## Chart Collection (Data Set)

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

**Functions:**
- View information about ENC data sets
- Install Scheme Administrator root certificates
- Install ENC cell permits
- Install and remove ENC data sets
- Install updates
- View the installation and removal log for ENCs, update sets, certificates, and cell permits
- View and export summary and full reports on the ENC collection status

All operations with ENCs, certificates, licenses, and updates are recorded in the **Installation Log**.

![Chart collection window](images/ENC_Coll.png)

### Chart Collection Window Elements

| No. | Element | Description |
|---|---------|----------|
| 1 | Named chart set | ENC data set name |
| 2 | Cell list of the set | Expanded list of cells |
| 3 | Enable/disable frame display | Display frames of the set or individual cells |
| 4 | Enable/disable cell display | Display cells of the set or individual cells |
| 5 | Positioning | Navigate to the selected cell |
| 6 | Delete | Delete the selected cell set. Individual cells cannot be deleted |
| 7 | ENC | Opens the **ENC Installation** window |
| 8 | Permit | Opens the **ENC License Installation** window |
| 9 | Certificates | Opens the **Certificate Installation** window |
| 10 | Installation Log | Opens the **Installation Log** |
| 11 | Reports | Opens the chart collection reports window |

### Requirements for Installing ENCs

To install ENCs, the following is required:

1. Install a valid Scheme Administrator certificate `IHO.CRT` (supplied with the ENCs or download from https://iho.int/en/enc-data-protection)
2. Install ENC cell permits (Cell Permit)
3. Install the ENCs

```{important}
Any operations related to ENCs (installation or removal of Scheme Administrator certificates, ENC cell permits, installation of ENC cells or updates to cells, removal of ENC data sets) are only possible with **Master** privileges. In **BackUp** mode, ENC operations are unavailable.
```

```{tip}
When installing open (unencrypted) charts, prior installation of the root certificate and ENC licenses is not required.
```

### Installing/Removing Scheme Administrator Certificates

**Installing certificates:**

1. Insert the **USB medium** with the data sets into the ECDIS USB port

2. | Menu path |
   |-------------|
   | {{ menu }} → {{ data_set }} → Certificates → Find Certificates → Install |

![Certificate installation dialog](images/Install_Certificate.png)

3. Upon successful installation, a notification **"Certificate installed successfully"** will appear at the bottom of the panel

4. The certificate status will change to **"Installed"**

5. Return to the **ENC Collection** — press **Back**

```{note}
The installation result is added to the **Installation Log**.
```

```{tip}
The list of installed certificates can be viewed in the settings on the {doc}`tab </sections/system-settings/license-certificates/index>` **Certificates/Permits**.
```

```{important}
ECDIS supports installation of SA certificates packaged in a zip archive separately or within a Dataset zip archive.

Installation of SA certificates from nested second-level archives is not performed. To install certificates, the nested files must be extracted first.
```

**Removing certificates:**

| Menu path |
|-------------|
| {{ menu }} → {{ settings }} → System → Certificates/Permits → Certificate → Delete |

{doc}`Removing root certificates </sections/system-settings/license-certificates/index>`.

A notification will appear at the bottom of the panel and an entry will be made in the **Installation Log**.

### Installing/Removing ENC Cell Permits

**Installing ENC cell permits:**

1. Insert the **USB medium** with the data sets into the ECDIS USB port

2. | Menu path |
   |-------------|
   | {{ menu }} → {{ data_set }} → Permit → Find Permits → Install |

![License installation dialog](images/Install_Cell_Permit.png)

3. Upon successful installation, a notification will appear at the bottom of the panel

4. Return to the **ENC Collection** — press **Back**

```{note}
If errors occur, the log will indicate errors in accordance with IHO S-63 (see section 5.7). The navigator should review the error and act in accordance with the manufacturer's recommendations.
```

```{important}
ECDIS supports installation of ENC cell permits packaged in a zip archive separately or within a Dataset zip archive.

Installation of ENC cell permits from nested second-level archives is not performed. To install ENC cell permits, the nested files must be extracted first.
```

```{tip}
**License management recommendations:**

When receiving an update set for cells already installed in ECDIS, it is not recommended to reinstall the cell permits. Repeated installation of permits for the same cells will significantly slow down the ENC installation process and may eventually make it impossible to decrypt the cells.

If the error {doc}`**"SSE 21"** </sections/enc-collection-management/sse-messages/index>` occurs, it is recommended to delete the ENC permits from ECDIS, reinstall the ENC permits, and retry the ENC cell installation.
```

**Removing licenses:**

| Menu path |
|-------------|
| {{ menu }} → {{ settings }} → System → Certificates/Permits → Delete |

{doc}`Removing ENC cell permits </sections/system-settings/license-certificates/index>`.

```{warning}
When licenses are removed, the corresponding ENC cells will become unavailable for display and updates cannot be applied to them.
```

### Installing/Removing ENCs

**Installing ENCs:**

1. Insert the **USB medium** with the data set into the ECDIS USB port

2. | Menu path |
   |-------------|
   | {{ menu }} → {{ data_set }} → ENC → Find ENC → Select → Install |

![ENC installation dialog](images/enc-install-dialog.png)

3. In the dialog, select from the drop-down list or enter the name of the set into which the chart(s) should be installed. Press **Install**. The new chart set name must be entered using **only Latin letters and/or digits, without spaces**

![Data set selection](images/dataset-selection.png)

4. The installation result will be displayed as a notification at the bottom of the window and recorded in the **Installation Log**

![ENC installation result](images/Install_Logbook.png)

5. Return to the **ENC Collection (Data Set)** by pressing **Back** twice

The new set will appear in the **ENC Collection (Data Set)** window. To view the ENC list, double-click the set row.

```{important}
ECDIS supports installation of ENCs packaged in a Dataset zip archive.

Installation of ENCs from nested second-level archives is not performed. To install ENCs, the nested files must be extracted first.
```

**Removing ENCs:**

| Menu path |
|-------------|
| {{ menu }} → {{ data_set }} → Select Dataset → Delete |

1. In the dialog, confirm the action — press **Delete**

![Data set deletion dialog](images/delete-dataset-dialog.png)

![Deletion confirmation](images/delete-confirmation.png)

2. The deletion result will be displayed as a notification at the bottom of the window and recorded in the **Installation Log**

```{important}
ECDIS is supplied with a pre-installed set of overview charts: OVERVIEW_15, `OVERVIEW_50`, OVERVIEW_RIVER.

Deletion of overview ENCs is **not supported**!
```

```{tip}
**ENC management recommendations:**

- Regularly {doc}`create backups </sections/basic-operations/backup-copies/index>` of important chart sets
- Monitor the currency of installed updates
- {doc}`Check </sections/routes/route-enc/index>` license status before planning voyages
- Use the search function to quickly locate ENCs
```

```{note}
**ECDIS** supports operation with **AIO**.

ECDIS treats AIO cells as ENC cells: installation of AIO cells, updates, and removal of AIO are performed in the same way as for S-57 cells.
```