Commission Implementing Regulation (EU) 2018/1973 of 7 December 2018 amending Implementing Regulation (EU) No 909/2013 on the technical specifications for the electronic chart display and information system for inland navigation (Inland ECDIS) referred to in Directive 2005/44/EC of the European Parliament and of the Council

• (a) In navigation mode, only the chart orientation ‘relative motion, head up’ and the ‘centred’ or ‘off centred’ presentations, as required for the radar picture, are permitted.

• (b) In information mode, at least the chart orientations ‘north’ and ‘parallel to the waterway axis’ as well as positioning are recommended. By connection of a positioning sensor, the displayed part of the chart can automatically follow the mariner's own vessel's position.

4.5.   Position and bearing of the own vessel

• (a) In navigation mode, the own vessel's position shall always be visible in the display area, whether ‘centred’ or ‘off centred’ as specified in the document referred to in point 2(f) of Section 1.

• (b) In navigation mode the heading line, which runs from the display centre to the top and which shall be always visible, shall represent the heading of the mariner's own vessel.

4.6.   Information density

The information density shall be at least adjustable to the three switch steps: ‘Base’, ‘Standard’ and ‘All Information’. The latter displays all other features in addition to the ‘Standard’ display, individually on demand. All corresponding visible features are defined in the ‘Performance Standard’ and the ‘Presentation Standard’ (incl. the ‘Presentation Library for Inland ECDIS’) (Sections 1 and 3 of this Annex).

4.7.   Ranges/Range rings

• (a) In navigation mode the following fixed ranges and range rings are prescribed according to the radar regulations:

Range	Range rings
500 m	100 m
800 m	200 m
1 200 m	200 m
1 600 m	400 m
2 000 m	400 m
4 000 m	800 m

• (b) Smaller and larger ranges with a minimum of four and a maximum of six range rings are permitted.

• (c) Inland ECDIS equipment in navigation mode shall have fixed range rings with the intervals set out in points (a) and (b) and at least one variable range marker (VRM).

• (d) Switching on/off of fixed and variable range markers shall be independent of each other and their display shall be clearly distinguishable.

• (e) The position of the VRM and the corresponding displayed distance shall use the same increments and resolution.

• (f) The functions of the VRM and the electronic bearing line (EBL) may additionally be realised by a cursor and by a corresponding numerical display, showing range and bearing of the cursor position.

4.8.   Picture brilliance in navigation mode

• (a) The brightness of the display shall be adjustable to the operationally necessary value. This applies in particular to operation in darkness.

• (b) Chart and radar picture shall have separate brightness controls.

• (c) Because of the strongly different environment brightness of bright day and dark night, another control for the basic brightness of the display shall be available additionally to the colour tables in the menu.

4.9.   Picture colours

At least the colour combinations included in the IHO-S-52 Presentation Library,6.0 (colour tables) for day, dusk and night shall be supported.

4.10.   Pick report

• (a) It shall be possible to get all underlying textual and/or graphical information concerning user selections of the features that are displayed in the chart.

• (b) This additional textual and/or graphical information shall not hamper the view of the waterway in the navigational chart.

4.11.   Measuring features

• (a) Measuring features for distances and bearings are required.

• (b) Resolution and accuracy shall at least be the same as those of the display, but may not suggest better values than those of the chart data.

4.12.   Input and editing of skippers' own chart entries

• (a) Inland ECDIS equipment shall allow input, storing, modifying and deletion of additional chart information by the skipper (skippers' own features) in navigation mode as well as in information mode.

• (b) These own chart entries shall be distinguishable from the SENC data, and shall not overlay or degrade the radar picture in navigation mode.

4.13.   Loading and updating of SENCs

• (a) All manual activities concerning loading or updating of charts shall be possible only outside the navigation mode.

• (b) Automatic updating shall not downgrade the performance of the navigation display.

• (c) A rollback function shall be implemented to allow restoring to the last working combination.

4.14.   Radar picture presentation and overlay

• (a) The radar image representation is mandatory for operation in the navigation mode.

• (b) The dimensions, resolution and attributes of the radar presentation shall fulfil the relevant radar requirements.

• (c) The radar picture shall not be degraded by other contents of the picture (see also point 4.3(c) of this Section).

• (d) Provided the functional requirements are fulfilled, overlaying of different information layers is permitted.

• (e) The overlay of information regarding the position and orientation of other vessels is only allowed when:

• — the information is up-to-date (real-time), and

• — the age of information does not exceed the maximum time out values provided in the first table in point 5.1(e) of Section 1. The symbols shall be marked as outdated, if the age of the information exceeds 30 seconds for moving vessels. The position information of the own vessel shall only be displayed when the position is detected by an on board subsystem and not if the position is received from a repeater station.

• (f) The overlaid information derived from tracking and tracing devices regarding the position and orientation of other vessels shall be faded out at a user-definable range. The activation of this feature and the selected range of the restricted area shall be indicated on the display.

• (g) Only if the heading of other vessels is available, the position and the orientation of those other vessels may be presented by:

• — a directed triangle, or

• — a true outline (to scale).

In all other cases a generic symbol shall be used (an octagon is recommended, a circle shall be used for inland applications only).

