Purpose

INS receives data from various navigation sensors (GNSS, gyrocompass, log, echo sounder), performs processing, majority voting, evaluates data reliability, generates or relays navigation data, and performs simple dead reckoning and dead reckoning with total drift compensation.

The Integrated Navigation System (INS) is the source of the following data:

• vessel coordinates

• vessel heading

• vessel speed

• speed generation mode

• course over ground

• speed over ground

• depth

• time

When configuring sensors: Position, Heading, Speed, Depth, the connection to INS must be configured in accordance with ship documentation.

INS transmits a special sentence $INNSR (Integrated Navigation System Status Report), which contains:

• Data integrity information (Integrity) — reliability indicator for each navigation parameter

• Data quality indicator (Quality indicator) — assessment of data quality from the source

• Speed generation mode (Speed mode) — method of determining vessel speed (Auto, Estimated, Manual)

Note

The $INNSR sentence must be received by ECDIS for correct operation of the data quality monitoring system.

ECDIS, receiving data from INS, generates warnings and cautions about the status of data received from INS. Additionally, data statuses are displayed in the **Navigational Panel**.