Centissima Reef

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Centissima Reef is the reef which surrounds Sears Rock west of Rodeo Beach in the Pacific Ocean off Marin County, California.[1] Some early reports refer to Centissima Rock and Sears Rock as separate sub-surface navigation hazards, but present-day nautical charts show Sears Rock as part of the larger Centissima Reef.

A 1908 report on San Francisco Bay stated that a survey was then in progress to investigate the cost of removing both Sears Rock and Centissima Reef, along with and , near in San Francisco Bay.[2] In 1922, Representative Julius Kahn told a congressional committee that neither Sears Rock nor Centissima posed a navigation hazard as they had been blasted several years previously: "They are not visible, neither of them. ... [Centissima Rock] is practically at 40 feet. It is a little below the channel, a little south of the channel."[3]

Coordinates: 37°49′41″N 122°33′00″W / 37.827984°N 122.549976°W / 37.827984; -122.549976

References[]

  1. ^ USGS
  2. ^ Luther, Wagoner; Heuer, William Henry (1908). San Francisco Harbor, its Commerce and Docks: With a Complete Plan for Development, being the Report of the Engineers of the Federated Harbor Improvement Associations. Britton & Rey. pp. 9–10. Retrieved 7 February 2012.
  3. ^ United States. Congress. House. Committee on Rivers and Harbors (February 7, 1922). San Francisco Harbor, Calif: Hearings on the Subject of the Improvement of Entrance to San Francisco Harbor, House of Representatives, Sixty-Seventh Congress, Second Session. Government Printing Office. pp. 4–5. Retrieved February 7, 2012.
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