Practical Notes On Hydrographic & Mining Surveys ..
Practical Notes On Hydrographic & Mining Surveys ..
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In our eReader you can find the full English version of the book. Read Practical Notes On Hydrographic & Mining Surveys .. Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Notes On Hydrographic & Mining Surveys ..
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Soundings were taken over the northeast portion of the work upon lines gov- erned by flag ranges which were established upon the piers at dis- tances of fifty feet from each other, in the same manner as before described. The ranges of buoys with each other were noted as they occurred upon the lines of sounding run when making the described survey ; and it is a matter of the first importance, that such buoy and station ranges be recorded whenever they are observed to occur ; for the rate of spee...d at which the boat is pro- pelled may be imperceptibly changed during the process of soun d- ing a line, through the agency of light winds or currents, and a line produced on the range of two objects which are included in a sur- vey, a,nd carefully platted upon a map of the same, is practically equivalent to a reading upon an instrument, and the point where such a produced line intersects with a line of soundings will "cut oft'" or divide the line into sections, so that the spaces between soundings can be laid off* more correctly upon each section of the line.
What to read after Practical Notes On Hydrographic & Mining Surveys ..?
You can find similar books in the "Read Also" column, or choose other free books by Hearding, William Hellins to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Soundings were taken over the northeast portion of the work upon lines gov- erned by flag ranges which were established upon the piers at dis- tances of fifty feet from each other, in the same manner as before described. The ranges of buoys with each other were noted as they occurred upon the lines of sounding run when making the described survey ; and it is a matter of the first importance, that such buoy and station ranges be recorded whenever they are observed to occur ; for the rate of spee...d at which the boat is pro- pelled may be imperceptibly changed during the process of soun d- ing a line, through the agency of light winds or currents, and a line produced on the range of two objects which are included in a sur- vey, a,nd carefully platted upon a map of the same, is practically equivalent to a reading upon an instrument, and the point where such a produced line intersects with a line of soundings will "cut oft'" or divide the line into sections, so that the spaces between soundings can be laid off* more correctly upon each section of the line.
What to read after Practical Notes On Hydrographic & Mining Surveys ..?
You can find similar books in the "Read Also" column, or choose other free books by Hearding, William Hellins to read onlineMoreLess
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