• (h) It shall be possible to switch off the chart and any other information layer and to display only the radar picture by one easily accessible control element or menu area.

• (i) If the quality and plausibility monitoring of the Inland ECDIS equipment detect that the chart cannot be oriented and/or positioned with the accuracy required by this Annex, an alarm shall be presented on the display and the chart shall be switched off automatically. If there is no radar signal, the information mode shall be displayed. In both cases a warning or an alarm shall be given. The switching shall always be possible by manual action.

4.15.   Inland ECDIS functions with immediate access

• (a) The following operational functions require direct access:

• — RANGE

• — BRILLIANCE

• — COLOURS

• — INFORMATION DENSITY

• (b) These functions shall have either own control elements or own menu areas, which are arranged in the highest menu level and are permanently visible.

4.16.   Permanently visible function parameters

The following function parameters shall always be visible:

• — actual RANGE

• — sensor STATUS (in navigation mode: radar tuning, position quality, alarms; in information mode: if connected, GNSS receiver, AIS and heading)

• — selected WATER LEVEL (if available)

• — selected SAFETY DEPTH (if available)

• — selected INFORMATION DENSITY

5. SERVICE FUNCTIONS

Service functions shall be protected by password or other suitable measures against unauthorised access. They shall not be selectable in navigation mode.

The requirements of Chapters 5.1 to 5.3 are only applicable to navigation mode.

5.1.   Static correction of the chart position

• (a) The position of the mariner's own vessel shall be presented ‘centred’ or ‘off centred’ on the display in accordance with the radar requirements. The chart position shall match the radar image. Assuming an absolute position's input the permissible static difference between actual radar position and displayed radar centre shall not exceed 1 m.

• (b) It shall be possible to correct an offset error (distance between the positions of the position sensor and the radar sensor).

5.2.   Static correction of the chart orientation

• (a) The difference between the heading line orientation and the vessel's axis shall not be greater than ± 1,0 degree.

• (b) Chart and radar image shall have the same orientation. The static directional error between heading line and chart orientation shall be less than ± 0,5 degree.

5.3.   Configuration of interfaces

• (a) It shall be possible to configure interfaces for connected sensors, actors and signals.

• (b) Interfaces shall comply with existing interface specifications as defined in the document referred to in point 2(l) of Section 1 and the interface specifications for rate of turn indicators (20 mV/deg/min) as defined in the document referred to in point 2(d) of Section 1.

6. HARDWARE TEST AND REQUIRED CERTIFICATES

• (a) The test shall consist of a comparison between the Equipment Under Test (EUT) and the requirements of this Annex.

• (b) Proved equivalent tests, and proved and documented test results shall be accepted without renewed tests.

• (c) The entire Chapter 6 is valid for navigation mode, but the requirements that do not contain a specific reference to navigation mode are also valid for information mode.

6.1.   Resistance to environmental conditions in navigation mode

• (a) Inland ECDIS equipment, as described in Chapter 2.2.4 of this Section, shall fulfil the requirements of the document referred to in point 2(k) of Section 1 concerning the resistance to environmental conditions (humidity, vibration and temperature; the latter reduced according to Chapter 3.1 of this Section) and concerning electromagnetic compatibility.

• (b) The provider or his representative shall submit a relevant conformity declaration of an accredited laboratory.

6.2.   Equipment documentation

The technical documentation shall be checked to assure that it is complete, appropriate, and understandable, and that it is sufficient for unproblematic installation, configuration and operation of the equipment.

6.3.   Interfaces

• (a) All interfaces shall be documented correctly and completely.

• (b) Electronic circuits shall be designed failsafe, mechanically as well as electronically, and shall not have degrading repercussions on connected equipment.

6.4.   Characteristics of operation controls

All operation controls shall be checked regarding the ergonomic and functional mode of operation and shall fulfil the requirements of this Annex.

6.5.   Characteristics of the display in navigation mode

The display shall fulfil all requirements of this Annex concerning dimension, displayable colours, resolution, and variation of brilliance.

7. TEST OF THE CHART PRESENTATION, OPERATION AND FUNCTIONALITY

7.1.   Preparation of the Equipment Under Test (EUT)

The EUT shall be installed, assembled and connected according to the installation manual. After switching on the test SENC shall be loaded.

7.2.   Test of the operation modes

All operating modes as described in the operating manual shall be successively started up and tested. The requirements of Chapter 4 of this Section shall be fulfilled.

7.3.   Test of the displayed features

Whether all features included in the test SENC are visible and correctly displayed shall be tested. For this test, the information density shall be switched to ‘all features’. The system shall be capable to at least display all features according to the Presentation Standard for Inland ECDIS (Section 3 of this Annex). Additionally other user-selectable symbol sets are allowed.

If symbols that deviate from the document referred to in point 2(i) of Section 1, the Inland ECDIS Presentation Library, are used for the presentation of any chart information, then they shall:

• — be legible,

• — be certain and unambiguous in their meaning,

• — be of sufficient size to support the nominal viewing distance.

Symbols added to the ECDIS Presentation Library shall be clearly distinguishable from Presentation Library symbols.

