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.
This cross in white color is a symbol for Christianity. The flag of Denmark is named Dannebrog meaning Danish cloth and is very popular in Denmark. The meaning of the two colors is for red strength and courage, fearlessness and for white truth and especially peace.