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.
The flag has a white field, with a red Latin cross inside a blue canton. The shades of red and blue, and the dimensions of the flag and canton, have no official specifications. The Flag's Symbolism The flag's most conspicuous symbol is the Christian cross, the most universal symbol for Christianity.