# Intake Calculation

With the **Intake Calculation** function you can change parameters of a voyage to get an overview of quantities available for cargo at the port calls.

1. Click on a voyage in the list or board to open it in the drawer.
2. At the top right, click on **Functions**<img src="https://content.gitbook.com/content/9WnM8rZV2FJkRruPtTKc/blobs/rfRX0Yhw2gFdiAa9FFpJ/functions_tools_flash_on-24px.svg" alt="" data-size="line">.
3. Select **Voyage Intake Calculation.**

##

## Voyage Header Parameters

At the top, below the vessel-chip and voyage reference, fields for changing the stowage and bunker properties for the entire voyage are displayed.

| **FO ROB** Voyage Start     | Fuel oil at voyage start                   |
| --------------------------- | ------------------------------------------ |
| **LS MGO ROB** Voyage Start | Low-sulphur marine gas oil at voyage start |
| **MGO  ROB** Voyage Start   | Marine gas oil at voyage start             |
| **LS FO ROB** Voyage Start  | Low-sulphur fuel oil at voyage start       |

##

## Schedule Table

A table of all the port calls on this voyage is shown in this section. To change the intake reduction properties per port call, click a row to open a window where you can make adjustments. Some columns are hidden by default, and can be toggled on/off by using the "Customize Columns"-button in the top right corner of the table.

<figure><img src="https://content.gitbook.com/content/9WnM8rZV2FJkRruPtTKc/blobs/F78YOHXRRgMTLJM9VJwr/image.png" alt=""><figcaption><p>The Default View of the Schedule Table</p></figcaption></figure>

| **Port**                          | Name of the port                                                                                    |
| --------------------------------- | --------------------------------------------------------------------------------------------------- |
| **Reason for call**               | Tells you the reason for the port call.                                                             |
| **Arrival**                       | Shows you date and time for arrival at the port.                                                    |
| **Departure**                     | Hidden by default. Shows you date and time for departure from the port.                             |
| **Draft**                         | Intake draft reduction of the vessel. Lower value increases intake.                                 |
| **Zone**                          | Sets the vessel DWT that is used in the calculation.                                                |
| **Water Salinity**                | One of Saltwater/Brackish Water/Fresh Water. Affects the water density.                             |
| **Water Density**                 | Hidden by default. Density of the water at port. Higher value increases intake.                     |
| **Bunker reduction (Arriving)**   | Amount of bunker reduction on arrival in metric tonnes.                                             |
| **Bunker reduction (Departing)**  | Amount of bunker reduction on departure in metric tonnes.                                           |
| **Quantity on board (Arriving)**  | Amount of cargo on board on arrival in metric tonnes.                                               |
| **Quantity on board (Departing)** | Amount of cargo on board on departure in metric tonnes.                                             |
| **Safety Margin**                 | Hidden by default. Safety margin for the draft. Default value is 20%. Lower value increases intake. |
| **Constant Reduction**            | Hidden by default. Intake constant reduction of the vessel. Lower value increases intake.           |
| **Fresh Water Reduction**         | Hidden by default. Intake fresh water reduction of the vessel. Lower value increases intake.        |

##

## Chart

A mixed chart of the calculation results is generated at the bottom. Each port call has multiple graphs to show the reductions, cargo quantity and quantity available for cargo. The charts gets updated automatically when there are changes to the voyage header, port call, or vessel parameters.

Click on the legends at the top of the chart to toggle the display of a graph. Hover the mouse over the chart to inspect the values of each calculation data point.



## Loadline Information

The loadline information table shows data on the voyage [vessel](../../vessels) that might affect the intake. To change these values, you need to edit the vessel in the **Vessels** module in master data.

