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pl23_theb2236.jpg

The tools of the trade for navigating during launch hydrography

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb2236jpg

Description

The tools of the trade for navigating during launch hydrography.Metallic and plastic three-arm protractors for plotting three-point fixes.Sextant in background.1931 Hydrographic Manual

Credit

NOAA Central Library

Collection

Historic Coast & Geodetic Survey

Nautical Charting

Navigation

3-Point Sextant Fix

Keywords

Charting

Navigation

Visual Signals

Sextant