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197895 RCD-2
Index B
7.5 PROTECTION AGAINST ELECTROLYSIS / EARTH PLATE
7.5.1 Anodes
General points
- The sacrificial anode protects the submerged elements of the boat against electrolysis.
- A sacrificial anode is a consumable part that protects submerged metal parts by its
dissolution (oxidation). The anodes used are made of a metal that is more readily reductive
than the metal they are protecting.
- On a new boat, all the underwater metallic components seek to reach the same electric
potential, which leads to the rapid deterioration of the anodes during the first few weeks in the
water.
- You can put several anodes on the hull.
Maintenance
- At least 2 times a year, check the corrosion on all of the anodes. Change the anode if
necessary (Before it has lost 50% of its weight).
- Use the appropriate anodes for the cruising area: magnesium anodes for fresh water; zinc
anodes for seawater.
- If the motor mountings are raised, the anodes are out of the water: in this case the anodes
can no longer protect the sterndrive: take note of the skipper's recommendations.
- When the boat is kept in a dry dock, a light deposit of dust will settle on the anodes: clean
the anodes before relaunching.
Cleaning anodes
- Use emery paper. Do not use metal brushes or steel tools to clean the boat as this may
damage the galvanic protection.
Содержание LEADER 33 OUTBOARD
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