Centerboard schooner Earnest/Academy

I'm looking for views of below the waterline of centerboard schooners that might be similar to the 89-foot schooner Earnest built in 1875 in Baltimore by William E. Woodall for the U.S. Coast Survey, which was purchased by the California Academy of Sciences in 1905 (closed bid auction sale of $1000 was finalized by Theodore Roosevelt), and name changed to schooner Academy prior to leaving through the bridgeless Golden Gate for a 17-month scientific collecting expedition to the Galapagos Islands (Academy Bay in the islands was named for the schooner). I have very little information on the centerboard mechanism, weight, and construction, and would enjoy learning more.
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Matthew J. James
Department Chair, Professor of Paleontology
Department of Geology
Sonoma State University
Rohnert Park, California 94928
Web page: http://sonoma.edu/geology/