Description
Purpose
This excel app helps the user estimate the amount of cargo loaded/unloaded at a port based on draft difference before and after the operation (arrival and departure)
The calculations are based on empirical relations and estimates/assumptions (see section on Assumptions and Limitations)
Directions for Use
All the cells which require input are in the Worksheet ‘Inputs’ and have blue background.
Please fill only input cells, i.e., ones with blue background. Leave the other cells untouched, as they are output cells
Assumptions and Limitations
LWL is assumed to be 97% of LOA
Applicable for bulk carriers
Fuel and Ballast Quantities estimation:
| Loading Condition | Fuel as % of DWT | Ballast as % of DWT |
| Loaded Departure | 5% | 5% |
| Loaded Arrival | 1% | 5% |
| Ballast Departure | 10% | 90% |
| Ballast Arrival | 2% | 98% |
References
1. Ship Design for Efficiency and Economy, H.Schneekluth and V.Bertram, 2nd Ed
Version History
V0.0 12-May-22 First Issue
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