HAMILTON LONG ANODE

Function and technical context

The sacrificial anode for Hamilton long format thrusters is an essential component of the cathodic protection system on vessels equipped with Hamilton jet thrusters. Its mission is to protect submerged metal parts—propellant casing, impellers, axles and aluminum or steel structures—from galvanic corrosion produced by the electrochemical interaction between different metals in contact with water. Being a less noble metal (usually zinc or aluminum), the anode corrodes in a controlled manner instead of the critical structural parts of the propellant, acting as a sacrificial shield. Without adequate cathodic protection, the internal components of the Hamilton jet can suffer pitting, accelerated erosion and premature structural failure that compromises the maneuverability and safety of the vessel.

When to replace this part?

Sacrificial anodes should be inspected at the beginning and end of each sailing season, and replaced when they have lost between 50% and 60% of their mass, since below that level they no longer offer effective protection. In boats that frequently sail in salty or brackish waters, wear can be significantly faster, so it is advisable to check the condition of the Hamilton Larga TEN02520 anode also at each intermediate stranding. Preventatively replacing the anode at the beginning of each season is the best practice to avoid galvanic corrosion damage to expensive jet drive components.