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hydrostatics properties based on the extreme form associated to the displacement instill water. The
function of CAE module is to provide the analysis for kinematics and dynamics motions. Interface to
CAWCAD/Simulation system such as SIKOB and ENVISION system is provided.

2 SBD TECHNOLOGIES
SBD is a new paradigm in which the total definition of a product is conceived, designed, manufactured,
tested, trained, and supported for its useful life-cycle in a virtual environment.
In ship design, the SBD can have a powerful impact on the overall life-cycle of product development
activities. By implementing the SBD system based strategies and techniques, the behavior ofproducts
and process characteristics can be simulated in a Concurrent Engineering(CE) or Integrated Product
and Process Design(1PPD) environment.
In the development of new concept ship, the SBD system will permit detailed evaluation of product
and process design early in the life-cycle, reducing expensive surprises later during manufacturing and
operational service. Also, it provides realistic operator interaction with the productduring the
requirement and design process.
The SBD in ship design started in U.S. Department of Defense. Several prototype projects in navy
ships have been performed to apply the SBD concepts through the Defense Advances Research Project
Agency(DARPA) and its consecutive works, which was planned to maintain concurrent engineering
design concepts in order to reduce the period of design and manufacturing,to economize, and to
upgrade the quality of ships[l]. The well-known cases are U.S. Navy's LPD 17 simulation, General
Dynamics Electric Boat Division(GDEB)'s NSSN submarine[2], and Gulf Coast Region Marine
Technology Center(GCRMTC)'s Mobile Offshore Base(M0B) projects[3]. University of Strathclyde's
safety simulations of RO-RO ferry ship and University of Michigan's ship motion simulations are
typical examples in academic fields.
In Korea, SBD research has gained some interests in the commercial ship building industries and naval
ships. Yet, the progress is far behind than the expectation.

SBD face several technological problems. Firstly, High Performance Computing(HPC) and
Highperformance Visualization(HPV), as well as high speed networking, are already under
development program and it is expected that emphasis on advancing these technologies will continue.
Secondly, the integration of CAD/CAWCAM is a critical element of the SBD system's capabilities as
related to ship design in which the system must cope with the full spectrum of ship design engineering.
Thirdly, software standards and data exchange standards are needed for SBD to fully assimilate and
utilize large number of existing codes[4][7].

3 SIMULATION OF SHIP STABILITY ON CONTAINER LOADINGKJNLOADING

In this research, a system for assessment of ship stability for container loading/unloadmg was
developed using SBD technologies. For the development of assessment system, the geometric models
of the high-speed medium size container ship, port, and facility are implemented and interfaced to the
CAE programs[5][6].
The Configuration of the system for container loading/unloading is shown in Figure 1.

3.1 Graphical User Zntefluce
Graphical User Interface(GU1) is adopted to the commercial geometric modeling and simulation
systems in order to increase the flexibility and efficiency of system.
GUI is designed considering the following items.