Chris-Craft 2015 21 Carina Owner's Manual page 90

EIC Installation Overview (Continued)
Trim Tab Zinc Plate
Each trim tab contains a sacrificial zinc plate which slows
the development of corrosion on the tab. This plate
should be inspected and replaced when necessary.
Figure 3-28. Trim Tab
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Systems
Figure 3-27. Trim Tab System Overview
Figure 3-29. Trim Tab Zinc Plate
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