ENC Display Settings

Menu path
→ → Portrayal

Chart Display (Portrayal)

Configuration of the visual representation of ENCs on the screen.

No.	Element	Description
1	UKC Management	UKC management
2	Portrayal style	ENC display style
3	Fiches	Display of additional objects

No.	Element	Description
1	Portrayal style	Display style of chart symbols: S52 or INT1. For S52, Boundaries and Chart symbol size are available When INT1 style is selected, a message will appear in the notification area
2	Color mode	Colour scheme determines the colour gradation of depth areas on the chart. Options: 2 colours and 4 colours. When 4 colours is selected, Shallow contour and Deep contour become available
3	Shallow contour	Shallow water sets a depth value less than the Safety contour — used only to determine the fill colour of depth areas when the 4 colours scheme is selected. It is recommended to set the value equal to the vessel’s maximum draft
4	Deep contour	Deep contour sets a depth value greater than the Safety contour — used only to determine the fill colour of depth areas when the 4 colours scheme is selected. It is recommended to set the value to 30 m.
5	Boundaries	Area boundaries — select the area boundary display mode: Symbolized or Simple. Available only when S52 is selected
6	Paper Chart symbol	Chart symbols — select the symbol display mode: Symbolized or Simple. Available only when S52 is selected

No.	Element	Description
1	Danger symbol	Danger symbols enables the display of the Danger symbol for all point objects located in the Safety depth area that pose a hazard
2	Scale min	Application of automatic ENC generalization when the chart scale is reduced
3	Full light lines	Light sectors enables the display of light sectors
4	Shallow pattern	Depth highlighting enables hatching of the safety contour area
5	LAT/LON grid	Enables the display of the coordinate grid
6	Events	Enables the Events layer — display of operational markers
7	Hide AIO hatches	Enables suppression of the AIO layer (Admiralty Information Layer)

UKC Management

Caution

The term “danger depth” refers exclusively to depths displayed on the electronic chart, reduced to its datum (Vertical Datum). The “danger depth” value is used by ECDIS to automatically select the “safety contour” for a vessel with given dimensions, a standard under-keel clearance margin, and a correction for the excess of the actual water level above the chart datum, and to generate appropriate warnings.

The actual depth measured by the echo sounder under specific navigational conditions will generally differ from the depths contained in the electronic chart.

Important

UKC — minimum under-keel clearance control is designed for navigation in conditions of water level fluctuations: tidal phenomena, as well as wind-driven water level variations.

UKC provides dynamic calculation of the danger depth depending on the current water level value. The water level can be obtained from various sources: tide gauge data, tide tables, ASM.

Manual Entry of Safety Contour and Safety Depth

No.	Element	Description
1	UKC Management	Select the method for entering the safety depth and safety contour. Select Disable for manual entry of the safety contour and safety depth. A warning will appear in the notification area
2	Safety contour	Manual entry of the Safety contour value. ECDIS highlights on the ENC the contour equal to the set value, or the nearest deeper contour. Monitoring is performed along the selected contour
3	Safety depth	Manual entry of the safety depth value. The safety depth is set by the navigator based on procedures adopted by the Company for the given vessel. ECDIS performs monitoring and generates warnings for depths equal to and less than the entered value
4	Water level elevation above chart datum	Manual entry of the current water level value. With manual entry of safety depth and safety contour, this is for informational purposes only
5	Duration	Duration of validity of the entered water level value. The period during which the entered level value is applied. When the level validity period expires, a warning is generated 5 minutes after the level validity period expires, an alarm is generated
6	Time remaining	Remaining time for the applied water level setting. Countdown
7	Calculated safety depth	Calculated safety depth value

Danger

Changing the safety depth and safety contour values does not account for changes in vessel height when monitoring bridges and overhead clearances.

Automatic Safety Depth Calculation

Important

To automatically account for the excess of the actual (or expected) water level above the datum to which chart depths are reduced, MANUAL ENTRY OF SAFETY CONTOUR AND SAFETY DEPTH VALUES CAN BE DISABLED.

The danger depth value \(Z_{dgr}\) is calculated automatically based on the maximum static draft of the vessel \(H_{st}\), the standard under-keel clearance margin \(dH\) to account for dynamic draft, and the excess of the current (or expected during route planning) water level above the chart datum \(d_Z\).

\[Z_{dgr} = H_{st} + dH - d_Z\]

The value of \(d_Z\) is positive if the current water level is above the chart datum, and negative if the current water level is below the chart datum.

