Vetus ZINK15C zinc anode
Cathodic protection by means of anodes is a must for the protection of all metal parts under water. Therefore, not only for steel boats, but also for wooden, fibreglass and aluminium hulls, anodes are required. The Material of the Vetus zinc anodes is of the highest possible standard, the U.S mil. -A-18001 K. specifications. Anodes which do not meet these specifications have hardly any effect or no effect at all. Vetus Aluminium anodes consist of an aluminium-indium-zinc alloy Mil - A - 24779 (SH). All Vetus anodes are streamlined and mounted either with specially made studs, which can be welded to a steel hull, or special through-hull bolts for fibreglass and wooden boats.
When to apply Zinc anodes and when the Aluminium Models?
For vessels, which mostly cruise on inland (fresh) waters, we recommend aluminium anodes, since aluminium has a greater differance of potential with other metals than zinc. This is very important, as fresh water provides a hight electrical resistance than salt water. For sailing on salt water or brackish water, we recommend the use of zinc anodes. Aluminium anodes also function well in salt water but are sacrificed at a much higher rate.