General HydroStatics
Ship Stability Software
Command of the Week
(New or interesting aspects of GHS that you may not know about)


Normally the RAH command scales its plots as large as possible to minimize whitespace. But that means a series of RAHs runs would be plotted at different scales when their maximum righting arms differ significantly... making them difficult to compare at a glance.

This can be fixed using the RAH /SIZE:max parameter by specifying the same maximum (and optionally minimum) righting arm scale values. An even easier way to handle this is to specify /SIZE:* on subsequent RAH runs so the scale sizes from the first RAH plot are reused. For example:

DR 12 | SO WE LCG | VCG 8
CRT FLOODER 75 14 20

In this example, the /GRAPH:ONLY parameter omits redundant table output (see COW194) and the /STOP:FLD parameter stops subsequent RAH runs when the downflooding point immerses, preventing plots from reaching their normal maximum righting arm and heel values:

But when /SIZE:* is present, the stopped plot remains nicely scaled the same as the preceding original:

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