All the above datasheets, except for the integrated values, may be graphed and displayed in the graph window:

§   MSI

§   RAO

§   CG Spectra

§   Remote Spectra

§   Global Hydrodynamics

§   Section Hydrodynamics

To select the desired graph, make the graph window the uppermost window by either clicking in the window or selecting Graph from the bottom of the Window menu.

The desired datasheet may now be selected from the Window menu: select Graph and drag right to display the available graphs.

Once a graph has been chosen, the various data sets in the graph may be turned on or off. To do this, select Graph Options from the Display menu. The following dialog will be displayed. If the current graph is of the response spectra, it will not be possible to change the frequency scale.

§   Turn on the desired data sets; and

§   Select the desired horizontal axis format.

The section data (Sectional forces and Sectional hydrodynamic coefficients) may be plotted and displayed against frequency (for a single section) or against section position (for a single frequency). In addition it is possible to display all the data in the Results datasheet, but in this case the data will not be plotted. To change the format, choose Section Data from the Display menu:

To plot data for a single section, select the Section radio button and type the number of the section for which you want the data in the Current section edit box. To plot the variation along the length of the hull, for a single frequency, select the Frequency radio button and type the frequency of interest in the Current frequency box. To display all the data, select the Display all data – note that, in this case, the data will be displayed in the table only and not in the graph.

Sections start with number 1 at the bow and increment towards the stern. In Plan or Profile views, the station numbers are displayed once the hull has been measured.

Some of the graphing options may be accessed more quickly using the Graph toolbar:

Use the combo box to select which data you would like to graph and the Graph Options button,  to edit which lines are shown and the horizontal scale.

The Polar Window displays iso-response contours. The global vessel response to be plotted is selected from the drop-down list in the toolbar. At least two different speeds and two different headings (which are separated by less than 180 degrees) must have been analysed. Because the polar plots require the speeds and headings to be ordered, these will be sorted at the start of the analysis.

The spectrum for which the results are plotted is selected from the Results toolbar. The concentric circles correspond to the range of speeds covered and the radial arms the vessel heading; stern waves (0 degrees) is at the top and bow waves (180 degrees) is at the bottom.

 View a video showing how to create Polar Plots in Seakeeper.