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.
From 1794 until 1817, at least 4 more states had been added to the country. The flag, however, stayed the same until 1818 when Congress decided that the flag should have 13 stripes to honor the 13 original colonies and a white star to represent each state in the Union. What Do The Colors Of The American Flag Mean? Today, the flag continues to carry the 13 red and white alternating stripes and now displays 50 white, 5-pointed stars against a blue background, representing the 50 states.