Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 02-10-2015, 20:14   #1
Registered User

Join Date: Oct 2014
Posts: 21
Zinc, Anodes, & Electrolysis….Huh? :)

Hey All!
I'm still chugging away here on land - but hoping, please!, to make the move next year and quasi-retire and live aboard.

Finally settled on catamarans - Love the monos…especially some of that gorgeous, sweet looking joinery…but, alas…pretty sure it will be a cat

All this research has been great, and found answer to everything but I'm still stumped on zincs, anodes, & electrolysis. Why, when, where, and how much?

When I was in the Navy, stationed at Subase Bangor, WA, I remember the boomers had to go through the "degausser" - to demagnetize the hull - is that relevant to all this? Just curious about that one

Again, tons of information on this, but I can't find any in "English", it all seems to be written in "Engineer", so if anyone has a good link to share, or if this is not as complicated as it seems to be to me and it can be explained here - as if I were a not so bright 5 year old? - I would appreciate any guidance!

Thank you all and be well!
Rob
__________________

__________________
Trident50 is offline   Reply With Quote
Old 02-10-2015, 21:45   #2
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: Zinc, Anodes, & Electrolysis….Huh? :)

Took me about 2 seconds on Google-

BoatUS – BoatTech – Sacrificial Zincs by Don Casey
__________________

__________________
fstbttms is offline   Reply With Quote
Old 02-10-2015, 22:02   #3
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,334
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by Trident50 View Post
………….
When I was in the Navy, stationed at Subase Bangor, WA, I remember the boomers had to go through the "degausser" - to demagnetize the hull - is that relevant to all this? Just curious about that one
………..
Rob
Totally irrelevant
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 02-10-2015, 22:08   #4
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,334
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by Trident50 View Post
…...

Again, tons of information on this, but I can't find any in "English", it all seems to be written in "Engineer", so if anyone has a good link to share, or if this is not as complicated as it seems to be to me and it can be explained here - as if I were a not so bright 5 year old? - I would appreciate any guidance!

Thank you all and be well!
Rob
While fstbttms's link is a good one, it may be too much for a 5 year old.

For the 5 year old, zinc and anode is the same word (but for the engineer and the rest of us it isn't ).

They are stuck (bolted) onto the underwater metal parts of the boat to prevent the metal from rusting and disappearing (again a 5 year old explanation )
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 03-10-2015, 00:07   #5
Registered User

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 1,376
Images: 7
Re: Zinc, Anodes, & Electrolysis….Huh? :)

If you can get hold of a copy of Boatowner's Illustrated Handbook Of Wiring by Charlie Wing ISBN 0-87742-383-0 it gives a good description of what is involved and contains a lot of other good information about boat electrics.
__________________
RaymondR is offline   Reply With Quote
Old 03-10-2015, 08:56   #6
Registered User

Join Date: Nov 2013
Location: Homeport: Oswego, NY
Boat: 1993 Sabre 362 #113
Posts: 351
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Another good source of information and anodes is
BoatZincs.com Frequently Asked Questions

Also, consider using Aluminum anodes instead of zincs. Aluminum will work in fresh, brackish, and saltwater and is somewhat more environmentally friendly than zinc according to a recent article in Professional Boatbuilder.
__________________
Dave Lochner is offline   Reply With Quote
Old 03-10-2015, 10:36   #7
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: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by Dave Lochner View Post
...consider using Aluminum anodes instead of zincs. Aluminum will work in fresh, brackish, and saltwater...
Aluminum anodes should not be used in freshwater. Magnesium for that.

__________________
fstbttms is offline   Reply With Quote
Old 03-10-2015, 10:50   #8
Registered User

Join Date: Nov 2013
Location: Homeport: Oswego, NY
Boat: 1993 Sabre 362 #113
Posts: 351
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by fstbttms View Post
Aluminum anodes should not be used in freshwater. Magnesium for that.

Check this chart http://www.boatzincs.com/pdfs/Chart_...ould_I_Use.pdf

Aluminum is acceptable for freshwater.
__________________
Dave Lochner is offline   Reply With Quote
Old 03-10-2015, 10:57   #9
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: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by Dave Lochner View Post
Check this chart http://www.boatzincs.com/pdfs/Chart_...ould_I_Use.pdf

Aluminum is acceptable for freshwater.
The graphic I posted came from the anode manufacturer, Canada Metals. And while I use BoatZincs.com from time to time, I personally would take the manufacturer's word on this over an online zinc store.
__________________
fstbttms is offline   Reply With Quote
Old 03-10-2015, 11:25   #10
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 1,708
Re: Zinc, Anodes, & Electrolysis….Huh? :)

