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In determining the Max Lift, three possibly restricting quantities are calculated:
- IMOS - Max Lift Calculations
- IMOS - Max Lift Calculations
- IMOS - Max Lift Calculations68714792
- 68714792
- 68714792
The Max Lift is taken as the most restrictive of these values.
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| Configuration Flags | |
|---|---|
| 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. |
Other Notes
Unlike the IMOS - Max Lift Calculations 68714792 calculation, this portion of the Max Lift Calculation does not account for possible differences in salinity between the baseline used and the itinerary.
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Following this calculation, the Bunkers and Constants (which are calculated as described in the IMOS - Max Lift Calculations 68714792 section) are subtracted to get:
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If we fail to get a deadweight from the Deadweight Table calculation (for one of the reasons given under Notes in the relevant section), we calculate the max deadweight based on the vessel’s TPC. The equation for this method depends on whether the salinity on the itinerary line matches the baseline salinity we are using for our Max Lift Calculation (see the IMOS - Max Lift Calculations 68714792 -> Deadweight section for information on baselines).
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Consider the example we have from the IMOS - Max Lift Calculations 68714792 section. Recall that our vessel has a TPC of 70 MT/CM and adjusted draft of 14.6875 M. Moreover, we have:
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Salinity Ratio = (1.025 kg/l - 1.000 kg/l) / (1.000 kg/l) = 0.025
Max Deadweight Given Draft Restrictions = (((14 M − 14.6875 M) * 70 MT/CM * 100 CM/M) + (77,812.5 MT) − (0.025 * 11,000 MT)) / (1 + 0.025) − 800 MT = 70,151.2 MT
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