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Feature 5
simply the distance from the side shell to automatically produces a compact report application program than a wizard, as the
the wing bulkhead? What if the side shell is presenting all of the essential information term is commonly used. Though written
not a nice flat wall? What if the bulkhead is on which the computations are based; yet entirely in GHS command language,
sloping in various directions, has knuckles, it provides options for getting detailed DAMSTAB2 operates like an independent
or is stepped? What is a fair penetration notes that describe every step of the program. Its job is to automatically prepare
value to use in those cases? process. the input files for performing damage
What should, in theory, be a highly GHS alone, without the wizard, stability calculations and then to run
automated task can become demanding, provides procedures which implement the calculations. It accomplishes this by
not only for the software designer but for several versions of the probabilistic launching a separate session of GHS that
the software user. Designing software that damage method, including MSC.194(80). runs off the inputs it has prepared. It can
both automates the task and avoids hiding Traditionally, the user would prepare a run launch and keep track of more than one
decisions the user should be overseeing is file laying out the commands for defining session at a time - one performing the
a challenge. subdivisions, setting up load conditions, calculations for starboard-side damage and
An example of how this challenge can and executing the appropriate probabilistic the other for port-side damage, for example.
be met is the new damage-stability wizard calculations. For passenger ships under For preliminary design calculations it is
that runs in GHS. It can automate almost MSC.194(80) the user would also have a great time-saver. But it also provides the
all aspects of the task, so that setting up a to write a macro to perform the survival means of optimising the calculations to take
run for calculating the subdivision index probability calculation, including heeling advantage of special design features while
on a passenger ship using the MSC.194(80) moments and intermediate flooding. The providing detailed reports to answer any
method can be done in just a few minutes. Damage Stability wizard takes over all of questions about the manner in which the
Yet it provides the naval architect with a these tasks, yet it provides for additional calculations were done.
means of refining the procedure to take control by means of optional inputs. For more information on DAMSTAB2, go
advantage of special features of the ship Known simply as DAMSTAB2, this to the contact Creative Systems, Inc website
design. In keeping with this philosophy, it damage stability wizard is more like an at www.ghsport.com. NA
The Naval Architect February 2008 103
NA Feb 08 - p101+103.indd 103 05/02/2008 09:56:01
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