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Navigation information system that electronically displays vessel position and relevant nautical chart data and information from the ECS database on a display screen, but does not meet all IMO requirements for ECDIS
Electronic Chart System (ECS)
the manual application of corrections to ENC DATA in the SENC by human operator
Manual Update / Correction
A display in ECDIS oriented so that it corresponds with the usual ORIENTATION of the nautical chart.
North-Up display
The organization responsible for setting chart standards which governmental hydrographic centers must comply with when creating ENCs.
International Hydrographic Organization (IHO)
In ECDIS, a DISPLAY in which OWN SHIP remains stationary, while all other charted information and targets move relative to own ship’s position.
Relative Motion Display
a navigation information system which with adequate back-up arrangements can be accepted as complying with the up-to-date chart required by regulations V/19 and V/27 of the 1974 SOLAS Convention
Electronic Chart Display and Information System (ECDIS)
The data base, standardized as to content, structure and format, issued for use with ECDIS on the authority of government authorized hydrographic offices which contains all the chart information necessary for safe navigation
Electronic Navigational Chart (ENC)
In ECDIS a display whereby own ship position is referenced to the ground. It is usually performed in conjunction with radar/ARPA, it can be determined by computing set and drift or by the use of GPS/DGPS
Ground Stabilized
This organization published the "Performance Standards for Electronic Chart Display and Information Systems (ECDIS)"
International Maritime Organization (IMO)
In ECDIS the contour related to the own ship selected by the mariner from the contours provided for in the SENC, to be used by ECDIS to distinguish on the DISPLAY between the safe and the unsafe water, and for generating anti-grounding ALARMS
Safety Contour
The level of information displayed on the ECDIS from which all optional data has been removed.
Base Display
A facsimile of a paper chart originated by, or distributed on the authority of, a government-authorized hydrographic office.
Raster Navigational Chart
This ORIENTATION corresponds to the visual view from the bridge in the direction of the ship’s heading.
Heads Up Display
The IHO Specification for Chart Content and Display of ECDIS which includes a database of all symbols.
IHO S-52
A box appearing around your vessel on the ECDIS which activates alerts and alarms.
Safety Frame (Watch Vector)
A display of ECDIS data, considered adequate for safe navigation, which can always be recalled by a single operator action.
Standard Display
All information displayed on the SENC is attached to one of these two types of locations
Points and Polygons
When using GPS for the positioning system, the SENC and the GPS should be referencing the same ____
Geodetic Datum
This organization is responsible for compiling and updating ENCs for US waters.
National Oceanographic and Atmospheric Administration (NOAA)
The distance to port or starboard of your intended track that your vessel may go before an alarm is activated.
Cross-Track Error (XTE)
The data pertaining to the exact location of an object in the SENC
Spatial Data
This database that is accessed by ECDIS for the display generation and other navigational functions, and is equivalent to an up-to-date paper chart. It may also contain information added by the mariner and information from other sources.
System Electronic Navigational Chart (SENC)
How many satellites does the US NAVSTAR GPS system use?
24
In ECDIS a specification for the Transfer Standard to facilitate data exchange between computer systems
IHO S-57
In ECDIS, the operational navigational function in which the chart information is displayed, under control of the positioning sensor input, according to the vessel’s present position, giving alarms when set parameters are exceeded.
Route Monitoring