7.4.   Test of the scale dependent information density (SCAMIN)

• (a) Whether the SCAMIN functionality (the minimum scale at which the feature may be used for ECDIS presentation) is installed correctly shall be tested.

• (b) For this test, the range shall be used at which the feature shall be visible according to its SCAMIN enumeration (refer to Chapter 8.4 of the document referred to in point 2(h) of Section 1).

7.5.   Test of brilliance variation in navigation mode

The Inland ECDIS equipment shall be operated in a dark room and the brilliance shall be brought to its lowest level. The brilliance of the features shall not exceed a value of 15 cd/m², and the background a value of 0,5 cd/m².

7.6.   Test of the colours

All user selectable S-52 colour tables shall be sequentially tested to conform to this Annex.

7.7.   Test of the measurement functions

• (a) All numeric displayed values of the electronic bearing line (EBL) and the variable range marker (VRM) shall exactly match with the analogue positions of the EBL and the VRM (or correspond with the cursor coordinates).

• (b) The resolution and increments of the numerical display shall be identical with the analogue values of EBL and VRM.

7.8.   Test of the chart update function

Before and after each test step the version numbers of the loaded SENCs and updates shall be recalled as described in the operation manual and showed on the display.

• — Step 1: Loading of the test SENC,

• — Step 2: Update of the test SENC,

• — Step 3: Test of the roll-back function,

• — Step 4: Loading of a new SENC.

After an update it shall be possible to recall and display all concerned features.

7.9.   Test of displayed features in more than one cell for the same area

• (a) It shall be tested whether all features included in the test SENC and in the additional overlay test SENC are visible and correctly displayed. For this test the information density shall be switched to ‘all features’.

• (b) It shall be tested whether it is possible to select one or more specific cells for presentation if there are several cells from different producers for the same area with the same usage.

• (c) It shall be tested whether the test bathymetric Inland ENC is displayed correctly together with the base SENC in accordance with Chapter 6 of the document referred to in point 2(i) of Section 1.

8. TEST OF RADAR PICTURE PRESENTATION AND OPERATION IN NAVIGATION MODE

8.1.   Preparations

• (a) For the test purposes, the manufacturer or provider shall provide a serial interface at the system to be approved (Equipment under test — EUT) which delivers the same actual values (as strings compliant with the document referred to in point 2(l) of Section 1) of position and heading that are used to position and orient the chart.

• (b) During the test, a reference system shall be used of which position and heading values are compared with those of the EUT.

• (c) The EUT shall be connected to any type approved radar equipment (to the choice of the provider).

• (d) The radar picture shall be adjusted in range and bearing with reference to the heading line.

8.2.   Test of the radar picture without under laid chart

• (a) If the Inland ECDIS equipment displays the radar picture but the radar operation control remains at the radar equipment (See Figures 2 and 3 of Section 4B), the radar picture of the inland ECDIS equipment shall be considered as the ‘daughter display’ of an item of radar equipment. In that case, the radar picture shall fulfil the display and picture-relevant requirements of the requirements for radar and rate-of-turn indicators as defined in the document referred to in point 2(f) of Section 1.

• (b) If the EUT is a radar installation with integrated Inland ECDIS functionality (See Figure 4 of Section 4B), all requirements of the standards for radar equipment and rate-of-turn indicators as defined in the document referred to in point 2(f) of Section 1 shall be fulfilled.

8.3.   Test of the radar picture, overlaid information from other vessels and the underlying chart

The Inland ECDIS equipment shall be installed in a reference environment. This may be real (on a vessel) or simulated. Position and orientation information of other vessels (according to the Inland AIS technical specifications) shall be applied with several information ages.

8.3.1.   Test of the radar overlay

• (a) The radar image shall not be degraded by the chart picture (refer to point 4.3(c) of this Section).

• (b) The overlay of information regarding the position and orientation of other vessels shall be only displayed when:

• — the information is up-to-date (nearly real-time), and

• — the age of information does not exceed the maximum time out values provided in the first table in point 5.1(e) of Section 1, Performance Standard for Inland ECDIS. The symbols shall be marked as outdated, if the age of the information exceeds 30 seconds for moving vessels. The position information of the own vessel shall not be displayed, if it is received from a repeater station.

• (c) The overlay of information derived from tracking and tracing devices regarding the position and orientation of other vessels shall be faded out at a user-definable range. The activation of this feature and the selected range of the restricted area shall be indicated on the display.

• (d) If the heading of other vessels is available, the position and the orientation of those other vessels shall be displayed by:

• — a directed triangle, or

• — a true outline (to scale)

For all other vessels a generic symbol shall be used (an octagon is recommended, a circle shall be used for inland applications only).

• (e) It shall be possible to switch off the chart and any other information layer and to display only the radar picture by one easily accessible control element or menu area.

• (f) The chart picture shall be renewed not later than the radar picture.

8.3.2.   Test of the chart positioning and orientation

• (a) The static offset of the chart position shall be less than ± 5 m in all ranges up to 2 000 m.

• (b) The static azimuth orientation offset error between radar and chart image shall be less than ± 0,5 degree.

• (c) The correction of the parameters referred to in points (a) and (b) shall be demonstrated in the service mode.

