### Limitations of the Software

Mathematical modeling of floating offshore structures involves
dynamical analysis of multiple interwoven and complex interacting
hydrodynamic and mechanical systems; the intricacy of this problem
is so profound that the behavior of these systems is not "computable"
in the sense that we compute, for example, the motions and interactions
of celestial bodies. Any attempt to compute analytically the
behavior of offshore structures in the presence of fundamentally
chaotic excitations arising from naturally-occurring wind, waves
and currents is doomed to failure in any truly quantitative sense.
This is because the precise environmental inputs are always unknown
(and unknowable) and because a comprehensive unified dynamical
model of the coupled hydro-mechanical system remains analytically
out of reach. While we are quite capable of predicting to one
*second* the time of closest approach of a comet many years
in advance of its arrival, in the realm of offshore systems
similar precision simply does not currently exist and, due to
the chaotic and fundamental complexity of the problem, such precision
is not likely to materialize in the foreseeable future.

Given these unfortunate realities, the best we can hope for
from available analysis tools, including those offered by SeaSoft,
is a qualitative understanding of system dynamics; using sufficient
care we can possibly make semi-quantitative statistical estimates
of vessel motions and mooring loads that will be of value as *one
component* of a comprehensive design process. No matter how
good our tools might appear to be, nature withholds endless quirks
and twists which can, and occasionally will, conspire to produce
an unsatisfactory and unacceptable result.

**SeaSoft Home**