service until May 1853. She was then used as a spare steamer and later placed on the San Francisco – Columbia River and Puget Sound service. A state historic landmark, cross and monument mark the spot where she was wrecked near Humboldt Bay on January 7, 1860 with the loss of 38 lives. SS Fremont (1851–1861): Built 1850, she was purchased by Pacific Mail Steamship Company and sent to San Francisco in 1851. Used on the San Francisco – Panama City service until spring 1852, she was then used on the San Francisco to Columbia River service. In February 1861 she was sold to Flint & Holladay for their coastal routes. SS Republic (1851–1861): In early 1850 she was sold to Howard & Aspinwall and was sent to the Pacific coast, arriving at Panama City on July 15, 1850. She then entered service between Panama City and San Francisco for George Law. Sold to the Pacific Mail Steamship Company in January 1851, and used mostly on coastal services with occasional voyages to Panama City until 1855. Sold to Holladay & Flint in 1861. SS Isthumus (1851–1854): Formerly used between San Francisco and Panama for George Law between May 4, 1850 and April 1851, she was then purchased by Pacific Mail Steamship Company. She made occasional Panama City voyages until late 1853, when she was put on the San Francisco to San Diego service. She was sold in January 1854 and renamed Southerner. SS Columbus (1851–1854): Sailed from New York on February 12, 1850 and arrived San Francisco June 6, 1850. Sold to the Pacific Mail Steamship Company in 1851, it operated on the San Francisco to Panama City route until 1854. Chartered to the U. S. Navy for a while in 1854 she was then sold to the Panama Railroad Company and operated on the west coast of Central America. SS Antelope (1851): Operated between San Francisco and Panama between October 1850 and March 1851 for George Law. Sold to Pacific Mail Steamship Company in the spring of 1851, and resold for use on the Sacramento River. SS Golden Gate (1851–1862): Built and launched for the Pacific Mail Steamship Company on January 21, 1851, she entered the San Francisco to Panama City service in November 1851. She stayed in this service until she was beached and was burned at sea near Manzanillo, Mexico on July 27, 1862 with the loss