CAD/CAM UPDATE Hydromax offers automatic identification
www.formsys.com info@formsys.com
P O Box 1293, Fremantle, WA 6959, Australia.
Tel: +61-8-9335 1522. Fax: +61-8-9335 1526.
H
YDROMAX is a comprehensive ship stability analysis program that has
been in development since the mid-1980s. Originally developed for the Macintosh and ported to Windows in the mid-1990s, Hydromax has always been a graphical- user-interface driven program. However, the latest version provides a full COM interface enabling custom analyses to be defined and standard tasks to be scripted. Like the majority of other such software,
calculations of vessel hydrostatics is done by dividing the vessel into a number of sections, typically 100 to 200 sections. Vessel geometry is loaded directly from a Maxsurf hull design file – requiring that a NURB surface model be available. Direct input of section data is not currently supported, though this is to be implemented for monohulls in the next version. The principal advantage of having a
coherent surface model is that tanks and compartments can be ‘carved’ directly from the hull surfaces with the minimum of input data (bulkhead and deck locations). Complex tanks (such as spherical LNG tanks) require the appropriate surfaces to be defined in Maxsurf and then these may be selected as tank boundaries. Unlike the majority of the software tested, Hydromax will automatically identify intersecting tank/compar tment components and generate any required negative components (for example, where a tank is defined inside a compartment). This speeds up the processes of defining the complete vessel compartmentation model. The other software reviewed places this requirement on the user. Hydromax provides a highly interactive
interface, with full copy and paste supported from all tables and interactive measurements from graphed results. Results are accumulated in a Rich Text Format window which can be read by Microsoft Word or printed directly. Hydromax provides visual feedback of the model during analysis and this may also be saved as an ‘avi’ file for later playback. Hydromax provides a comprehensive
set of criteria calculations (approximately 45). From these, it is possible to define virtually any stability criterion. A large number of predefined criteria sets, such as IMO, RAN, US and UK Navies, and MCA are included. The criteria are organised in a tree, which facilitates editing and selection for analysis. Documentation and online help are
comprehensive. A web-based knowledge base is also available for registered users.
THE NAVAL ARCHITECT FEBRUARY 2007 75
Hydromax will automatically identify intersecting tank/compartment components.
Bronswerk Marine Inc., (formerly Stork Bronswerk), is a world leader in the field of HVAC / Refrigeration systems design.
From the harshest climate of the Alaskan coast to the tropical waters of Mexico and the Caribbean, from Tugs to Tankers and Ferries to Frigates, Bronswerk Marine has the experience and expertise to satisfy all of your Marine, Offshore and Military needs in the most demanding of environments.
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