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11-07-2022, 12:52 PM
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#41
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Guru
City: Windmill Harbour, Hilton Head Island, SC
Vessel Name: River Girl
Vessel Model: 2004 DeFever 49 RPH
Join Date: Sep 2016
Posts: 573
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Quote:
Originally Posted by Larry M
One dive company that cleans boat bottoms in our marina use a gas powered pressure washier for props, rudders and shafts. It’s a better and quicker job than doing it manually. It is a little unsettling when your inside and hear the underwater noise though. They still scrape the bottoms.
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Same here. My divers use a very large (think industrial size) 4300 psi washer with a short (2’) gun and a wobbler jet nozzle. Great for tight areas, running gear & thruster tunnels apparently. These pro salvage divers tell me they have to fin hard to stay in place, not for the faint of heart. They also try to minimize its use ‘cus it’s very hard on the paint, for which I thank them & tip accordingly.
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11-07-2022, 01:04 PM
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#42
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Newbie
City: houston
Join Date: Jan 2017
Posts: 3
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What about the cloud?
It you did a water blaster in California - huge fine!!!
No water clouding!! So no to a ablative bottom for sure!
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11-07-2022, 01:07 PM
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#43
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Member
City: St.John's
Vessel Name: Pier Presure V
Vessel Model: Integrity 496CE
Join Date: Oct 2014
Posts: 12
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There is a system we use commercially, uses cavitation to clean, it will remove loose paint. www.caviblaster.com
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11-07-2022, 02:26 PM
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#44
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Veteran Member
City: Fort Myers
Vessel Name: Pau Hana
Vessel Model: Hatteras 54
Join Date: Apr 2020
Posts: 36
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Quote:
Originally Posted by RT Firefly
Greetings,
Mr. L. I would certainly try a pressure washer and I'm sure you can get a cheap wand that can be adapted to a short profile. The ONE concern I would have is reverse thrust. Exit of water under pressure will want to push you in the opposite direction unless you can anchor yourself, somehow (stand on the seabed?, grab rope?, waterproof skyhook?).
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I had the exact same thought... Great minds?!
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11-07-2022, 08:31 PM
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#45
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Guru
City: Vancouver
Vessel Name: Ironsides
Vessel Model: 54' Bruce Roberts steel sailboat hull, coastal LRC, 220HP CAT 3306.
Join Date: Apr 2017
Posts: 1,135
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Quote:
Originally Posted by Pier Pressure
There is a system we use commercially, uses cavitation to clean, it will remove loose paint. www.caviblaster.com
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Wow, pretty cool tool. Starts at 3K.
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11-07-2022, 10:07 PM
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#46
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Senior Member
City: Guernsey, Channel islands
Vessel Name: Play d'eau
Vessel Model: Fleming 55
Join Date: Jun 2008
Posts: 356
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Quote:
Originally Posted by LeoKa
I do my hull cleaning with a hookah setup. It is not bad, but I get tired fast.
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Something to bear in mind is that when you exhale, not all your breath escapes into the atmosphere - some is left in the pipe. When you next breathe in, you will inhale some of your previous breath which will have an increased level of CO2 in it. This increases, breath by breath. Not surprised you feel tired, quickly.
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11-07-2022, 10:10 PM
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#47
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Guru
City: Vancouver
Vessel Name: Ironsides
Vessel Model: 54' Bruce Roberts steel sailboat hull, coastal LRC, 220HP CAT 3306.
Join Date: Apr 2017
Posts: 1,135
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Quote:
Originally Posted by greatpapabear
Something to bear in mind is that when you exhale, not all your breath escapes into the atmosphere - some is left in the pipe. When you next breathe in, you will inhale some of your previous breath which will have an increased level of CO2 in it. This increases, breath by breath. Not surprised you feel tired, quickly.
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I thought it was my age.
What is the solution?
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11-07-2022, 10:15 PM
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#48
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Senior Member
City: Guernsey, Channel islands
Vessel Name: Play d'eau
Vessel Model: Fleming 55
Join Date: Jun 2008
Posts: 356
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Quote:
Originally Posted by LeoKa
I thought it was my age.
What is the solution?
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Don't breathe (!), or ensure the system is able to remove all your exhaled air.
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11-07-2022, 10:16 PM
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#49
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Guru
City: Port Townsend Washington
Vessel Name: " OTTER "
Vessel Model: Ocean Alexander Europa 40
Join Date: Nov 2009
Posts: 2,378
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Quote:
Originally Posted by greatpapabear
Something to bear in mind is that when you exhale, not all your breath escapes into the atmosphere - some is left in the pipe. When you next breathe in, you will inhale some of your previous breath which will have an increased level of CO2 in it. This increases, breath by breath. Not surprised you feel tired, quickly.
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I believe your thinking about a snorkel, a hooka uses a dive regulator and the exhaust is not re breathed.
Hollywood
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11-07-2022, 11:14 PM
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#50
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Guru
City: Vancouver
Vessel Name: Ironsides
Vessel Model: 54' Bruce Roberts steel sailboat hull, coastal LRC, 220HP CAT 3306.
Join Date: Apr 2017
Posts: 1,135
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Quote:
Originally Posted by hollywood8118
I believe your thinking about a snorkel, a hooka uses a dive regulator and the exhaust is not re breathed.
Hollywood
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Correct. I have an air compressor with air filter and 100’ hose with a second stage regulator at the end. I don’t there is any re-breathing going on.
It must be my age.
