## Sensor Data (Sentences)

Records of data received from navigational sensors. Data is recorded both in parsed and raw format. Only data from sensors with {doc}`recording enabled </sections/sensors/index>` is written to the logbook.

| Menu path |
|-----------|
| {{ menu }} → {{ menu_logbook }} |

### Interface

![Raw data interface](images/Log_Sentences_1.png)

### Records and display

The table contains records of all received data "as is", without filtering. Damaged data is also recorded.

```{attention}
Recording navigational sensor data over an extended period may occupy significant disk space on ECDIS. It is recommended to {doc}`enable recording </sections/sensors/index>` of sensor data for subsequent failure analysis by the manufacturer.
Recording of navigational sensor data is not mandatory and is disabled by default.
```

### Table configuration

Configures column display in the table. Does not affect data recording.
![Settings](images/Log_Sentences_2.png)

### Viewing record contents

To view:

1. Select a record in the table.
2. Double-click the record (double-tap on a touch screen).

![Record details](images/Log_Sentences_3.png)

The window contains the recorded sensor data value "as is" or in decoded form.
The viewer is intended for data analysis by a qualified service engineer.

