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pl23_theb2102.jpg

Hydrographic survey operations - note line from leadline extending ahead

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb2102jpg

Description

Hydrographic survey operations - note line from leadline extending ahead.Two observers shooting angles

Collection

Historic Coast & Geodetic Survey

Nautical Charting

Soundings

Sounding Boats

Keywords

Charting

Soundings

Leadline