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.
Other meanings associated with the color blue: 1  Combining the colors red, white, and blue create a patriotic color palette for the United States, mirroring the colors in the American Flag. 2  Navy blue and white, when used together, create a nautical, oceanic color palette that often represents sailing, and sailors.