The safety contour is selected from among the contours encoded in the ENC, with the value closest to but greater than the danger depth value.

For displaying the safety contour, the corresponding contour encoded in the chart displayed on the screen is used. For generating warnings and alarms, data from the largest-scale ENC at the vessel’s position (or during route safety check) is always used, regardless of the scale of the displayed chart.

No.	Element	Description
1	UKC Management	Select the method for entering the safety depth and safety contour. Select Enabled for automatic calculation of the safety contour and safety depth. ECDIS calculates the safety depth automatically based on the current draft setting, minimum under-keel clearance, and current water level. Simultaneously with the safety depth, the vessel’s current height above the ENC datum is recalculated. ECDIS highlights on the ENC as dangerous the contour equal to the calculated safety depth value, or the nearest deeper contour. Monitoring is performed along the selected contour
2	Water level elevation above chart datum	Manual entry of the current water level value
3	Duration	Duration of validity of the entered water level value — the period during which the entered level value is applied. When the level validity period expires, a warning is generated 5 minutes after the level validity period expires, an alarm is generated and the calculated safety depth value is reset to zero, and water level fluctuation accounting ceases
4	Time remaining	Remaining time for the applied water level setting. Countdown
5	Calculated safety depth	Calculated safety depth value

Hint

When forming a barge-tow composition, the danger depth and composition height are calculated based on the greatest draft and height values.

Chart Objects

Menu path
→ → Chart Objects

The general principle to follow when selecting chart display settings is minimizing information noise while simultaneously displaying all significant cartographic information on the screen needed for current navigational tasks.

No.	Element	Description
1	Display Mode	Display load (drop-down list) — select one of the Chart display load presets. By default, ECDIS contains three load presets: Base, Standard, and Full. These presets cannot be modified or deleted. ECDIS provides the ability to create User presets for chart display load based on existing presets
2	Save as…	Save as… saves the current display settings as a user preset. Creates multiple user presets providing optimal load for current conditions. Quick switching of chart display load is performed in **Quick Settings**
3	Save	Save saves changes to the selected user preset. During operation, the navigator can add or remove objects from the display of the selected User preset
4	Delete	Delete deletes only the selected user preset
5	Chart object display settings	Over-scaled indicator — indication of ENC over-scaling (disabling this function is not recommended) Chart boundary — enable/disable display of ENC boundaries Unknown — enable/disable display of the unknown object symbol (disabling this function is not recommended) Shallow water dangers — enable/disable display of hazardous objects located in shallow water. Does not apply to contours and depths (disabling this function is not recommended) Safe hazards shown — enable/disable display of objects located deeper than the safety contour but posing a hazard. Applies only to topographic and infrastructure objects Safe depth shown — enable/disable display of danger depths Date depended objects — enable/disable display of objects with time-limited validity, e.g.: temporary corrections or user objects with time restrictions set by the navigator (disabling this function is not recommended) Highlight date depended — enable/disable highlighting of temporary objects Accuracy — enable/disable display of hydrographic survey accuracy symbols (CATZOC) Highlight info — enable/disable display of “Info” symbols Highlight document — enable/disable display of attached document link symbols Contour labels — enable/disable display of depth contour labels Depth contour — enable/disable display of depth contours. Disabling depth contour display does not disable the safety contour display Safety contour labels — enable/disable display of safety contour labels Spot soundings — enable/disable display of all spot soundings Seabed — enable/disable display of seabed type labels Cables, pipelines — enable/disable display of submarine cables and submarine pipelines Port features — enable/disable display of port service symbols Magnetic variation — enable/disable display of magnetic variation values Administrative areas — enable/disable display of administrative areas (national and administrative boundaries, as well as departmental administrative boundaries) Important text — enable/disable display of warnings related to navigational safety Names — enable/disable display of geographical and administrative names National language — enable/disable display of labels, geographical and administrative names in the national language of the ENC producer. If the ENC does not contain encoded names in the national language, names will be displayed in English Light description — enable/disable display of light characteristics and aids to navigation, including floating warning marks All other text — enable/disable display of additional labels Mariner’s text — enable/disable display of navigator’s labels and notes Route leg bearing — enable/disable display of bearing labels for activated route legs
6	Chart viewing date	Viewing date controls the display of temporary objects (temporary corrections and/or user objects) — enables/disables the display of temporary objects whose validity extends to the specified date. The default value is Current Date; available options include setting an arbitrary date or a date period If the navigator sets a date other than the current date or the specified date range does not include the current date, the message Display time Conditional will be shown in the notification area
7	Customize display	Customize groups opens the fine-tuning window for chart object display. Group changes do not affect the base load presets: Base, Standard, and Full. Editing of the selected preset is performed, or upon saving, a user chart display load preset will be created or a previously created user preset will be overwritten
8	AIO	Display settings for Admiralty Information Overlay objects: AIO Notice — General notification of changes in AIO layers AIO No Information Notice — Indicates that there is no information/data in AIO layers for this area AIO Temporary Notice — Temporary changes/warnings in AIO layers (usually up to 6 weeks) AIO Preliminary Notice — Preliminary information about planned changes in AIO AIO ENC Preliminary Notice — Preliminary notices relating to Electronic Navigational Charts (ENC) within AIO

