How to get a GLM ... starting with nothing -
Basic Configuration Instructions
First, we need a computerized model of your vessel. If it was designed
after about 1975 or you have had an inclining recently, chances are
good that some kind of computer model already exists. Check with the designer
or the naval architect who did the inclining. If you are unable to locate a
computer model, the next best thing is to locate the lines and general
arrangement drawings. Any naval architect can create the computer model from
these drawings. If there is no computer model and no drawings it comes down
to having to take measurements off of the hull and interior bulkheads. There
are services which do this using laser equipment that produce accurate
computer models directly.
Second, you need a Trim and Stability book showing the current light-ship
weight and center of gravity. If this is not available (if your vessel
is not required by law to have one) the light ship weight and CG can be
derived by doing an inclining experiment. Normally a naval architect
would do this. However it is possible to do essentially the same thing
using the GLM directly if you have port and starboard tanks large enough
to induce a few degrees of heel and you have an accurate way of measuring
the heel angle.
The first person to contact about getting GLM for your vessel is the
naval architect who made the trim and stability book. If that is impossible
or impractical for any reason, another naval architect in your area should
be able help you out. If there is no such person or if you cannot find one
familiar with GLM, you can contact
, the GLM software manufacturer.
Creative Systems, Inc.