USC&GS Drift was a United States Coast Survey schooner built in 1876 specifically to anchor in offshore waters to undertake current measurements. She was transferred to the United States Lighthouse Board on May 20, 1893 to become the lightship Light Vessel # 97 or (LV-97) on the Bush Bluff station until retirement and sale in 1918 to become the W. J. Townsend which was scrapped in 1945.
LV-97, Bush Bluff Lightship in 1914
USC&GS George S. Blake, in service 1874–1905, is, with the U.S. Fish Commission steamer Albatross, one of only two US oceanographic vessels with her name inscribed in the façade of the Oceanographic Museum, Monaco due to her being "the most innovative oceanographic vessel of the Nineteenth Century" with development of deep ocean exploration through introduction of steel cable for sounding, dredging and deep anchoring and data collection for the "first truly modern bathymetric map of a deep sea area."
USC&GS George S. Blake c.1870s
Sigsbee Sounding Machine – invented by Charles D. Sigsbee and modified from Thomson Sounding Machine. Basic design of ocean sounding instruments stayed the same for the next 50 years. Here the sounding machine is used to set a Pillsbury current meter at a known depth. In: The Gulf Stream, by John Elliott Pillsbury, 1891. Note caption on photo: "Sounding Machine And Current Meter in Place, Steamer Blake"
Coast and Geodetic Survey steamer Blake, Washington Navy Yard, c. 1880.
1882 book about the steamer "Blake" by U. S. Navy Lieutenant-Commander Charles Sigsbee