The degaussing you witnessed is to help the sub avoid being tracked and for avoiding magnetic mines and torpedoes. It has nothing to do with the hull and engine zincs.
__________________
Lepke is offline   Reply With Quote
Old 03-10-2015, 12:51   #11
Registered User
 
buzzstar's Avatar

Join Date: Apr 2012
Location: ashore in So Calif.
Boat: No more boat (my medical, not the boat's)
Posts: 1,271
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Seems to me that if the sacrificial anode is to do its job, that is be the sacrificial whipping boy for more expensive and difficult to replace metal parts (usually of a vessel), then zincs are usually, if not always better than the other choices in salt water. Sure aluminium may be more environmentally friendly than zinc (I strongly suspect any environmental impact by either is very minor) but the increased electrolysis affecting the metals intended to be protected may be far more harmful to the environment and the vessel, not to mention the wallet of the owner. I know far less about "fresh" water as an electrolyte than the salty oceans. I would not be surprised to find that those unleashed stray electrons that cause much of the need for protection are all too often (this is not the same as "always") produced by those concerned about the environment as it relates to the control of persons other than themselves.
__________________
buzzstar is offline   Reply With Quote
Old 03-10-2015, 13:36   #12
Registered User

Join Date: Aug 2012
Posts: 811
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by Trident50 View Post
Hey All!
I'm still chugging away here on land - but hoping, please!, to make the move next year and quasi-retire and live aboard.

Finally settled on catamarans - Love the monos…especially some of that gorgeous, sweet looking joinery…but, alas…pretty sure it will be a cat

All this research has been great, and found answer to everything but I'm still stumped on zincs, anodes, & electrolysis. Why, when, where, and how much?

When I was in the Navy, stationed at Subase Bangor, WA, I remember the boomers had to go through the "degausser" - to demagnetize the hull - is that relevant to all this? Just curious about that one

Again, tons of information on this, but I can't find any in "English", it all seems to be written in "Engineer", so if anyone has a good link to share, or if this is not as complicated as it seems to be to me and it can be explained here - as if I were a not so bright 5 year old? - I would appreciate any guidance!

Thank you all and be well!
Rob
Degaussing is to demagnetise a steel ship. As I understand a steel ship can become magnetised over time. I believe they have an electrical coil in the seabed that does the work. I'm not sure what happens to any magnetic compasses on board.
That won't be necessary for any multihull you might acquire unless it's made of steel an is armed.
Anodes are used to help prevent corrosion on metal parts of a vessel. For example propellor, saildrive leg etc. The zinc of an anode corrodes instead of the propellor. You can google that. A saildrive will be fitted with a zinc (sometimes Aluminum,) it's normally in front of the propellor. A shaft drive will or should be fitted with a zinc clamped around the shaft.
Good luck with your potential catamaran. I would like to go that way if I were replacing my monohull. A problem for me would be more expensive berthing.
I like both so I'll stick with what I have until I win the lottery.
__________________
GrahamHO is offline   Reply With Quote
Old 03-10-2015, 15:33   #13
Registered User

Join Date: Aug 2012
Posts: 811
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by fstbttms View Post
Aluminum anodes should not be used in freshwater. Magnesium for that.

In the last couple of years the genuine part anode for my Yanmar sail drive has been changed from a one piece zinc that required propellor removal to a 2 part aluminum anode easily changed. It's not labeled for salt water only as far as I'm aware. Maybe salt water use was assumed due to my location.
__________________
GrahamHO is offline   Reply With Quote
Old 04-10-2015, 01:09   #14
Registered User

Join Date: Sep 2015
Boat: 1972 VENTURE-22
Posts: 10
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Quote:
Originally Posted by Trident50 View Post
Hey All!
I'm still chugging away here on land - but hoping, please!, to make the move next year and quasi-retire and live aboard.

Finally settled on catamarans - Love the monos…especially some of that gorgeous, sweet looking joinery…but, alas…pretty sure it will be a cat

All this research has been great, and found answer to everything but I'm still stumped on zincs, anodes, & electrolysis. Why, when, where, and how much?

When I was in the Navy, stationed at Subase Bangor, WA, I remember the boomers had to go through the "degausser" - to demagnetize the hull - is that relevant to all this? Just curious about that one

Again, tons of information on this, but I can't find any in "English", it all seems to be written in "Engineer", so if anyone has a good link to share, or if this is not as complicated as it seems to be to me and it can be explained here - as if I were a not so bright 5 year old? - I would appreciate any guidance!

Thank you all and be well!
Rob

Hello from a fellow 'Bubble head" "DBF" 3 boats. I found the people at West Marine to be helpfull. I have been working and making mod on a V-22 Hope to launch "Ahoogha Times 3" in may 16.
__________________
Ahoogha 3 times is offline   Reply With Quote
Old 04-10-2015, 07:02   #15
Registered User

Join Date: Aug 2015
Location: Middle TN
Boat: Ericson MKIII 35'
Posts: 74
Re: Zinc, Anodes, & Electrolysis….Huh? :)

Soooo, if a person were to sail freshwater AND saltwater should they have more than one?
__________________

__________________
Freemind is offline   Reply With Quote
Reply

Tags
electrolysis

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
Removing Zinc Anodes. SabreKai Construction, Maintenance & Refit 5 30-03-2013 00:58
Zinc Anodes in Exhaust Elbow timj Engines and Propulsion Systems 4 26-09-2011 14:42
Zinc Anodes Being 'Eaten' by Neighbour? Solitude Construction, Maintenance & Refit 1 30-09-2009 17:56
Perkins 4236 zinc anodes tomrobalo1 Engines and Propulsion Systems 2 13-11-2008 13:40
Yanmar 2qm15 zinc anodes Jack Long Engines and Propulsion Systems 2 01-10-2008 06:52



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:09.


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.