This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...depth, indicating the channel lines, and the sub-aqueous contours, correspond to contour curves on ordinary topographic maps, and are drawn in a similar manner. In the case of sub-aqueous contours it is customary to indicate different depths by characteristic lines, a special form of line being used to designate each ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...depth, indicating the channel lines, and the sub-aqueous contours, correspond to contour curves on ordinary topographic maps, and are drawn in a similar manner. In the case of sub-aqueous contours it is customary to indicate different depths by characteristic lines, a special form of line being used to designate each depth shown. The forms commonly used in drawing lines of equal depth are as follows: For the shallowest contour: ..--For the contour next in depth: .... For the contour next in depth: ...... and so on for successive contours. In addition to such details as have been described, the direction of the current is shown by an arrow and the directions of true and magnetic north are shown by suitable symbols. In many cases it is considered advisable to show the positions of survey stations and sounding ranges on a hydrographic chart. This practice, however, is not common, especially in cases of charts intended for navigation purposes alone. Hydrographic Chart of River. In Figure 55 is given a hydrographic chart of part of a navigable river, showing the various details that have been described, including sounding ranges, depths and limits of channel. The lines of survey are drawn in light, full lines, the ranges are shown by broken lines; the angle stations are numbered consecutively down stream, and the ranges are designated by letters of the alphabet, as shown. Depths of soundings are expressed in feet and tenths at located positions of respective soundings. The soundings were made on ranges across the axis of the stream. They were located by two angles measured on shore, according to the method previously described. In this case the survey line between adjacent angle stations was used as a base, an observer with a transit being located at the angle poin
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Add this copy of Hydrographic Surveying to cart. $19.31, new condition, Sold by Books2anywhere rated 5.0 out of 5 stars, ships from Fairford, GLOUCESTERSHIRE, UNITED KINGDOM, published 2022 by LEGARE STREET PR.
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Add this copy of Hydrographic Surveying to cart. $32.06, new condition, Sold by Books2anywhere rated 5.0 out of 5 stars, ships from Fairford, GLOUCESTERSHIRE, UNITED KINGDOM, published 2022 by LEGARE STREET PR.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Add this copy of Hydrographic Surveying to cart. $35.77, new condition, Sold by Paperbackshop International rated 4.0 out of 5 stars, ships from Fairford, GLOS, UNITED KINGDOM, published 2022 by LEGARE STREET PR.
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Add this copy of Hydrographic Surveying: Methods, Tables and Forms of to cart. $25.27, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Hydrographic Surveying: Methods, Tables and Forms of to cart. $36.44, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
