Many ships were wrecked in and around San Francisco Bay. During the centuries San Francisco Bay with its strong currents, rocky reefs and low fog conditions has become a place of more than a hundred shipwrecks. Ever since San Francisco Bay was discovered during land expedition by Gaspar de Portolà in 1769, it has been one of the most popular harbors.
During the California Gold Rush, thousands of ships sailed in and out of San Francisco. The sea became the cheapest way of bringing goods to the growing city. From 1848 to 1869, ships carried to and from San Francisco 500,000 passengers. Many fishing and whaling vessels navigated the waters of San Francisco Bay. In the 1880s San Francisco was a whaling capital of the United States.
Caroline Amelia, a Danish bark, wrecked on Mile Rocks on March 19, 1850. The Daily Alta California wrote that "Danish bark Caroline Amelia, which cleared on the 16th inst. for Costa Rica, was wrecked on the Mile Rocks in the offing yesterday morning. She was running for "the needles" when the breeze suddenly died away and a strong ebb tide set her in shore. She dropped anchors but her chain cables parted, and, in spite of all the exertions of the officers and crew she was driven by force of the current directly upon the above named rocks, staving an ugly hole in her bottom. Being an old ship her timbers soon gave way and filling steadily she went down in about ten fathoms of water, entirely out of sight. The captain succeeded in getting his chronometers, instruments, clothes, and money out of the ship before she sunk, and the crew saved all their dunnage".
Golden Fleece was a 968-ton clipper. It was wrecked on April 22, 1854, as it was exiting Golden Gate on a voyage way to Manilla. The wreck occurred at the rocks near Fort Point. The Daily Alta California wrote that "lying broadside OR to the rocks... bilged and full of water, her mainmast is gone, also the fore and main top mast". On April 22, 1854, the wreck was sold in a public auction and "The purchasers of the wreck are busily engaged stripping her of everything moveable, at the same time preparations are being made to raise her... The sails, rigging, guns, &C., saved by the consignee of the ship, were sold at auction yesterday, the two brass pieces bringing $580".