11.9 SACRIFICIAL ANODES

The submerged metallic parts of the yacht are protected against galvanic corrosions by means of anodes. Check for their wear very frequently, as it depends also (and highly) on environmental factors like sea chains nearby, metal posts or shores, metal hulls moored nearby, electric devices, etc.. The replacement is necessary when the wear exceeds 50%.

The cathodic protection test can be performed on the monitoring system to check the state of the sacrificial anodes.
A reference anode (to be checked periodically) is installed on board, against which the system measures the electrical potential difference and checks if it falls within the correct protection range. An an alarm signal is triggered in case of readings outside the safe range.

CAUTION

Each time the yacht is lifted, check for the condition of the propeller, of the protection anodes and of the fastening system.
Replace the anode frequently.