Record Details

page 1870

Oregon Digital

Field Value
Title page 1870
Relation gov serial set 1905
Date 2005-10-05 to 2005-10-12
Rights This item is in the public domain. Acknowledgement of the University of Oregon Libraries as a source is requested.
Type page
Format Scanned from originals using Silverfast AI 6.0 on UMAX Powerlook III flatbed scanner. Scanned images saved as 16 bit grayscale tiffs. 327.126 kb 8 bit - Gray Gamma 2.2 - greyscale Omnipage 14 used to OCR 8 bit tiffs and generate text files for full text access. 16 bit grayscale and 48>24 RGB color tiffs edited in Photoshop CS 8.0: cropped, rotated, reduced in size, levels adjusted, grayscale bit depth reduced to 8 and JPEGs created.
Description The steamer, moving at the rate of from 3 to 4 knots an hour, and kept as nearly as possible on parallel ranges, was located by two simultaneous sextant angles, every 5 minutes, when moving straight ahead, and additionally whenever a change of course was made. Soundings were taken every half minute, and, as soon as a position had been observed, it was plotted on the chart to enable the chief of party to watch and correct the position of the tug. The soundings taken were reduced to "mean of...
Identifier http://oregondigital.org/u?/wwdl,3215

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