Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 14-09-2015, 10:25   #1
Registered User

Join Date: Jul 2012
Posts: 280
Make-shift Dive rig for Bottom Cleaning

I've been holding my breath to clean the bottom and, well, the bottom doesn't stay clean that way. I've got some parts laying around and think I can make a safe mini dive bell like setup to allow easier bottom cleaning at low/no cost. I attached a schematic, but the idea is basically to take a 5 gal. bucket and sink it upside-down with my spare anchor. I would then have a line(s) cleated to the deck to keep the bucket at the proper depth, near my work area. I'd still hold my breath, but I wouldn't need to surface to get air, just go back to the bucket. I have a pump to supply air and do plan to add that for a fresh air supply.. but was wondering how many times you could take a breath off the 5 gal bucket if you were re-breathing your air, eliminating the pump. Comments, risks, other ideas?
Thanks,
Zach
Attached Thumbnails
Click image for larger version

Name:	dive rig.jpg
Views:	307
Size:	39.4 KB
ID:	109015  
__________________

__________________
zstine is offline   Reply With Quote
Old 14-09-2015, 10:35   #2
Registered User

Join Date: Sep 2015
Location: Essex, England
Boat: Hartley Tahitian 48
Posts: 284
Re: Make-shift Dive rig for Bottom Cleaning

Inhaled air circa 20% O2 - Exhaled circa 16% - so to be safe twice.
__________________

__________________
paulajayne is offline   Reply With Quote
Old 14-09-2015, 10:41   #3
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,745
Images: 9
Re: Make-shift Dive rig for Bottom Cleaning

Do you have shore power? If so you can use an oilless compressor to make a hookah system.
__________________
Fair Winds,

Charlie

Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
Charlie is offline   Reply With Quote
Old 14-09-2015, 10:49   #4
Registered User

Join Date: Jul 2012
Posts: 280
Re: Make-shift Dive rig for Bottom Cleaning

Charlie, thanks for the reply, but no shore power. This is for extended cruising at anchor.
__________________
zstine is offline   Reply With Quote
Old 14-09-2015, 10:55   #5
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,371
Re: Make-shift Dive rig for Bottom Cleaning

Waste of time. You are not far under to clean your hull, easier to just surface and get air. When you are at the aft end of the boat and your bucket is near the center or anywhere else it will be more work to use the bucket.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 14-09-2015, 10:57   #6
Registered User

Join Date: Sep 2015
Location: Essex, England
Boat: Hartley Tahitian 48
Posts: 284
Re: Make-shift Dive rig for Bottom Cleaning

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


__________________
paulajayne is offline   Reply With Quote
Old 14-09-2015, 11:08   #7
Registered User

Join Date: Jul 2012
Posts: 280
Re: Make-shift Dive rig for Bottom Cleaning

paulajayne, if I use a 5 gal collapsible air bag (water bag) or the 5 gal bucket, then the air pressure is equalized with the diver at depth. Per wiki the average man breaths 6 L/min at rest. That means I'd have 3.33 breaths in 5 gal. double that if you rebreathe the air for almost 7 breaths.... when I dive my keel holding my breath (7.3 draft), I haev only a few seconds of work time before I need to surface. having a bag with 7 breaths would really help. I just don't want to die
__________________
zstine is offline   Reply With Quote
Old 14-09-2015, 11:09   #8
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Make-shift Dive rig for Bottom Cleaning

I guarantee that after a few hurried attempts to squeeze your head in between the bucket lip and the metal bucket handle, you will realize what a waste of time this idea is.
__________________
fstbttms is offline   Reply With Quote
Old 14-09-2015, 11:13   #9
Registered User

Join Date: Jul 2012
Posts: 280
Re: Make-shift Dive rig for Bottom Cleaning

ftsbttms, what if I use a collapsible water jug like this...
Attached Thumbnails
Click image for larger version

Name:	Air-Bag temp1.jpg
Views:	213
Size:	405.5 KB
ID:	109022  
__________________
zstine is offline   Reply With Quote
Old 14-09-2015, 11:17   #10
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Make-shift Dive rig for Bottom Cleaning

Quote:
Originally Posted by zstine View Post
ftsbttms, what if I use a collapsible water jug like this...
I suspect that as you use the air inside the jug, it will collapse.
__________________
fstbttms is offline   Reply With Quote
Old 14-09-2015, 11:22   #11
Registered User

Join Date: Jul 2012
Posts: 280
Re: Make-shift Dive rig for Bottom Cleaning

I'm thinking I'd be rebreathing, so I'd exhale back into the bag. Seems reasonable that I could get a 5min dive off a 5 gal bag. Then its up to the surface to quickly exchange the CO2 laden air with fresh air and back down for another ~5min. Does that make sense?
__________________
zstine is offline   Reply With Quote
Old 14-09-2015, 11:28   #12
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Make-shift Dive rig for Bottom Cleaning

Quote:
Originally Posted by zstine View Post
I'm thinking I'd be rebreathing, so I'd exhale back into the bag. Seems reasonable that I could get a 5min dive off a 5 gal bag. Then its up to the surface to quickly exchange the CO2 laden air with fresh air and back down for another ~5min. Does that make sense?
1.- You will not be exhaling the same volume of gas back into the jug as you are inhaling out of it.

2.- Upon further reflection; I suspect that water pressure will collapse the jug as it submerges.
__________________
fstbttms is offline   Reply With Quote
Old 14-09-2015, 11:28   #13
Registered User

Join Date: Jul 2012
Posts: 280
Re: Make-shift Dive rig for Bottom Cleaning

Paulajayne.. Do you need SCUBA cert for the electric snorkel?? I'm pretty sure a hookah does require SCUBA, at least in the USA, and the electric snorkel is pretty close to a hookah. In the USA I probably need a cert just to take a breath off an air bag... I dont' know?
__________________
zstine is offline   Reply With Quote
Old 14-09-2015, 11:29   #14
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Make-shift Dive rig for Bottom Cleaning

Quote:
Originally Posted by zstine View Post
Paulajayne.. Do you need SCUBA cert for the electric snorkel?? I'm pretty sure a hookah does require SCUBA, at least in the USA, and the electric snorkel is pretty close to a hookah. In the USA I probably need a cert just to take a breath off an air bag... I dont' know?
SCUBA doesn't even require a certification. To refill tanks you need a certification, but to use the gear you do not.

There are no regulations concerning any aspect of hookah use.
__________________
fstbttms is offline   Reply With Quote
Old 14-09-2015, 11:47   #15
Registered User
 
Mark Stillwell's Avatar

Join Date: Jul 2013
Location: Missouri
Boat: Beneteau 393
Posts: 101
Re: Make-shift Dive rig for Bottom Cleaning

I do a lot of things myself. Making a breathing apparatus is not one of them. I investing in learning to dive and equipment a few years ago. The $1,500 has been a good investment.
__________________

__________________
Mark Stillwell is offline   Reply With Quote
Reply

Tags
cleaning

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale: pur 35 watermakerand hookah dive rig mcswain Classifieds Archive 5 03-10-2013 14:00
For Sale: fisher panda mini8 marine diesel generator and a hookah dive rig mcswain Classifieds Archive 5 24-07-2013 08:45
For Sale: AirLine Hookah Dive Rig Sailor-Gene Classifieds Archive 3 24-06-2011 20:06
Making a Carolina Dive Rig off-the-grid Fishing, Recreation & Fun 6 14-04-2009 12:53



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 22:39.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.