Day: 29 September 2022

ShipMo3D Update

After extensive beta testing in partnership with Defense Research and Development Canada, ShipMo3D version 4 is now available. So what are some of the new capabilities in version 4?

Reduce noisy hydrodynamic results with automatic mesh refinement at the static waterline

Hydrodynamic loads can be sensitive to details resolved at the waterline of the ship model. The result can be noisy loads or motions at some frequencies that aren’t likely in reality. Automatic mesh refinement at the waterline increases the accuracy of resolving hull pressures across a range of wave conditions and cuts back on noisy results. Automatic mesh refinement applies to hulls created with hull lines or with a custom mesh directly imported to the software.

ShipMo3D now automatically refines the numerical mesh at the waterline between the dry hull (green) and wet hull (yellow) regions for increased accuracy and numerical stability

Compute the effect of active stabilizers

Active stabilizers are small but can have a significant impact on vessel motion. But stabilizer form and control coefficients need to be specified to see how they work. Use a simple interface to set exact stabilizer parameters and rapidly calculate the resulting influence on ship response.

Course and speed control in maneuvering simulation

In any maneuvering simulation, ship heading, speed, and course can drift without some active intervention from the rudder and propeller. Drift in course and speed can make it difficult to compare with other seakeeping load cases or follow a specific track. In previous versions of ShipMo3D, only heading control was possible with rudder control. Now both course and speed control are possible in maneuvering simulation.

Lid method to eliminate irregular frequencies

Irregular frequencies can unexpectedly produce wave effects inside the ship during the numerical solution process. These can create unrealistic ship motions at particular frequencies. In previous versions of ShipMo3D, manual inspection or detection to filter out specific wave frequencies was one way to deal with the problem. But this could lead to losses of hydrodynamic information. Lid methods suppress all wave effects inside the ship hull and eliminate irregular frequencies automatically while maintaining more hydrodynamic information to drive ship motion.

Rapidly review version 4 workflows with updated video tutorials

Learning new functionality can take time to figure out on your own. Speed up the process by checking out a series of new video tutorials showing specific software workflows for completing the most common tasks.

New sample project files to help explore the software

Learning any new software tool can be daunting and take a lot of time. Sample projects accelerate the learning process significantly and give you a good way to experiment with features and functionality you’re unfamiliar with. We’ve added new sample project files that include the KRISO Container Ship (KCS) and two projects from the ShipMo3D validation report: the Generic Frigate active stabilizers and test tank barge with slosh tanks.

New virtual training resources

It can be overwhelming to learn software that has many inputs and functions like ShipMo3D. For those who are newer to seakeeping and maneuvering analysis, there are also training modules to help provide context for working with any ship motion analysis software. Contact if you’re interested in commercial virtual training options with DSA Ocean engineers.


ShipMo3D v4 is now available for download. Contact if you need your download credentials.

Button to software download page


Click below for a detailed technical list of additions, changes, and resolved issues for ShipMo3D: