Damage Scenarios

If damage stability is to be assessed then you are required to select the appropriate damage scenarios in the deterministic data input dialog, having first defined the details that are appropriate to each in the Associated Damage Scenarios dialog box.

All damage scenarios should be created and edited in the Damage Scenarios node, but can also be accessed through the Deterministic or Probabilistic Stability dialogs, or from any Loading Condition. All damage scenarios are available for any of these calculations, so you only have to enter a specific damage scenario once.

A damage scenario is simply a list of assumed damaged compartments and is independent of any deadweight loading or intact condition. By implication, it is therefore independent of compartment contents in the intact state. The combination of a damage scenario, applied to a loading or intact condition, produces a damaged condition.

There are three different modes of damage available:

1. The vessel is free to attain its natural damaged equilibrium, for which no defining parameters are necessary.

2. As for 1 above, but you supplies the first attempt in the iteration process.

3. The vessel is grounded, in which case you specifies the final equilibrium after grounding. The grounding force is taken as the difference between the intact displacement and the displacement as grounded. This force is assumed to act at the centre of force and is used to correct the GM T due to the apparent rise in KG after grounding.

For each scenario, the damage extent is defined by identifying those compartments damaged, the type of damage to be sustained, and associated extra data specific to that damage type.