Boat Anodes

Boat Anodes for shafts, hulls, rudders and thrusters

This category is the hub for boat anodes: shaft anodes, hull anodes, rudder anodes and bow or stern thruster anodes, in zinc, aluminium and magnesium. It is not for Volvo Penta engine or drive anodes. Empty child categories such as saildrive or propeller anodes are not used as links here, because those pages have no products yet.

How to choose the right boat anode

First decide which part of the boat the anode belongs to: the shaft, the hull, the rudder or a thruster. Then measure the old anode, or the shaft diameter, and choose the metal for the water you sail in. As a rule of thumb, zinc is widely used in salt water, aluminium in salt or brackish water, and magnesium in fresh water. Don't mix different metals on the same fitting.

How to find the right anode

Compare the shape, the bolt pattern or the shaft diameter with the listing. For a quicker route, go to Shaft Anodes or Hull Anodes. Engine and saildrive or sterndrive anodes are under Volvo Penta Anodes.

Questions about boat anodes

Should I fit zinc, aluminium or magnesium?

That depends on the water you sail in. As a rule of thumb, zinc is widely used in salt water, aluminium in salt or brackish water, and magnesium in fresh water. Don't mix different metals on the same shaft, hull or rudder. If you're unsure, tell us where you sail.

Where do I find a Volvo Penta saildrive or sterndrive anode?

Those engine and drive anodes are not in this boat-anode range. You'll find them under Volvo Penta Anodes, including ring anodes for saildrives and kits for sterndrives.

How often should I replace a boat anode?

Check anodes at least once a season, and replace one when it is about half worn away. How quickly that happens depends on the water, the metal and other metals in the water.