• (d) The dynamic deviation of the chart orientation at rates of turn less than ± 60 degree/min shall be less than ± 3 degree.

• (e) These tests shall be performed visually or by evaluation of measured data.

8.3.3.   Test of scale conformity

The chart's information shall be compared with well-known reference points contained in the radar picture in order to test whether the chart scale sufficiently conforms to the radar scale.

9. TEST OF ALARMS AND INDICATIONS

• (a) The alarms generated from Inland ECDIS equipment itself as well as the passed alarms delivered to the ECDIS by the connected sensors shall be tested.

• (b) The test procedure in navigation mode shall comprise the following situations:

• — any error in the Inland ECDIS equipment (built-in test equipment — BITE),

• — missing positioning signal,

• — missing radar signal,

• — missing rate of turn signal,

• — missing heading signal,

• — radar map matching not possible,

• — missing AIS signal.

• (c) The test procedure in information mode shall comprise the following situations:

• — any error in the Inland ECDIS equipment (built-in test equipment - BITE),

• — missing positioning signal,

• — missing heading signal,

• — missing AIS signal.

The Inland ECDIS manufacturers have to confirm in their system documentation that the system includes those test procedures and signal indicators in information mode.

10. TEST OF FALL BACK ARRANGEMENTS IN NAVIGATION MODE

• (a) This test shall demonstrate the reaction of the Inland ECDIS equipment to a failure of any internal or external component and the possible and required actions by the operator.

• (b) In addition, the operating manual shall be checked to determine whether the measures required by the operator are described adequately and appropriately.

SECTION 4A

MEASURES TO ENSURE SOFTWARE QUALITY

1. GENERAL REQUIREMENTS

Software used in navigation mode is a safety-relevant part of a navigation system. Providers of navigation systems shall make sure that all software components used in navigation mode allow safe navigation in every situation.

Requirements in Chapters 1.1 to 1.5 are only applicable to navigation mode, while requirements in Chapters 1.6 and 1.7 are applicable to both navigation mode and information mode.

1.1.   Software design requirements

Software components shall be clearly designed by means of established software design methods. The design specification shall indicate how safety requirements are addressed in the software design.

A software style guide shall be provided that specifies code writing style, documentation style, modularisation, conflict analyses and testing of software components. For every software component documents describing specification and design are required.

1.2.   Implementation requirements

Implementation of software modules shall be done by qualified developers, fully understanding the design and safety requirements.

If more than one developer is working on the navigation system software, a version control system shall be used that guarantees conflict-free development.

The implementation shall be according to the design specification and shall reflect the software style guide. Moreover, well known implementation problems (depending on the language used) shall be addressed in the implementation. This includes but is not restricted to:

• — null pointer handling,

• — un-initialised variables,

• — range checking,

• — array size verification,

• — memory allocation and de-allocation,

• — exception handling.

If parallel processing is used (e.g. multiple threads, tasks or processes) problems of conflict-free processing shall be addressed in the implementation. This includes but is not restricted to:

• — race conditions,

• — re-entrance problems,

• — priority inversion,

• — deadlocks.

1.3.   Test requirements

In accordance with the design specification, software modules shall be tested. The test results shall be compared with the design guidelines and documented in test reports.

Tests shall incorporate module as well as system tests. Providers of a navigation system shall use extensive simulator-based tests to ensure stability of their system. The simulator shall allow the simulation of a complete navigation environment including all required external sensors.

1.4.   Third party components requirements

Third party components, such as OEM (original equipment manufacturer) products, include software not developed by the navigation system provider. This includes but is not restricted to:

• — static or dynamic linked libraries,

• — computer aided design and engineering tools producing source or object code,

• — operating systems.

Third party software components shall be chosen according to the general safety requirements. The navigation system provider shall prove that third party components meet the high standards necessary for safe navigation either by providing acceptable quality certificates or by extensive and provable testing of the components.

1.5.   Requirements for additional services in navigation mode

Navigation systems may support additional services in navigation mode if they are useful. These services shall not interfere with other requirement in navigation mode.

The navigation system provider is responsible for additional test equipment, necessary to verify interface specification, protocol specification and compliance tests with the Inland ECDIS technical specifications.

1.6.   Language

Additional national versions of a type-approved Inland ECDIS shall reapply for type approval to be checked for the translation of the user interface. The type approval process is only foreseen for systems in navigation mode.

The qualified institution which performs the type approval process of an Inland ECDIS system may request an expertise by a certified translator regarding the correct translation in a specific language from the system manufacturer.

1.7.   Documentation requirements for users

The documentation (manuals) shall contain comprehensive information on the equipment, the installation, the operation and the service of the navigation system. The presentation of user-relevant information shall be clear, understandable and without unnecessary technical terms. The user manual shall at least be available in English, French, German and Dutch. The technical system description may be made available in English only.

2. METHODS OF TESTING AND REQUIRED RESULTS

2.1.   Navigation mode operation test

2.1.1.   Performance requirements

The navigation system shall make reliable estimations of position and heading. Moreover, the estimations of position and heading shall be checked by the system for conformity with the required accuracy.

