Hazard Indication

Chart indication

Depending on the configured monitoring parameters, a scanning area is formed around the vessel symbol: stern and bow sections.

Objects within this area that belong to monitoring groups will be highlighted on the chart.

Additionally, the scanned area contains a dynamic sector-lane. For objects within the dynamic scanning lane, Alarms will be generated. Alarms are generated regardless of the display highlighting settings. |

Scanning area elements

No.	Element	Description
1	Own ship on the chart	Current vessel position
2	Speed vector of the vessel with forecast for the set time	The vector shows the direction and speed of movement (in the example: 5-minute forecast)
3	Bow section of the scanning area	Constructed based on the Sector-lane width. Alarms are not generated for objects in this area; only highlighting is performed (if enabled)
4	Stern section of the scanning area	The center of the sector is located at the CCRP and the sector equals 180 degrees. The radius of this sector is equal to half the Sector-lane width. Alarms are not generated for objects in this area; only highlighting is performed (if enabled)
5	Dynamic hazard scanning Sector	The hazard scanning area ahead of the vessel
6	Dynamic hazard scanning Lane	Alarms are generated for objects within the scanning lane
7	Point object highlighting	Point hazards within the scanning area
8	Area object highlighting	Area hazards within the scanning area

Charted hazards

Navigational hazards are always displayed on the **Hazard indicator**. List of charted hazards that generate alarms:

Navigational hazards

1. Coastline

2. Safety contour

3. Isolated underwater dangers

4. Buoys and beacons

5. Obstructions

6. Bridges, if the vertical clearance is less than or equal to the value set in the settings

Important

Alarms are generated only for objects within the dynamic scanning lane.

Hazard highlighting is performed regardless of the Alarm filter settings and safety sector display enabling.

Important

Highlighting of point and area navigational hazards is performed based on the largest-scale ENC located under the vessel’s position.

Monitoring specifics

Bow scanning sector:

• Provides advance hazard detection

• Performs preliminary object highlighting

• Does not generate alarms, only visual warning

Stern scanning sector:

• Monitors the safety of the vessel’s turn

• Especially important when navigating with significant drift

• Useful when proceeding in a narrow channel

Dynamic lane:

• Formed based on the configured safety parameters

• Accounts for the vessel’s current speed and heading

• Generates audible and visual alarms

Warning

Hazard monitoring system alarms must not be ignored. Upon receiving an alarm, immediately assess the situation and take measures to ensure the vessel’s navigational safety.

Monitoring recommendations

Preparation for the voyage:

1. Configure monitoring parameters in accordance with the vessel’s characteristics

2. Set the current vessel draft

3. Select the object filter for monitoring

4. Enable the safety sector display on the chart

During navigation:

1. Monitor highlighted hazards on the ENC

2. Pay attention to the off-scale hazard indicator

3. Respond immediately to audible alarms

4. Analyze the position of hazards relative to the vessel’s course

Safety monitoring:

1. Regularly verify that monitoring settings are up to date

2. Regularly update the current vessel draft in ECDIS settings

3. When navigating in areas with tidal effects, regularly update the water level value and the time of its application

4. When speed or navigation conditions change, revise the parameters as necessary

5. Do not rely solely on automatic monitoring — maintain visual lookout

Tip

Using static forecasting (forecast by distance) provides more stable system operation and lower ECDIS processor load, especially in areas with a limited number of navigational hazards.