San Francisco (sans-serif typeface) and iOS 10 is a new variant named "SF Compact Rounded". It is used in the new contact placeholder icons introduced in the OSes. The "SF Serif" variant was showcased during the keynote at WWDC 2018 on June 4, 2018 when the all-new Apple Books app was introduced. This variant is exclusive to Apple Books in iOS 12 and macOS Mojave, is not mentioned in Apple's Typography design guidelines, and is not publicly downloadable like other variants of the San Francisco typeface. Since its introduction, San Francisco has gradually replaced most of Apple's other typefaces on their software and hardware
USS San Francisco (C-5) Shipbuilding Company, Baltimore, Maryland on 20 April 1939. USS San Francisco (C-5) The first USS "San Francisco" (C-5) (later CM-2) was a steel protected cruiser in the United States Navy. She was later named Tahoe and then Yosemite, becoming the third US Navy ship to bear the name "Yosemite". She generally resembled her predecessor , with a main armament of twelve 6-inch guns. "San Francisco" was launched on 26 October 1889, at the Union Iron Works, San Francisco, California; sponsored by Miss Edith W. Benham; and commissioned on 15 November 1890, Captain William T. Sampson in command. "San Francisco" was