## Manual Update

```{note}
**Manual Update** is a standalone option. The availability of the **Manual Update** option depends on the ECDIS license.
```

Manual Update is designed for applying corrections to ENCs based on Notices to Mariners. Manual Update makes changes within the ENC cell.

| Menu path |
|-------------|
| {{ menu }} → {{ menu_user_chart }} → **Manual Update** |

```{important}
To display manual updates on the chart, enable the **Manual Updates layer** in {doc}`**Operational Settings** </sections/graphical-user-interface/operational-settings/index>`
```

```{warning}
When applying manual updates, the display period of manual updates must be considered — 3 months.
After 3 months, manual ENC updates will be automatically removed.
```

Available functions:

- **History** — view and edit manual update objects and user objects.
- {doc}`**User chart** </sections/instruments/user-objects/index>` — add user objects.

Selection:
![Update type selection](images/dropdown-menu.png)

### Selecting cells for update

#### ENC cell table

```{warning}
The **table** contains a list of **ENC cells** of all scale levels that fall within the **chart window**.
```

![ENC cell table](images/Manual_Update_1.png)

| № | Element | Description |
|---|-----|----------|
| 1 | ENC cell list | When the chart is panned in the main window, the cell list updates |
| 2 | Go to cell | Centers the cell in the main window |
| 3 | Select | Select objects to add to the ENC — add update objects |
| 4 | Refresh | Refresh the ENC list. Press after panning the chart in the main window |
| 5 | From ENC | Press to select chart objects for editing |

#### Adding an object

Adding a manual update object is performed sequentially in several steps.

#### 1. Select a cell

Select a cell in the table and press **Select**.

A list of cartographic objects available for adding will open.

![Objects list](images/objects-list.png)

#### 2. Select the object type

Select the object type — a list of objects of the selected type expands.

The list contains all object types available for adding to the ENC.

![Object types](images/object-types.png)

#### 3. Select an object

Select an object from the list.

Fill in the object properties and attributes.

In the main window, the ENC cell being updated will be highlighted with a blue frame.

![Object attributes](images/object-attributes-selected.png)

#### 4. Select object geometry

Select the object geometry (depends on the object):

- **Point** — for adding point objects: buoys, wells, lighthouses, etc.
- **Area** — for adding areas, regions, land portions, etc.
- **Line** — for adding linear objects, fairways, recommended tracks, limit lines, etc. (the line may be single or composite, polyline)
- **Circle** — for adding circles by specifying the circle radius and center coordinates

![Geometry types](images/geometry-types.png)

#### 5. Add attributes

Press ![Add attributes](images/add-attributes-icon.png) to open the attributes list.

The attributes list contains only the attributes available for the object.

![Attributes list](images/attributes-list.png)

#### 6. Fill in attributes

Fill in the required object attributes.

![Filled attributes](images/attributes-filled.png)

#### 7. Add child objects

If necessary, add child objects.

Child objects inherit the properties of the parent object.

![Child objects 1](images/child-objects-1.png)

![Child objects 2](images/child-objects-2.png)

![Child objects 3](images/child-objects-3.png)

#### 8. Place on chart

- **Using the cursor** — point to the position on the chart
- **By entering coordinates** — enter exact coordinates manually

![Object placement 1](images/place-on-map-1.png)

![Object placement 2](images/place-on-map-2.png)

```{tip}
Object points can be placed on the chart using the cursor, then adjusted in the input fields.
```

#### 9. Object display

Enable/disable the **Display on chart** checkbox to show the object on the chart.

The object will be displayed on the chart, within the `scamin` attribute limits.


Save the object.

![Object display settings](images/object-added.png)

![Object on chart](images/object-on-map.png)

```{important}
**Manual update history for the selected cell will be reflected in the History.** Making changes to an update object is treated as a new update.

**Analyzing received automatic updates for matches between manual and automatic updates is the responsibility of the navigating officer.**

All manual updates are reflected in the {doc}`ENC collection report </sections/enc-collection-management/enc-collection-report/index>`.
```

```{warning}
When adding objects, the `Source of update` and `Author of update` properties must be filled in — specifying the update source and the author who performed the update.
```

### Editing a chart object

#### 1. Select mode

Select **Manual Update** from the dropdown list.

![Objects list for editing](images/edit-objects-list.png)

#### 2. Select an object

Press **Select on chart** to select an object on the chart. Point to the object to edit with the cursor.

#### 3. Open for editing

Select the object in the list — press ![Edit icon](images/edit-icon.png).

![Object selected for editing](images/object-selected-for-edit.png)

#### 4. Apply the update

Fill in the necessary object properties and attributes.

The same editing parameters are available as when adding an object.

![Filling attributes during editing](images/edit-attributes-filled.png)

#### 5. Save changes

Press **Save**.

All changes are documented in the history.

![Saving changes](images/save-changes.png)

### Deleting objects

To delete manual update objects, perform the following steps.

#### 1. Select delete mode

Select **Delete objects** from the list of objects available for editing.

#### 2. Select an object to delete

Select the object to delete on the chart or from the object list.

#### 3. Confirm deletion

Confirm the deletion.

```{important}
**Deleted manual update objects are recorded in the change history**, but cannot be restored through the editing interface.
```

### Change history

#### 1. Opening history

Select **History** from the dropdown list.

![Change history list](images/history-list.png)

**History management features:**

| Function | Description |
|---------|----------|
| **Cell list** | The list contains all cells to which manual updates have been applied |
| **Edit and delete** | Any manual update object in the list can be edited or deleted |
| **Filter** | For convenient searching, use **Filter**. Allows filtering updates by various criteria |
| **Calendar** | To select updates by application dates, use the calendar. The table will show only cells updated within the selected date range |

### Manual update features

#### Types of changes

- **Add** — create new objects on the ENC
- **Edit** — modify existing objects
- **Delete** — remove objects from the chart

#### History and reporting

All manual update actions are recorded:

- All changes are logged in the update history
- Changes are reflected in the ENC collection report
- Searching and filtering by dates and cells is available

#### Interaction with automatic updates

When working with manual updates, interaction with automatic updates must be considered:

- The navigating officer is obliged to analyze matches between manual and automatic updates
- If discrepancies exist, a decision on priority is required

```{warning}
**Manual update is an official document** and must correspond to information from Notices to Mariners. If discrepancies with automatic updates are detected, an analysis must be conducted and a justified decision made. Priority should be given to automatic updates.
```

```{tip}
**It is recommended to keep detailed records of applied manual updates**, including the information source (Notice to Mariners number and date), the date of application, and the responsible person. This simplifies subsequent analysis and verification of updates.
```
