Loading/Discharging Sequence

The Loading Sequence module enables the condition of the ship to be determined at intermediate stages of loading and discharging.

The module can also be used to monitor the state of the ship when, for example, transferring ballast at sea.

General page

Loading and/or discharging takes place between two loading conditions, which can be selected using the drop down lists. These loading conditions must be defined beforehand.

Other input on the page enables the output to be customized.

If the Check Visibility or Check Propeller Immersion boxes are checked, then these calculations will be carried out and the results reported for each loading/discharging stage.

If the Check Stability box is checked, then the stability at each stage will be checked using the selected critical stability results.

Similarly, if the Calculate Long. Strength box is checked, then the maximum shear force and bending moments, will be reported for each stage.

The Compartment names options and other longitudinal strength options, refer to the detailed output for each stage, and have the same effect as described for the Loading Condition dialog.

Loading Stages

This page summarizes the loading and discharging for each stage and allows you to Add, Delete and Edit stages.

Clicking the Edit button causes the Loading/Discharging Stage dialog to be displayed.

Loading/Discharging Stage dialog

This dialog is used to load or discharge contents from compartments at the selected stage of the loading/discharging sequence.

The Initial Wt. column contains the compartment contents for the Initial Loading Condition and the Final Wt. column contains the contents for the Final Loading Condition.

Start Wt. and End Wt. columns contain the contents and the start (or end of previous stage), and the end of the stage, respectively.

The amount can either be given as a weight, a percentage of the total compartment volume, or a volume. To load a compartment, the value must be positive. Conversely for discharging, the value must be negative.

Note:
Greyed out columns cannot be altered.

Note:
For the final stage, all columns will be greyed out, as the program determines the amounts to be loaded or discharged to arrive at the Final Loading Condition. This also means that you must add one or more stages, before he can edit the loading sequence.

When you press Edit on the Loading Stages page, the currently selected stage will be displayed. However, you can navigate between stages using the < Previous Stage and Next Stage > buttons.