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11-07-2022, 11:50 PM
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#51
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Guru
City: Gulf Islands, BC Canada
Vessel Name: Sea Sanctuary
Vessel Model: Bayliner 4588
Join Date: Jul 2019
Posts: 5,017
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yup, getting tired faster as we age. next you will start having afternoon naps.
__________________
SteveK
You only need one working engine. That is why I have two.
Sea Sanctuary-new to me 1992 Bayliner 4588
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11-08-2022, 12:15 AM
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#52
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,191
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Quote:
Originally Posted by SteveK
yup, getting tired faster as we age. next you will start having afternoon naps.
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I already have those…. Don’t tell me that I am getting old.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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11-08-2022, 02:57 AM
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#53
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Guru
City: Between Oregon and Alaska
Vessel Name: Charlie Harper
Vessel Model: Wheeler Shipyard 83'
Join Date: Jun 2016
Posts: 3,023
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Something I saw in California many years ago was a heavy plastic liner in slips for racing sailboats. A board at the end of the slip, stretching between walkways, holds the back of the liner up when docked and is weighted to sink and allow the boat to leave. Once docked the board is pulled up and the water around the boat is isolated from all other water. A half gallon of bleach is added around the boat and nothing grows. Probably illegal now.
If my private dock was in salt water, I'd do it here.
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11-08-2022, 04:06 AM
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#54
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Member
City: Grimsby
Vessel Name: Sharne Lisa
Vessel Model: 1980 Fairways trawler 38
Join Date: Dec 2017
Posts: 13
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underwater hydro blast cleaning
A few years ago, I was involved with an underwater blast cleaning operation.
They were removing a concrete coating from an undersea pipeline. Depth 60ft.
The jetting guns were very specialised so as to neutralise the jet reaction. Basically had an equal and opposite discharge tube. The back tube was about 3.5 feet long so that the diver could not injure himself. Indeed a tube broke off, and the diver removed his bicep.
As previously noted, not so much a problem if one can anchor your body securely. I think the jet reaction would be significant even with moderate operating pressures.
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11-08-2022, 08:02 AM
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#55
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Member
City: Punta Gorda
Vessel Name: Kuleana Kai
Vessel Model: Mainship 350
Join Date: Jun 2017
Posts: 18
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Have you thought about using an ultrasonic anti-fouling system like sonihuall or hullshield? Install once and never have to drive and scrape again.... will likely pay for itself in one season. The USCG uses the technology on most of their smaller vessels.
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11-08-2022, 08:04 AM
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#56
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Guru
City: south kingstown
Vessel Name: Albatross
Vessel Model: 1973 Grand Banks 36
Join Date: May 2019
Posts: 613
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Quote:
Originally Posted by kchace
I'll second RT's comment. If you're having trouble staying near the hull now, think of the thrust of a pressure washer pushing you away much more than hand pressure. You'd need a plan (something to hang on to?) to counteract that thrust.
Ken
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That was my first thought. You'd be like Rocket J Squirrel down there.
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11-08-2022, 08:29 AM
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#57
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Guru
City: Saint Petersburg
Vessel Name: Weebles
Vessel Model: 1970 Willard 36 Trawler
Join Date: Mar 2019
Posts: 7,179
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Quote:
Originally Posted by captkev
Have you thought about using an ultrasonic anti-fouling system like sonihuall or hullshield? Install once and never have to drive and scrape again.... will likely pay for itself in one season. The USCG uses the technology on most of their smaller vessels.
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I keep waiting for one of these systems to use a catamaran to demonstrate effectiveness of their product. One hull with, one without. Until then, I will put their marketing material in the same file as Algae-X magnetic fuel cleaners.
Peter
__________________
_______________________________________
Cruising our 1970 Willard 36 trawler from California to Florida
Join our Instagram page @MVWeebles to follow along
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11-08-2022, 09:08 AM
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#58
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Member
City: Punta Gorda
Vessel Name: Kuleana Kai
Vessel Model: Mainship 350
Join Date: Jun 2017
Posts: 18
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Quote:
Originally Posted by mvweebles
I keep waiting for one of these systems to use a catamaran to demonstrate effectiveness of their product. One hull with, one without. Until then, I will put their marketing material in the same file as Algae-X magnetic fuel cleaners.
Peter
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Peter,
Here you go: https://youtu.be/MRDVtVMKp3c
Kevin
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11-08-2022, 09:14 AM
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#59
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Guru
City: Vancouver
Vessel Name: Ironsides
Vessel Model: 54' Bruce Roberts steel sailboat hull, coastal LRC, 220HP CAT 3306.
Join Date: Apr 2017
Posts: 1,135
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Quote:
Originally Posted by SteveK
yup, getting tired faster as we age. next you will start having afternoon naps.
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Yep. I am already there….lol
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11-08-2022, 09:20 AM
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#60
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Guru
City: Vancouver
Vessel Name: Ironsides
Vessel Model: 54' Bruce Roberts steel sailboat hull, coastal LRC, 220HP CAT 3306.
Join Date: Apr 2017
Posts: 1,135
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Quote:
Originally Posted by captkev
Have you thought about using an ultrasonic anti-fouling system like sonihuall or hullshield? Install once and never have to drive and scrape again.... will likely pay for itself in one season. The USCG uses the technology on most of their smaller vessels.
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My hull is steel. I’ll look it up, if steel surface is a problem?
I know one boat here in the marina who has it and it works for him. He has a fiberglass boat.
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