HAMILTON ANODE SHORT

Function and technical context

The Hamilton Corta sacrificial anode (ref. TEN02521) is an essential component of the cathodic protection system of vessels equipped with Hamilton-type thrusters and water jets. Its mission is to protect the submerged metal parts—jet casing, rotor, shaft and other structural components of the propulsion unit—against galvanic corrosion that occurs when different metals coexist in contact with salt or brackish water. Being a metal with a lower electrochemical potential (usually zinc or aluminum), the anode acts as a preferred consumable element: it oxidizes itself so that the noble parts of the propellant remain intact. Without adequate cathodic protection, corrosion can irreversibly damage high-cost components such as the rotor or waterjet housing, compromising both the propulsive performance and structural integrity of the unit.

When to replace this part?

A sacrificial anode should be inspected at the beginning of each season and replaced as soon as it has lost approximately half its mass, has a soft or porous texture, or shows signs of advanced white corrosion indicating depletion of the active material. As a general guideline, anodes on boats frequently used in salt water usually require replacement once a season or even more frequently in areas of high salinity or strong galvanic currents. Replacing the anode preventively, without waiting for it to be completely consumed, is the most economical measure to avoid costly damage to the Hamilton propellant and prolong the useful life of the assembly.

Compatibility table