #53
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Re: Make-shift Dive rig for Bottom Cleaning

This posting about breathing air from a 5 gal. bucket is the nuttiest, dumbest idea I have ever heard of. I'm surprised to see it on here given the normally high quality of questions raised!
Hire someone to clean the hull, go buy a hookah unit, get certified for SCUBA...anything but a 5 gallon bucket.
Just my thoughts as a former north sea sat diver.
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Old 15-09-2015, 20:43   #54
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Re: Make-shift Dive rig for Bottom Cleaning

Quote:
.anything but a 5 gallon bucket
ANYTHING??? Ok, I know: a TEN gallon bucket!

Seriously, I agree completely with your analysis of this post, but I lack the authority of being a professional diver.

Jim
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Old 15-09-2015, 20:50   #55
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Re: Make-shift Dive rig for Bottom Cleaning

I would pay good money to just watch someone try to sink a 5 gallon bucket upside-down and keep the air in. Much easier said than done, even in calm water. Where can I buy my ticket? (that rope around the waist idea is good advice.)
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Old 15-09-2015, 21:03   #56
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Re: Make-shift Dive rig for Bottom Cleaning

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Originally Posted by captlloyd View Post
I would pay good money to just watch someone try to sink a 5 gallon bucket upside-down and keep the air in. Much easier said than done, even in calm water. Where can I buy my ticket? (that rope around the waist idea is good advice.)

I was also the thinking that the measure from most people's noses to their shoulders is not much more 4-6" maybe less. So to get your nose into that pocket of air, the bucket would need to be almost perfectly filled. If you are wearing a mask, it would have to even more perfect to get your mouth in it.


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Old 15-09-2015, 21:13   #57
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Re: Make-shift Dive rig for Bottom Cleaning

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Charlie, thanks for the reply, but no shore power. This is for extended cruising at anchor.
Brownie makes a DC diving hookah. These are not cheap but suitable for hull cleaning. We invested in a gas powered unit for reef diving as well. There are many how-to plans explained on YouTube.
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Old 16-09-2015, 05:00   #58
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Re: Make-shift Dive rig for Bottom Cleaning

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Not quite so simple, as holding ones breath coming up from 2 metres can rupture a lung.

Training will be required.
PADI Advanced Open Water certified for almost 40 years
And I still remember the number one rule is that you have to Breathe
Holding your breath will kill you for sure via pulmonary embolism.
1 foot per minute up and down and never ascend faster than your bubbles
Has worked for me 40 years and over 500 dives
There would be NO WAY I'd stick my head into a bucket under water
Even if I was kitted out with full Scuba gear
Just a stupid idea to me
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Old 16-09-2015, 06:53   #59
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Re: Make-shift Dive rig for Bottom Cleaning

When I come to the surface after holding my breath and scrubbing the boat bottom, I am breathing very hard. It's not one breath and back down again. A five gallon upside down bucket would be useless to me.
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Old 16-09-2015, 08:16   #60
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Re: Make-shift Dive rig for Bottom Cleaning

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Originally Posted by meridian28 View Post
Unless you purchase an oil free dive compressor from a reputable dive company how do you know if they are really oil free?
It will say so. For example, look at the page linked below from the Harbor Freight website. You will notice that several of the compressors are listed as "oil lube" and several are listed as "oilless."

Air Compressors and Air Compressor Accessories €“ Harbor Freight

Click on the link for one of those that does not specify on the above page, and in the details of the compressor it will almost always be specified there.
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