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  Make sure Watertype$ is determined by VR: VR User Only, as the user should provide the information concerning the water type.

We repeat the process for the other relation: 

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Both relations are now connected to the corresponding watertype by means of the value of the string Watertype$. Note if Rho is needed in the calculation progress, Quastor will note that the watertype is needed and will ask the user for this value (because it is assigned VR User Only).

TIP: By selecting a parameter in the knowledge base and then double clicking the box below the knowledge base tree, the relations defining that particular parameter are visible (figure 8).
Moreover, when you select a relation in the knowledge base, and double click that box, the parameters that can be calculated by the selected relation are shown.
When single clicking the box, all connections to the parameter or relation are shown. See also information on the Knowledge Browser.

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  Provide references, dimensions and determined by values for Cb and DISP. Cb has no dimension (-), DISP should be in tons (t). Just press ok if Quaestor notes that tons is no base dimension (kg), it is just to inform you. We covered this by dividing DISP by 1000. The determined by values should be VR: VR User Only for Cb, and SYS: System/Equation for DISP, as the block coefficient is input and the displacement is determined by a relation.

8    Creating a solution

Let's perform our first Quaestor calculation. A solution is always determined by one or more Top Goals. A top goal is a parameter (or object) that is your final calculation target, in this tutorial it's the displacement of the ship. 

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