Position and heading information shall be calculated and displayed for the same reference position. This shall normally be the centre of the radar antenna. A new position estimate shall at least be available with every revolution of the radar antenna.

2.1.1.1.   Position

The navigation system shall estimate and display the position of the vessel. The following minimal requirements shall be fulfilled under normal operation conditions:

• (a) The average position estimation shall not deviate more than 5 meters from the true position and shall cover all systematic errors.

• (b) The standard deviation σ shall be less than 5 meters and shall be based on random errors only.

• (c) The system shall be capable to detect deviations of more than 3σ within 30 seconds.

These results shall be verified by a realistic test of at least 60 minutes.

2.1.1.2.   Heading

The navigation system shall estimate and display the heading of the vessel. The following minimal requirements shall be fulfilled:

• (a) The average heading angle estimation shall not deviate more than 1 degree from the radar heading direction and shall cover all systematic errors. The offset between vessel heading direction and radar heading shall be less than 1 degree.

• (b) The standard deviation σ shall be less than 2 degrees and shall be only based on random errors.

These results shall be verified by a realistic test of at least 60 minutes.

2.1.2.   Sensor failure

The navigation system shall check proper operation of the position and heading estimation online. Problems shall be detected within 30 seconds. In case of malfunction, the navigation system shall inform the user about the problem and its consequences for navigation.

If a critical sensor alarm signalises that the position or the heading does not meet the required accuracy criteria, the navigation chart shall be switched off.

2.1.3.   Performance test interface

A navigation system provider shall equip navigation systems during the compliance test with a standard IEC 61162-1 interface sending the position and heading information used by the navigation system. This information shall be encoded by IEC 61162-1 sentences (see the document referred to in point 2(k) of Section 1) known as GGA (Global Positioning System Fix Data) and HDT (Heading True). Additional sentences like RMC (Recommended Minimum Navigation Information), ROT (Rate Of Turn) and VTG (Track made good and Ground speed) are accepted.

Those strings shall be sent preferably every 0,1 second, at least every second. Position and heading shall be according to the definitions in Chapter 2.1.1.1 and Chapter 2.1.1.2 of this Section.

2.2.   General software tests

2.2.1.   Equipment documentation

The following documents shall be provided for admittance and shall be shipped with every Inland ECDIS used in navigation mode:

• — User's manual,

• — Installation manual,

• — Service manual.

The following documents and files shall be provided during the admittance procedure and are not required for end users:

• — design specification,

• — software style guide,

• — certificates of third party software components or test and simulation protocols.

The documents and files provided shall allow for a complete verification of compliance with the Inland ECDIS technical specifications.

A user's manual shall be shipped with every Inland ECDIS system.

2.2.2.   Endurance test for navigation mode

The navigation system shall pass an endurance test of 48 hours of uninterrupted operation under normal operation conditions. The system shall provide standard interfaces for performance and resource monitoring during operation. Monitoring the system shall show no indication of system instability, memory leaking or any kind of performance loss over time. Navigation systems supporting additional services while running in navigation mode shall provide the necessary test equipment including all documents mentioned in Chapter 1.7 of this Section.

3. CHANGES TO CERTIFIED NAVIGATION SYSTEMS

3.1.   General requirements

Navigation systems installed on board shall be functionally equivalent to a system certified by authorities. For every system the navigation system provider shall ship a statement of compliance with the Inland ECDIS technical specifications and its functional equivalence to the certified system.

The competent authority is entitled to check Inland ECDIS compliance of installed systems at any time.

3.2.   Hardware and software changes

The navigation system provider may change software or hardware as long as Inland ECDIS compliance is maintained. Changes shall be fully documented and submitted to the competent authority, together with an explanation of how the navigation system is affected by those changes. The competent authority may require a partial or complete renewal of certification if considered necessary. The aforementioned also applies to the use of an approved Inland ECDIS with another national version of the operating system.

The following changes do not affect certification of the system and require only a notice to the competent authority:

• — minor changes on third party components (e.g. operation system or library updates),

• — use of equivalent or better hardware components (e.g. faster microprocessor, newer chip revisions, equivalent graphic card, etc.),

• — minor changes in source code or documentation.

SECTION 4B

SYSTEM CONFIGURATIONS (FIGURES)

Figure 1

Inland ECDIS equipment, self-sufficient system without connection to radar (system configuration 1)

Inland ECDIS Operation Panel

Processor

Inland ENC Display

Position Sensor

Figure 2

Inland ECDIS equipment, parallel installation with connection to radar (system configuration 2)

Radar Operation Panel

Inland ECDIS Operation Panel

Radar-Processor

ECDIS-Processor

Display Inland ENC with overlaid Radar Picture

Radar Display

Radar Sensor

Position Sensor

Figure 3

Inland ECDIS equipment with connection to radar and shared monitor (system configuration 3)

Inland ENC with overlaid Radar Picture

ECDIS-Processor

Inland ECDIS Operation Panel

Radar Operation Panel

Radar-Processor

Switch

Radar Picture

Display

Radar Sensor

Position Sensor

Figure 4

Navigational radar equipment with integrated Inland ECDIS functionality (system configuration 4)

