This view of the Golden Gate was taken from the entrance to the Palace of the Legion of Honor, an art museum in San Francisco's Lincoln Park. We are looking into San Francisco Bay with the Pacific Ocean at our backs. Worth noting: if you sail under the Golden Gate Bridge, you've already sailed past about half the city.
This narrow opening to the bay was called the Golden Gate long before the bridge was built in the 1930's. One might assume it was given that name because thousands of ships rushed through it during the Gold Rush, which started in 1849. But in fact this strait was given that name by John C. Fremont in 1846. He saw it as a "golden gate" to trade with Asia.
These waters outside the Golden Gate are known as the graveyard of ships. At low tide pointed rocks look like rows of teeth on either side. At high tide, they lie hidden beneath the surface, waiting to rip open any vessel that strays outside the central channel.
Because of this danger, bay pilots take control of any ship entering or leaving the bay. They must learn the topography of the strait and and study the currents driven by the tides. But their knowledge is not enough to ensure safe passage even when aided by GPS.
Sometims at night, as we lie in our beds, we hear the fog horns like a chorus of tubas warning the pilots to beware the graveyard of ships.