NOTE: DAMAGE DUE TO CORROSION IS NOT COVERED
UNDER WARRANTY!
Galvanic Corrosion
Galvanic corrosion (electrolysis) to the boat is the decomposition of metal due to the
eects of electrolytic action. When two (2) dissimilar metals are immersed in a conductive
fluid (e.g., salt water), an electric current is produced, much like the action of a battery. As
the current flows, it takes with it tiny bits of the softer metal. If left unchecked, severe dam-
age may occur over time.
If the boat is operated in salt, polluted or brackish waters, even temporarily, the boat
should be equipped with a transom-mounted zinc anode to prevent damage to those
metal parts coming in contact with the water.
The zinc is, by design, self-sacrificing. It is slowly eroded away by electrolytic action
and requires periodic inspection for deterioration. When the zinc has eroded to approxi-
mately one-half (1/2) of its original size, it must be replaced to continue protection, or
damage to other metal parts may result.
MasterCraft Saltwater Series boats come equipped with the zinc anode. For fresh
water boats that may be operated in polluted or brackish water, an authorized Master-
Craft dealer can provide guidance in securing and installing a zinc anode for protection.
2013 MasterCraft Owners Manual • Care and Maintenance • Page 5-5
Salt Water Corrosion
The boat has been designed for operation in fresh water unless it is a model in the
MasterCraft Saltwater Series. If operating a fresh-water model temporarily in salt, pol-
luted or brackish water, thoroughly flush the boat with fresh water as soon as possible
afterward. The entire engine cooling system should be flushed with fresh water for at
least ten (10) minutes after each use in such waters.
Boats operated continuously in salt water should be equipped with the closed cool-
ing system to preserve engine life.
Marine Growth
If accelerated marine growth is a problem in the area in which the boat will generally be
operated, an anti-fouling bottom paint may be necessary to slow growth while protecting
the gel coat.
Before selecting a bottom paint, talk with other boaters and an authorized MasterCraft
dealer’s service department to determine the product that works best in the area. Many
local variables may also aect the selection of paint. Be sure to follow the paint manu-
facturer’s directions exactly.
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