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15-09-2015, 14:35
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#46
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Registered User
Join Date: Jul 2015
Location: UK
Boat: Nicholson 40 DS
Posts: 12
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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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15-09-2015, 14:55
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#47
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Registered User
Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 13,493
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by paulajayne
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.
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Refering to the subject of the post not you.
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15-09-2015, 14:57
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#48
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Registered User
Join Date: Apr 2014
Location: Jersey
Boat: Bristol 35.5
Posts: 492
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by paulajayne
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.
OR
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15-09-2015, 15:08
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#49
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Moderator
Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 18,692
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by paulajayne
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.
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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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15-09-2015, 16:04
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#50
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Registered User
Join Date: Jan 2011
Location: Lake Macquarie
Boat: Farr 1020
Posts: 484
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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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15-09-2015, 18:30
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#51
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Registered User
Join Date: Jan 2012
Location: Full time cruisers
Boat: Krogen 42
Posts: 403
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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?
__________________
----------------------------------
Terry
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15-09-2015, 18:48
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#52
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Registered User
Join Date: Apr 2014
Location: Chicago
Boat: Alden auxiliary ketch 48'
Posts: 950
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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.
__________________
Outside of a dog, a book is a man's best friend.
Inside of a dog, it's too dark to read.
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15-09-2015, 20:11
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#53
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Registered User
Join Date: Feb 2010
Location: London, Ontario
Boat: Hunter 340
Posts: 663
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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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15-09-2015, 20:43
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#54
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Moderator
Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 21,466
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
.anything but a 5 gallon bucket
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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
__________________
Jim and Ann s/v Insatiable II, lying Port Cygnet Tasmania once again.
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15-09-2015, 20:50
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#55
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Registered User
Join Date: Dec 2014
Location: New Franklin, Ohio
Boat: Homebuilt schooner 64 ft. Sold.
Posts: 1,486
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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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15-09-2015, 21:03
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#56
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Registered User
Join Date: Sep 2012
Location: Northeast, USA
Boat: Luders 36
Posts: 237
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by captlloyd
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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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.
Sent from my iPad using Cruisers Sailing Forum
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15-09-2015, 21:13
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#57
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Registered User
Join Date: Jan 2011
Location: Caribbean live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 6,635
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by zstine
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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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16-09-2015, 05:00
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#58
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Registered User
Join Date: Jan 2014
Location: Florida
Posts: 961
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by paulajayne
Not quite so simple, as holding ones breath coming up from 2 metres can rupture a lung.
Training will be required.
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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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16-09-2015, 06:53
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#59
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Registered User
Join Date: Jun 2011
Posts: 86
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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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16-09-2015, 08:16
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#60
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Registered User
Join Date: Jun 2008
Location: Tampa, FL
Posts: 5,027
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Re: Make-shift Dive rig for Bottom Cleaning
Quote:
Originally Posted by meridian28
Unless you purchase an oil free dive compressor from a reputable dive company how do you know if they are really oil free?
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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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