Download Gecdis v8

Gecdis v8 – User’s Manual
Term
Definition
HASP Key
Key that is connected on the parallel or USB port of the computer and allows
to use the software. Also, it makes it possible to use a specific configuration on
another computer without any enabling. In such a case, it acts as a mobile
licence/configuration.
HDT (HeaDing True)
Sentence that defines heading information.
Heading to Steer
Heading that should be followed by the ship to reach the next wheel-over or
waypoint. This value refers to the geographical north and moves in the same
way as the Own Ship’s heading.
Head-up
Chart orientation that depends on the Own Ship’s heading, and is always
turned to the top of the screen.
Heaving
Vertical movement of the ship on water surface.
Height of Tide
The vertical distance at any moment between the water level and chart datum.
Horizontal Datum
An area of uniform horizontal datum.
IHO (International
Organization created in 1948 by the United Nations. This is the first
Hydrographic Office)
international organism only devoted to maritime issues. OMI mainly tries to
improve maritime security and prevent from maritime pollution provoked by
ships.
Isobath
A line on a map joining points on the bed of the sea or other body or water,
situated at an equal vertical distance beneath the surface.
Latitude
Scale of distance from Ecuador to north or south graduated from 0 to 90
degrees
Leeway angle
Difference between heading and the leeway track.
Leg
Section of a route that links two points. A route can be made of several
sections.
Licence
Proof of the lawful use of the software.
Log
Device allowing to measure ship’s speed from run distance during a certain
time.
Long Time Tags
Time interval between each time mark that is associated to the ship’s track.
Longitude
Angular distance measured in degrees from a point of the Earth to the original
meridian.
Main view
A part of Gecdis screen that displays ENC data. Gecdis screen is composed
with several parts that you can display or not.
Mark
Object that is inserted by the user and allows to indicate the location of a point
in the chart.
Maximum XTE
Maximum allowed difference to a route. This difference is materialized by a
line on each side of the route. When the Own Ship exceeds the maximum XTE
(and the route is enabled), an alarm is generated.
MMSI
The Marine Mobile Service identification.
Navigation status
Situation of the ship that is defined with outdoor conditions.
ISD M 038G EN - September 2014
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