What is IMO performance standard for ECDIS?

STANDARD  DISPLAY  MEANS
The SENC information that should be shown when a chart is first displayed on ECDIS. Depending upon the needs of the mariner, the level of the information it provides for route planning or route monitoring may be modified by the mariner.
DISPLAY  BASE  MEANS
The level of SENC information which cannot be removed from the display, consisting of information which is required at all times in all geographic areas and all circumstances. It is not intended to be sufficient for safe navigation.

• A ship’s position-fixing system,
• To a gyro compass and
• To a speed and distance measuring device.

For any ships without a gyro compass, ECDIS should be connected to a marine transmitting heading device Additional navigation systems incorporated into ECDIS can include but are not limited to:

• AIS (automatic identification system)
• RADAR (radar image overlay RIO)
• VDR (voyage data recorder)
• Echo sounder
• NAVTEX

• It should always be possible to display the SENC in a “north-up” orientation. other orientations are permitted.
• ECDIS should provide for true motion mode. Other modes are permitted.
• When true motion mode is in use, reset and generation of the neighbouring area should take place automatically at a distance from the border of the display determined by the mariner

• IHO recommend colours and symbols should be used to represent SENC information
• The colours and symbols other than those mentioned above should be those used to describe the navigational elements
• SENC information when displayed at the scale specified in the ENC should use the specified size of symbols, figures and letters
• ECDIS should allow the mariner to select whether own ship is displayed in true scale or as a symbol

• Route planning and supplementary navigation tasks;
• Route Monitoring
• The effective size of the chart presentation for route monitoring should be at least 270 mm by 270 mm.

• The chart information to be used in ECDIS should be the latest edition of that originated by a government authorized hydrographic office, and conform to IHO standards.
• The contents of the SENC should be adequate and up-to-date for the intended voyage to comply with regulation V/20 of the 1974 SOLAS Convention.
• It should not be possible to alter the contents of the ENC.
• Updates should be stored separately from the ENC.

1. Radar information or other navigational information may be added to the ECDIS display. However, it should not degrade the SENC information and it should be clearly distinguishable from the SENC information.
2. ECDIS and added navigational information should use a common reference system. If this is not the case, an indication should be provided.

1. It should be possible to carry out route planning and route monitoring in a simple and reliable manner including both straight and curved segments
2. It should be possible to adjust a planned route by, for example: Adding waypoints to a route, Deleting waypoints from a route, Changing the position of a waypoint, Changing the order of the waypoints in the route.
3. It should be possible to plan an alternate route in addition to the selected route. The selected route should be clearly distinguishable from the other.

1. ECDIS should not degrade the performance of any equipment providing sensor inputs. Nor should the connection of optional equipment degrade the performance of ECDIS below this standard.
2. ECDIS should be connected to systems providing continuous position fixing, heading and speed information.

1. ECDIS should be provided with means for either automatically or manually carrying out on-board tests of major functions. In case of a failure, the test should display information to indicate which module is at fault.

1. It should be possible to operate ECDIS and all equipment necessary for its normal functioning when supplied by an emergency source of electrical power in accordance with the appropriate requirements of chapter II-1 of the 1974 SOLAS Convention.
2. Changing from one source of power supply to another or any interruption of the supply for a period of up to 45 seconds should not require the equipment to be manually re-initialized.