Uttmark's guide to the United States local inspectors examination for masters and mates of ocean going steam and sailing ships (1919)
Uttmark, Fritz E · [New York] The Author · leaf 44
the Artificial Horizon? Any liquid in a state of rest forming a reflectivesurface is an Artificial Horizon. Mercury beinggenerally used for this purpose. 48.—*What is the Dip of the Horizon? The dip of the sea horizon is the angle of de-pression at the point of ob-servation due to the elevationof… … Fig. 32. UTTMARKS GUIDE
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