Seakeeper

The Seakeeper hydrodynamic and seakeeping analysis program is able to provide fast, reliable calculation of vessel response and seakeeping characteristics for many types of Maxsurf designs in a variety of sea states.
Seakeeper provides designers with the tools necessary to quickly predict the seakeeping performance of Maxsurf designs.

It takes advantage of the power of modern desktop computers to bring seakeeping prediction and analysis tools within the reach of all naval architects and designers. It is now possible, in a few seconds, to read in a Maxsurf design and calculate the vessel's seakeeping characteristics. Seakeeper is ideally suited to the comparison of the seakeeping characteristics of design alternatives during initial design.
As with the rest of the programs in the Maxsurf suite, the hull geometry required for the seakeeping analysis is read directly from the trimmed Maxsurf NURB surface model. This eliminates the need to prepare batch or offsets files. In addition, all functions within Seakeeper are performed using a graphical multi-window environment consistent with the other programs in the Maxsurf suite.
Once the Maxsurf design file has been loaded into Seakeeper, the user specifies the vessel speeds, wave headings and spectra to be analysed; remote locations for the calculation of relative and absolute motions, MSI (motion sickness incidence), MII (motion induced interruptions), etc. may also be specified. Other analysis parameters such as the number sections, mapping terms, water density, etc. are also under user control. Response amplitude operators (RAOs) are computed as well as the added resistance, significant absolute and relative motions, velocities and accelerations of the vessel in the specified sea spectra for the different headings and speeds. Motion, velocity and acceleration spectra at the centre of gravity and vertical motions at the specified remote locations on the vessel are also computed.
Main features:
- Save time and reduce errors using direct geometry input from any Maxsurf design.
- Fast calculation of vessel response under specified headings, speeds and wave spectra
- Determine vessel response at centre of gravity and at remote locations, including Motion Sickness Incidence (MSI) and Motion Induced Interruptions (MII).
- Graphical and numerical displays of results, including polar response graphs.
- Visualise vessel seakeeping response with real-time animations.
- Proven calculation method validated against tank tests and full scale trials.
- Compute Motion Sickness Incidence