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 striped Ribbon of Saint George, seen tied to a car in Moscow, is a symbol of military valour in Russia, widely associated with Russian patriotism. Awareness ribbons are symbols meant to show support or raise consciousness for a cause. Different colours and patterns are associated with different issues.