Cruisers Forum

Join CruisersForum Today

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-01-2014, 05:22   #16
Senior Cruiser
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 38,198
Images: 241
Re: Aluminum hull anodes

Originally Posted by thaisail View Post
I will go with zinc based on your advice...
... My boat is built in 1982 at Kanter Boat Yard in Ontario, Canada and they welded anode pads made of aluminum to the hull with threads in them and the old anodes were attached to those pads with two stainless steel bolts that hold the anodes firmly to the aluminum pads....
Kanter did it right.

For saltwater use, with an aluminum alloy hull, one should use a zinc anode.

Be aware that the zinc can oxidize over when exposed to air. This means if zincs are not cleaned when a boat has been out of the salt water, and the boat is returned to the water, the oxidized coating will protect the zinc, and it will not function as a sacrificial anode.

Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"

GordMay is offline   Reply With Quote
Old 20-01-2014, 15:02   #17
Registered User

Join Date: Jan 2012
Location: Phuket, Thailand
Boat: Ted Brewer, One off, 36' sloop
Posts: 77
Re: Aluminum hull anodes

Should the aluminum pads welded to the hull have bare aluminum under the zink anode so that the zink is in direct contact with the hull? The new zinks that I just got from Vetus had a coat of blue paint on them only on the surface where they make contact with the aluminum pads that are welded to the hull. The Vetus website recommends to have the electrical connection only through the bolts. But I have removed all the paint using a wire wheel from the aluminium pads and under the anodes so that the bare zink is held firmly against the bare aluminium hull. Should I follow the advise of Vetus and paint the bottom of the anodes and the aluminum pads?

Sent from my SGH-M919 using Cruisers Sailing Forum mobile app

thaisail is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Advertise Here

All times are GMT -7. The time now is 01:42.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.