The lube oil overview of a vessel shows **one month at a time**: what was received and consumed
in that month, and what the stock was. You can page back month by month to look at earlier
periods without leaving the overview.

## How to open it

1. Open the **Lube Oil Reports** module.
2. In the tree on the left, open **Lube Oil → Overview** and select the **vessel**.
3. The vessel's **Lube Oil Overview** opens on the right, showing the **current month**.

Alternatively, select the **Overview** entry itself: the card **Current Stock by Vessel** lists
the whole fleet with its stock, stock value and a coloured bar for the remaining supply.
Clicking a vessel name opens that vessel's overview.

## Paging between months

Directly above the inventory table there is a navigation line:

Element | What it does {class="compact"}
---|---
**< May 2026** | Goes one month back.
**June 2026** | The month currently displayed, shown in bold in the middle.
**July 2026 >** | Goes one month forward. Only offered while you are looking at a past month.
**(back to current month)** | Jumps straight back from wherever you are. Also only offered while you are looking at a past month.

The heading above the table names the same month, for example *Lube Oil Overview - MV Example -
June 2026*, so it is never in doubt which period the figures belong to.

You can page back up to **five years**. Once that limit is reached, the link to the previous
month is no longer offered.

## What the table shows

These columns are shown for **every** month:

Column | What it shows {class="compact"}
---|---
Type | The lube oil type
ROB last month | The stock at the end of the month before the one displayed
Received in ltr. | What was bunkered in the displayed month
Consumed in ltr. | What was consumed in the displayed month
ROB current month | The resulting stock

These columns are shown **only in the current month**:

- **current price in USD**
- **Price per ltr./kg**
- **Supply** - the coloured bar with the estimated months of supply left
- the **Correct** link that appears next to a negative stock

The reason is that price, value and supply always describe the **stock as it is right now**,
not the stock of a past month. Showing them next to the figures of an earlier month would give
a misleading picture, so they are left out there.

!!! Note on the column heading
**ROB current month** keeps this heading also when a past month is displayed. In that case it
shows the stock at the **end of the selected month**, not today's stock.
!!!

## How the figures are counted

- **Current month**: from the first of the month **up to today**.
- **A past month**: the **complete** month, from the first to the last day.

## Correcting a negative stock

If a stock figure turns negative - for example because a consumption was recorded that the
system has no matching receipt for - the line shows a **Correct** link at its right-hand end.
This link only appears in the **current month**.

1. Click **Correct** in the line with the negative stock.
2. The dialog **Lube Oil - Exception Report** opens.
3. Enter the **Correction Quantity**, the **Price** and the **Currency**, and describe the
   reason under **Explanation**.
4. Click **Save**.

The correction is documented with your explanation, so it stays traceable why the stock was
adjusted.

## Please note

The overview itself is **read-only**. Receipts and consumption are still recorded in the usual
places; paging through the months only changes what is displayed. The only entry made from
this screen is the stock correction described above.

*[PO]: Purchase Order  
*[AZA]: local folder
*[(PO]: Purchase Order  
*[RQ]: Requisition  
*[(RQ]: Requisition  
*[RfQ]: Request for Quotation  
*[(RfQ]: Request for Quotation  
*[SO]: Service Order  
*[(SO]: Service Order  
*[SQ]: Service Requisition  
*[(SQ]: Service Requisition  
*[SRfQ]: Service Request for Quotation  
*[OoB]: Open on Board  
*[(OoB]: Open on Board 
*[ART]: Average Running Time (operation hours per day) 
*[MC]: Master Contract
*[ADS]: Advantage Database Server (database engine used in previous versions of the ZeeBORN software)
*[.replic]: file extension for replication files (aka data transfer files)