Processor

Operation Panel

Display

Radar Sensor

Position Sensor

SECTION 5

GLOSSARY OF TERMS

Term or abbreviation	Definition	Source
Acronym	6-character-code of the feature/of the attribute.	Document referred to in point 2(a) of Section 1
Actor	An actor transforms an electrical quantity into another physical quantity (e.g. optical). An actor is the opposite of a sensor.
AIS	On-board equipment allowing automatic identification of ships for enhanced ship monitoring as well as voyage data recording and other functions. The automatic identification system should comply with the technical and performance standards laid down in Chapter V of the SOLAS Convention (Safety of Life at Sea).	Document referred to in point 2(r) of Section 1
All information density	All information density (all display) means the maximum amount of SENC information. Here, in addition to the standard display (Standard Information Density), also all other objects are displayed, individually on demand.	Section 1 of this Annex
Attribute	A defined characteristic of an entity (e.g. the category of a light, the sector limits, the light characteristics etc.). Definitions for diverse attributes may be derived from the Feature Catalogue for Inland ENCs referred to in point 2(h) of Section 1 of this Annex.	Document referred to in point 2(a) of Section 1
Cell (chart cell)	A cell is a geographical area containing Inland ENC or bathymetric Inland ENC data.	Document referred to in point 2(a) of Section 1
CIE colour calibration	Procedure to confirm that the colour specified in IHO S-52 is correctly reproduced on the ECDIS display.	Document referred to in point 2(c) of Section 1
Datum	A set of parameters specifying the reference surface or the reference coordinate system used for geodetic control in the calculation of coordinates of points on the earth. Commonly datums are defined as horizontal and vertical datums separately. For the practical use of the datum it is necessary to have one or more well distinctive points with coordinates given in that datum. The horizontal datum is a set of parameters specifying the reference for horizontal geodetic control, commonly the dimensions and the location of a reference ellipsoid. (The horizontal datum must be compliant with WGS 84.) The vertical datum is a surface to which elevations and/or depths (soundings and tide heights) are referred. For elevations commonly a level (equipotential) surface, approximately the mean sea level is used, for depths in many cases low water.	Document referred to in point 2(c) of Section 1 and Document referred to in point 2(n) of Section 1
Display base	Minimum information density; means the minimum amount of SENC information that is presented and which cannot be reduced by the operator, consisting of information that is required at all times in all geographic areas and under all circumstances.	Document referred to in point 2(d) of Section 1
Display scale	The ratio between a distance on the display and a distance on the ground, normalised and expressed as a ratio, e.g. 1:10 000 .	Document referred to in point 2(c) of Section 1
EBL	Electronic Bearing Line	Section 4 of this Annex
ECDIS	Electronic Chart Display and Information System (ECDIS) means 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, as amended, by displaying selected information from a system electronic navigational chart (SENC) with positional information from navigation sensors to assist the mariner in route planning and route monitoring, and if required display additional navigation-related information.	Document referred to in point 2(d) of Section 1
Edge	A one-dimensional spatial object, located by two or more coordinate pairs (or two connected nodes) and optional interpolation parameters.	Document referred to in point 2(a) of Section 1
Electronic chart	Very broad term to describe the data, the software, and the electronic system, capable of displaying chart information. An electronic chart may or may not be equivalent to the paper chart required by SOLAS Convention.	Document referred to in point 2(c) of Section 1
ENC	Electronic Navigational Chart; the data base, standardised as to content, structure and format, issued for use with ECDIS on the authority of government authorised hydrographic offices. The ENC contains all the chart information necessary for safe navigation and may contain supplementary information in addition to that contained in the paper chart (e.g. sailing directions) which may be considered necessary for safe navigation.	Document referred to in point 2(d) of Section 1
ENC cell	The geographic division of ENC data for distributing purposes.	Document referred to in point 2(e) of Section 1
ETSI	European Telecommunications Standards Institute
Enumeration	A specific quality or quantity assigned to an attribute (e.g. ‘leading light’, the limiting angles, the code specifying the light's colour – see attribute).	Document referred to in point 2(o) of Section 1
Feature	An identifiable set of information. A feature may have attributes and may be related to other features. A digital representation of all or a part of an entity by its characteristics (attributes), its geometry, and (optionally) its relationships to other features (e.g., the digital description of a light sector specifying, amongst others, sector limits, the colour of the light, the visibility range, etc., and a link to a light tower, if any).Definitions for diverse features may be derived from the Feature Catalogue for Inland ENCs referred to in point 2(h) of Section 1 of this Annex.	Document referred to in point 2(c) of Section 1
Feature catalogue	The comprehensive list of currently identified features, attributes and enumerations which are allowed for the use in Inland ENCs.	Document referred to in point 2(o) of Section 1
File	An identified set of S-57 records collected together for a specific purpose. The file content and structure must be defined by a product specification.	Document referred to in point 2(c) of Section 1
GNSS	Global Navigation Satellite System (GNSS) is a system that uses satellites to provide autonomous geo-spatial positioning.
Heading	The direction in which the longitudinal axis of a craft is pointed, usually expressed as an angular distance from north clockwise through 360 degrees (true, magnetic or compass).	Document referred to in point 2(c) of Section 1
Head-up display	The information shown on the display (radar or ECDIS) is directed so that the vessel's heading is always pointing upward. This orientation corresponds to the visual view from the bridge in direction of the vessel's heading. This orientation may require frequent rotations of the display content. Changing the vessel's course, or yawing of the vessel may render this unstabilised orientation mode illegible.	Document referred to in point 2(c) of Section 1
Human Machine Interface (HMI)	The user interface or human–machine interface is the part of the machine that handles the human–machine interaction. The engineering of the human–machine interfaces is enhanced by considering ergonomics (human factors). There are many ways to develop human-machine interface (HMI) screens for machine and process automation applications. Guidelines, standards, and handbooks covering HMI design include those published by ISA, ASM, ISO, and NUREG.
IEC	International Electrotechnical Commission: An international (non-governmental) organisation which produces world standards for electrical and electronical engineering with the objective of facilitating international trade.	Document referred to in point 2(c) of Section 1
IHO	International Hydrographic Organization: Coordinates the activities of national hydrographic offices; promotes standards and provides advice to developing countries in the fields of hydrographic surveying and production of nautical charts and publications.	Document referenced in point 2(c) of Section 1
