Great videos! Lots of Brackish water where I live. Speaking with the experts at an anode manufacturer, zinc anodes aren't really appropriate in brackish water. They will quickly passivate with a layer of zinc oxide and stop protecting the running gear. Aluminum anodes will continue spalling off and protecting in brackish water and are also fine in salt water.
Great video again with lots of very useful info!
Harry
Interesting info about the anodes! thanks again!
Great videos! Lots of Brackish water where I live. Speaking with the experts at an anode manufacturer, zinc anodes aren't really appropriate in brackish water. They will quickly passivate with a layer of zinc oxide and stop protecting the running gear. Aluminum anodes will continue spalling off and protecting in brackish water and are also fine in salt water.
I've written in pbo and ym for years to stop using zinc but some manufacturers don't supply them for some applications including sail drives!
In terms of sacrificial anodes, does it make sense in such case have both zinc and aluminium anodes installed on the same boat, just in case?
No in most cases just use aluminium for both salt and brackish waters these days. Much better for the environment and your pocket