GENERAL CARE AND MAINTENANCE
SECTION
10
© 2003-2018 Ken Cook Co.
10 - 6
l Bass
A boat’s electrical system is designed to protect you from
electrocution, short circuits and overloads. Have a qualified electrician perform any
modifications to the system such as adding electrical accessories. Some installed
accessories, such as stereos, have an additional fuse located in-line with the
positive lead. Other accessories may use in-line fuses near the battery.
GALVANIC CORROSION
Galvanic corrosion (electrolysis) is the deterioration of metals from the effects of
electrolytic action. When two dissimilar metals are immersed in a conductive fluid
such as salt water, an electric current is produced, much like a battery. As current
flows between the two metals, the softer, or sacrificial, metal deteriorates.
If you operate in salt, polluted or brackish waters, the boat should be equipped with
a transom-mounted sacrificial anode to prevent corrosion damage to other metal
parts of your boat that are in contact with the water. The anodes are self-sacrificing
and are slowly eroded by electrolytic action. These anodes are important and
require periodic inspection for deterioration. Replace the anode when it is less than
50% of its original size.
Most engines are equipped with one or more anodes that require periodic
inspection. See the Engine Operator’s Manual for maintenance procedures.
Electronic cathode systems are designed to reduce the effects of electrolysis.
Electronic cathode systems emit an electrical low-current charge into the water
near the metal components’ neutralizing electrolytic action.
Do not paint or coat sacrificial anodes or cathodes with
any substance. Once covered, they do not provide protection from galvanic
corrosion. Replace anodes if they have deteriorated 50% or more.
SALTWATER CORROSION
Rinse the boat hull and deck with fresh water and wash immediately after using the
boat in salt water. If the boat is used primarily in salt water, wax the hull monthly
and apply corrosion inhibitor to all hardware. See the Engine Operator’s Manual for
the flushing procedure.
Flushing the freshwater engine cooling system is recommended when the engine
has been used in salt, polluted or brackish waters. Flush the entire engine cooling
system with fresh water for at least 5 minutes after use in these waters. Consult the
boat dealer for suitable flushing equipment.
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