Metal parts underwater are subjected to two basic types of corrosion: galvanic corrosion and stray current corrosion. Both can harm your boat, propeller, and motor if not correctly monitored and avoided.
According to Flags Unlimited, the significance of the flag's colors is this: The Blue represents the officer and the courage they find deep inside when faced with insurmountable odds. The Black background was designed as a constant reminder of our fallen brother and sister officers.
What does the white and orange checkered flag mean at the beach. kgb answers Â» Local & Lookup Â» Definitions & Word Origins Â» What does the white and orange checkered flag mean at the beach. We could find no match for that color. Green: Water should be safe for swimming, but take care all the same. Yellow: Caution, water getting dangerous.