Sigsbee Sounding Machine. View of shipyard from ship deck with Sigsbee sounding machine in the Institution Archives, Acc. 11-006, Box 005, Image No. MAH-2763Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520 MAH-2763

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Photo credit: © SBS Eclectic Images / Alamy / Afripics
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