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This is a Key Topic, with high value for all users.
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- On the Voyage Estimate menu, click Auto Calculate by Max Lift Qty. The following information is used:
- From the Vessel form:
- Capacity fields vary with Type Code, for example:
- Type Code T (Tanker): Capacity M3 or Capacity Bbl
- Type Code B (Bulk): Capacity (Bale) or Capacity (Grain)
- Vessel DWT (taking into account the season and the salinity of the berth)
- Constants and Safety Margins
- Capacity fields vary with Type Code, for example:
- Bunkers ROB
- Cargo Name
- Cargo Class Dry or Unspecified: Stowage Factor (M3/MT or Ft3/MT)
- Cargo Class Liquid: Density (API/Specific Gravity)
- Cargo Class Dry: The Capacity Basis default is Grain, but you can change it on the Cargo Name form.
- From the Vessel form:
- Quantities appear in Voyage Estimate Details view:
- On the Draft/Restrictions tab, in the Cargo and L/D Qty fields.
- In the Cargoes grid, in the CP Qty field, depending on configuration flags.
- You can override the calculated lift value.
To recalculate, clear the field and then press Enter. The new value appears blue.
To see the inputs to the calculation, on the Draft/Restrictions tab, hold your mouse pointer hover over the value in the Max Lift field.
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- Vessel DWT, SW Summer Draft, and TPC/TPI on the Vessel form.
- Information entered on the bottom half of the Vessel DWT/Draft tab.
If an exact baseline does not exist (meaning Deadweight, Draft, or TPC is missing) backups are used depending on the relevant loadline:
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Sea Constants, Fresh Water, Other Constants, and Bunker Margins come from the Vessel Consumption tab:
- In the In Port Consumption Table (Per Day) grid, the Margin column.
- Under Variables and Safety Margins, Constants Sea, Fresh Water, and Others fields.
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| Configuration Flags | |
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| Exclude Safety Margin from Max Lift Calc | When this flag is enabled, we do not include the Bunker Margins when calculating Bunkers and Constants. So, in our example, we would have 800 MT – 110 MT for Bunkers and Constants. The Max Available Deadweight would therefore equal 77,122.5 MT. |
| Enable Default Ending Rob Constants | When this flag is enabled, an Ending ROB Margin field appears on the Vessel Consumption tab. If we do not have initial bunker quantities, then we add on this constant. So, in our example, if we had no initial bunkers, and this constant had a value of 100 MT, Bunkers and Constants would be 800 MT + 100 MT = 900 MT. The Max Available Deadweight would therefore equal 76,912.5 MT. |
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