Navigational Beacons

The Golden Gate Bridge is also equipped with navigational and warning lights for travelers by sea and by air.  Originally, a red rotating aircraft beacon shown on the top of each tower. Here is one of the original beacons on display at the 2011 Marin County Fair:

In 1980, the beacons on top of the towers were replaced with 360-degree flashing red beacons.  The Bridge main cables are also marked with red cable outline lights.  In 1982, they were replaced with new and more efficient lights. 

For seafaring vessels, there are red navigation lights on the south pier fender and white and green lights below the deck at mid-span.