IHO registry	IHO Geospatial Information Infrastructure Registry. A registry is the information system on which a register is maintained. In the case of S-100 IHO hosts a registry that provides a facility to store various registers of hydrographic-related information.	Document referenced in point 2(m) of Section 1
IMO	International Maritime Organization: formerly called IMCO, the IMO is the specialised agency of the United Nations responsible for maritime safety, efficiency of navigation and prevention of marine pollution from vessels.	Document referenced in point 2(c) of Section 1
Information Mode	Means the use of the Inland ECDIS for information purposes only without overlaid radar image.	Section 1 of this Annex
Inland AIS	Automatic identification system for inland waterway vessels as set out in the Regulation (EC) No 415/2007 for vessel tracking and tracing systems.	Document referenced in point 2(p) of Section 1
Inland ECDIS	An Electronic Chart Display and Information System for inland navigation, displaying selected information from an Inland System Electronic Navigational Chart (Inland SENC) and optionally, information from other navigation sensors.	Section 1 of this Annex
Inland ENC (IENC)	Inland Electronic Navigational Chart (IENC) means the database, standardised as to content, structure and format, for use with inland electronic chart display and information systems operated on-board of vessels transiting inland waterways. An IENC is issued by or on the authority of a competent government agency, and conforms to standards initially developed by the International Hydrographic Organization (IHO) and refined by the Inland ENC Harmonization Group. An IENC contains all the chart information necessary for safe navigation on inland waterways and may contain supplementary information in addition to that contained in the paper chart (e.g. sailing directions, machine-readable operating schedules, etc.) which may be considered necessary for safe navigation and voyage planning.	Section 1 of this Annex
Inland ENC domain	Domain within the IHO Geospatial Information Infrastructure Registry dedicated for Inland ENC – related entries.	Document referenced in point 2(m) of Section 1
Inland SENC	Inland System Electronic Navigational Chart: a database resulting from the trans formation of the Inland ENC by Inland ECDIS for appropriate use, updates to the Inland ENC by appropriate means and other data added by the mariner. It is this database that is actually accessed by the Inland ECDIS for the display generation and other navigational functions. The Inland SENC may also contain information from other sources.	Section 1 of this Annex
Integrated display	Means a head-up, relative-motion picture consisting of the Inland SENC overlaid with the radar-image with matching scale, offset and orientation.	Section 1 of this Annex
Look-up table	A table giving symbology instructions to link SENC objects to point, line or area symbolisation and providing display priority, radar priority, IMO category and optional viewing group.	Document referred to in point 2(c) of Section 1
Navigation mode	Means the use of the Inland ECDIS for conning the vessel with overlaid radar image.	Section 1 of this Annex
North-up display	Information shown on the display (radar or ECDIS) with the north direction upward.	Document referred to in point 2(c) of Section 1
Other navigational information	Navigational Information not contained in the SENC, that may be displayed by an ECDIS, such as radar information.	Document referred to in point 2(c) of Section 1
Own vessel	The term which identifies the vessel upon which an ECDIS is operating.	Document referred to in point 2(c) of Section 1
Own vessel's safety contour	The contour related to the own vessel 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.	Document referred to in point 2(c) of Section 1
Performance standard for ECDIS	Standard developed under the authority of IMO to describe the minimum performance requirements for navigational devices and other fittings required by the SOLAS Convention, included in MSC.232(82), as adopted by IMO on 5 December 2006.	Document referred to in point 2(c) of Section 1
Pick report (feature report)	The result of querying a displayed point-symbol, line or area for further information from the data base which is not represented by the symbol.	Document referred to in point 2(c) of Section 1
Presentation library for ECDIS	A set of mostly digital specifications, composed of symbol libraries, colour schemes, look-up tables and rules, linking every feature and attribute of the SENC to the appropriate presentation of the ECDIS display. Published by IHO as Annex A, Special Publication No 52 (S-52).	Document referred to in point 2(c) of Section 1
Product specification	A defined subset of the entire specification combined with rules, tailored to the intended usage of the transfer data. (The ENC Product specification specifies the content, structure and other mandatory aspects of an ENC.)	Document referred to in point 2(c) of Section 1
(Radar) range	Distance from the radar antenna. For inland navigation the radar range has to be sequential switchable according to the Radar Regulations.	Document referred to in point 2(q) of Section 1
Relative motion display	A relative motion display shows the chart information and radar targets moving relative to the vessel position fixed on the screen.	Document referred to in point 2(c) of Section 1
Route planning	An ECDIS function in which the area is displayed which is needed to study the intended route, to select the intended track, and to mark the track, its way points and navigational notes.	Document referred to in point 2(d) of Section 1
SCAMIN	The minimum scale at which the feature may be used e.g. for ECDIS presentation.	Document referred to in point 2(a) of Section 1
SENC	System Electronic Navigational Chart: An internal data base in an Inland ECDIS which results out of the transformation of ENCs and their update files and other data added by the boat master. It is this data base that is actually accessed by the ECDIS for the display generation and other navigational functions. The SENC may also contain information from other sources.	Document referred to in point 2(c) of Section 1
Spatial object	An object which contains locational information about real world entities.	Document referred to in point 2(c) of Section 1
Standard Information Density	The default amount of SENC information that shall be visible when the chart is displayed when ECDIS is switched on. A screen with Standard Information Density (standard display) is the default state of the Inland ECDIS.	Section 1 of this Annex
[Vessel] Tracking and Tracing	Tracking: function of maintaining status information on the vessel, possibly combined with information on cargo and consignments; tracing: and the retrieval of information concerning the whereabouts of the vessel, possibly combined with information on cargo, consignments and equipment, as set out in the Regulation (EC) No 415/2007 for vessel tracking and tracing systems.	Document referred to in point 2(p) of Section 1
True motion display	A display in which the own vessel and each radar target moves with its own true motion, while the position of all charted information remains fixed.	Document referred to in point 2(c) of Section 1
User-defined settings	Means the possibility to use and store a profile of display and operation controls- settings.	Section 1 of this Annex
VRM	Variable Range Marker.	Section 4 of this Annex
WGS 84	World Geodetic System: The geodetic basis for the ‘Navigational Satellite Timing and Ranging — Global Positioning System’, which enables the surveying of the earth and its entities and was developed by the United States Department of Defence. This global geodetic reference system is recommended by IHO for hydrographic and cartographic use.	Document referred to in point 2(n) of Section 1

