| Charts use different horizontal chart datums as a reference for specific geographical positions. |
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| Meanwhile, many off-datum charts with unknown older horizontal datums still exist for the Labrador coast. |
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| In this mode of operation, you can position the machine axes manually or by increments, set the datums, and tilt the working plane. |
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| The SSB was published on 11 February 2002 to further raise awareness about this important safety issue of navigation practices and chart datums. |
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| Positions referred to different datums can differ by several hundred metres. |
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| The Centre has added a note at the bottom of its maps enabling users to convert coordinates to and from the different datums. |
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| If the datums differ, shifts may appear from some meters up to more than one kilo meter! |
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| Spatial Reference System Dictionaries, to facilitate the use of multiple datums and projections. |
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| Projections and datums will be described after the coordinate system descriptions. |
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| This makes it possible to manage the pallet datums independently of the workpiece datums. |
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| Even though the two methods are independent, the two vertical datums would correspond to an identical surface if the realizations would be errorless. |
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| Each datum is associated with a particular reference spheroid that can be different in size, orientation and relative position from the spheroids associated with other horizontal datums. |
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| While centre of gravity does not appear to be a factor in this accident, having two datums for the weight and balance reference material increases the likelihood that errors will occur during weight and balance amendments. |
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| Canadian charts use datums that are deliberately set low so that the amount of water actually present in a given place will rarely ever be less than what is stated on the chart. |
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| However, it can show your position using one of 191 different datums. |
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| This unit returns to the mapping screen, using the datums you specified. |
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| Map datums: More than 100 local map datums. |
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| Other datums may also cover the entire world, or just a small portion. |
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| As mentioned before, modern geodetic datums rely on the surfaces of geocentric ellipsoids to approximate the surface of the earth. |
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| Several datums were in use around the world, all using different spheroids, because mean sea level undulates by as much as 100 metres worldwide. |
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| Many other datums are used in practice, depending on the locality and tidal regime. |
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| Bathymetric data is usually referenced to tidal vertical datums. |
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| The Cartesian systems of different datums are not equivalent. |
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| Datums are another important map aspect related to projection. A datum provides a base reference for measuring locations on Earth's surface. |
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