Si-tex SNS-1100, User Manual, Page: 87 / 114

User Manual -
87
• Cultural Features
Any man-made topographic feature as built-up area, buildings, roads.
• Datum
The Latitude and Longitude lines printed on any map are based on certain models of the
shape of the earth: these models are called Datum or Coordinate Systems. There are many
different Datum in use, each one gives different Lat/Lon positions for an identical point on the
surface of the earth (see also Map Datum and Fix Datum).
• Dead Reckoning
Procedure to determine the current position of a vessel by applying to the last known position
the way that has been made (since the last known position was received). This procedure is
normally based on the last received GPS position, Speed and Course or to the last received
GPS position, Log Speed and Heading.
• Default
Original factory setting for any menu selection. The default values are set after a Master
Reset (RAM Clear).
• Depth Area
Sea areas included in the user selectable range of minimum and maximum depth limits. The
sea area that is beyond the selected range is filled by an uniform white color, the sea area
that is inside the selected range is filled by ordinary multicolor shading. The Spot Soundings
and Depth Contours are displayed on the range only.
• Depth Line
(Also called Bathymetric Line) Imaginary line connecting points of equal water depth.
• Destination
In order to tag on the chart the point, towards which the ship is Heading, you can use a special
mark, called destination. When the destination is placed, all navigation data referred to this
point.
• DGPS = Differential GPS
Provides even greater positioning accuracy than standard GPS.
• DPT = Depth from Transducer
Water Depth below the Transducer. The Distance from the Depth Transducer to the ground.
• DST = Distance
Geographical distance between two points on the map. It is possible to select the unit among
Nm, Sm and Km.
• ETA = Estimated Time of Arrival
Predicted time of reaching a destination or Waypoint
• File
Collection of information (of the same type) stored on a USER MEDIA. Each file must have
a unique name, ideally one that describes its contents. Filenames are kept in a directory on
each USER MEDIA.
• Fix
Current position of the vessel provided by the GPS (connected to the chart plotter or built-in)
or other positioning systems.
• Fix Status
Indicates the quality of the position fix signal.
• Fuel Consumption Rate
Estimated fuel consumption rate (per hour) of an engine boat referred to its relative estimated
cruising speed.
• GNSS = Global Navigation Satellite System
Any single or combined navigation system based on satellites. The current available satellites
systems are: GPS, GLONASS and the combined GPS and GLONASS.
• Goto
Function that defines the destination point and activates the navigation to it. The destination