Appendix 1

Comparison of the structures of the standard for (Maritime) ECDIS and of the technical specifications for Inland ECDIS

(Maritime) ECDIS	Inland ECDIS	OPEN ECDIS FORUM http://ienc.openecdis.org
IMO MSC.232(82) revised Performance Standards for ECDIS, December 2006 Appendix 1: Reference Documents Appendix 2: SENC Information available for display during route planning and route monitoring Appendix 3: Navigational Elements and Parameters Appendix 4: Areas for which special conditions exist Appendix 5: Alarms and Indicators Appendix 6: Back-up requirements Appendix 7: RCDS mode of operation	SECTION 1: Performance Standard
IHO S-57: Transfer Standard for Digital Hydrographic Data, Edition 3.1, Supplement No 2, June 2009 Part 1: General Introduction Part 2: Theoretical Data Model Part 3: Data Structure Appendix A: IHO Object catalogue Introduction Chapter 1: Object Classes Chapter 2: Attributes Annex B: Attributes/Object Classes Cross Reference Appendix B: Product specifications Appendix B.1: ENC Product Specification Annex A: Use of The Object Catalogue for ENC Annex B: Example of CRC Coding Appendix B.2: IHO Object Catalogue Data Dictionary Product Specification	SECTION 2: Data Standard for Inland ENCs	Inland ENC Feature Catalogue Bathymetric Inland ENC Feature Catalogue Product Specification for Inland ENCs Product Specification for bathymetric Inland ENCs IENC Encoding Guide
IHO S-62 ENC Producer Codes, Edition 2.5, December 2009	SECTION 2a: Codes for Producers and Waterways	Codes for Producers and Waterways
(Maritime) ECDIS	Inland ECDIS	OPEN ECDIS FORUM
IHO S-52 Specification for Chart Content and Display Aspects of ECDIS, Edition 6, March 2010 Annex A: IHO ECDIS Presentation Library Annex B: Procedure for initial calibration of colour displays Annex C: Procedure for maintaining the calibration of displays Appendix 1: Guidance on Updating the Electronic Chart Annex A: Definitions and Acronyms Annex B: Current Updating Practice for Paper Charts Annex D: Estimate of Data Volume	SECTION 3: Presentation Standard	Presentation Library for Inland ECDIS Look-up Tables Symbols Conditional Symbology Procedures
IEC 61174 Edition 3.0: ECDIS — Operational and Performance Requirements, Methods of Testing and Required Test Results, 2008-09	SECTION 4: Operational and Performance Requirements, Methods of Testing and Required Test Results SECTION 4A: Measures to Ensure Software Quality SECTION 4B: System Configurations
S-32 Appendix 1: Hydrographic Dictionary – Glossary of ECDIS-Related Terms	SECTION 5: Glossary of Terms