Seiwa SW701i SW701e - Manual (Page 95)

97 User Manual
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Fix Status
Indicates the quality of the position fix signal.
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Fuel Consumption Rate
Estimated fuel consumption rate (per hour) of an engine boat referred to its
relative estimated cruising speed.
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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.
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Goto
Function that defines the destination point and activates the navigation to it.
The destination can be placed on any location of the map, an existing Mark
point or on a predefined Route.
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GPS = Global Positioning System
Satellite based navigation system operated by the US Department of Defence.
It gives the navigator a position 24 hours a day, 365 days a year under any
weather conditions.
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HDG = Heading
Horizontal direction in which a ship actually points or heads in any moment
(see also COG).
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HDOP = Horizontal Dilution Of Precision
Precision of the positioning system (GPS). The smaller HDOP value indicates
higher position accurately.
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Home mode
All operations refer to the ship's position.
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Landmarks
Landmarks are any prominent object such as monument, building, silo, tower,
mast, ..., on land which can be used in determining a location or a direction.
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Latitude
Angular distance North or South of the equator measured by lines encircling
the earth parallel to the equator in degrees from 0° to 90°.
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LAT/LON
Coordinate system using Latitude and Longitude coordinates to define a posi-
tion on earth.
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Lat/Lon Grid
Grid of parallels (of Latitude) and meridians (of Longitude) drawn on the map.
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LOG Speed
Speed of the vessel relative to the water, provided by an instrument with a sub-
merged transducer for measuring the distance/speed travelled by the vessel.
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Longitude
Angular distance East or West of the prime meridian (Greenwich meridian) as
measured by lines perpendicular to the parallels and converging at the poles
from 0° to 180°.
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Loran
Positioning system which determines the current position of the vessel by
measuring the difference in the times of reception of synchronized radio pulse
signals transmitted by two or more fixed stations.
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Magnetic Deviation
Value, expressed in degrees East or West that indicates the direction in which
the north indicator on the compass card is offset from the magnetic north (the
difference expressed in degrees East or West between the compass north and
the magnetic north).
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Magnetic Variation
Angle between the magnetic and geographic meridians at any place, expressed