Note

The AIO group is not saved in ENC display presets and is configured individually

Standard Display

Menu path

Single-action function. Designed to unconditionally apply the standard ECDIS settings “by default”, in accordance with the current version of IEC 61174.

Pressing the button again returns to the previous ECDIS state.

Navigational Settings

Menu path
→ → Navigational Settings

Main Parameters

No.	Element	Description
1	Chart Orientation	Chart orientation sets the chart orientation. An arrow indicating North direction is displayed in the upper left corner of the chart window. ECDIS provides four chart orientation modes: North Up (By N) — the chart is oriented with the north frame towards the top of the screen — the conventional north Course Stabilized (CRS STAB) — chart orientation relative to the stabilized heading line or a set direction (Course Up). The chart is displayed relative to the set direction — the chart is oriented by the vessel’s heading (along the vertical axis of the screen). Subsequent heading changes will cause the heading line to deviate from the screen vertical, while the image remains stationary. The heading line may deviate when “yawing”. The heading line can be corrected by pressing the button again — the image will be reoriented to the new heading. In the absence of heading data, ECDIS switches to COG orientation. ECDIS settings provide automatic correction based on the deviation criterion from the current heading in the range of plus/minus 45 degrees with 1 degree accuracy Head Up (By Course) — chart orientation based on the instantaneous heading value (Head Up). The initial direction is the monitor vertical, along which the vessel’s heading line is oriented (Heading - HDG). The chart is oriented by the vessel’s heading. The image is oriented relative to the heading line. When the heading changes, the image rotates relative to the stationary heading line. In the absence of a heading sensor or heading sensor data, ECDIS will orient the chart relative to COG By Route — the chart is oriented along the direction of the current route leg. The mode is only available when a route is activated
2	Motion Mode	Motion mode — select absolute or relative motion mode. The motion mode selection is independent of the chart orientation mode. Both modes are available at all scales with any chart orientation Relative Motion Mode — the chart shifts in the direction opposite to the vessel’s velocity vector, the vessel symbol is stationary. Navigational settings provide the ability to change the position of the displayed chart area and the own vessel’s position on the ECDIS screen True Motion Mode — the chart is stationary, the vessel symbol moves. Navigational settings provide the ability to enable vessel mark reset. When the vessel mark reaches the set value (from 10% to 75%) of the screen edge position, the mark is automatically shifted by a specified distance from the opposite screen edge in the direction opposite to the vessel’s current heading
3	Set Fix	Set offset the cursor will change to . Using the left mouse button (or screen touch), set the vessel mark position in the chart window. The vessel symbol will be placed at the specified position. The offset is applied not to the chart but to the window. Fixed offset only works in Relative Motion (RM) mode. When switching to True Motion (TM) mode, the offset is reset automatically
4	Reset Fix	Disable offset the fixed offset will be disabled. The vessel position will be moved to the centre of the screen
5	Display Reset in TM	Vessel mark reset in TM mode sets the boundary value at which the chart will be refreshed, as a percentage of the chart panel size
6	Display Reset in HDG STAB	Reset in stabilized heading mode sets the permissible heading deviation value above which the ENC will be reoriented

Note

Navigational settings allow configuring the chart display mode in accordance with current navigational tasks. It is recommended to use True Motion when navigating in confined waters and Relative Motion when navigating in the open sea.

Important

Course Up and Head Up orientation can be performed based on manually entered heading, or on COG calculated during dead reckoning with drift correction.