| Operating System
| - Windows 95, 98, NT 4.0, 2000, XP, Vista or 7
| Design and Fairing
|
- based on a network of 400 lines and 100
transverse sections;
- uses weighted natural cubic splines longitudinally, quadratic bezier curves transversely;
- add, delete, edit sections on an isometric view of all lines and sections;
- add, delete, edit lines;
- relocate and redefine sections;
- alter measurement units;
- rescale all or part of design;
- enter offsets of existing design;
- catamaran support;
- generate NACA foil profiles automatically;
- design hull using multiple intersecting surfaces;
- rounded stem;
- rounded and raked transom;
- zoom in section editing;
- automatic conversion of monohull to catamaran;
- automatic generation of stringers (See below);
- plate development (See below);
- internal tanks for damage and operating stability assessments;.
- retain "overlay" design for reference viewing when working on a similar design.
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| Hydrostatics
|
- fixed or free floating;
- reports to screen for any heel angle;
- write hydrostatic values in tabular form to a text file;
- hydrostatic cross-plots and tables, all exportable to word processors and spreadsheets..
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| Viewing
|
- orthogonal - plan, profile (elevation) and body plan (end elevation);
- perspective - full, port and starboard half. Perspective
views can be rotated and perspective effects adjusted using the keyboard arrow keys or
the scrollbar. Draw fair lines between sections; animated and shaded surface views;
- zoom in on any orthogonal or persective view.
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| Plate Development
|
- evaluate and show the developability of a surface between any pair of adjacent hull lines;
- plot the shape of any developed surface when rolled out flat (for cutting from plate);
- export rolled-out plate to a DXF file.
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| Stringers
|
- calculate stringer locations between any adjacent pair of hull lines,
for fixed stringer count or fixed stringer spacing;
- include stringer notches in frame views (See File Output, below).
| Drag calculations
|
- six empirical drag schemes (Gerritsma 1981 and 1996, Holtrop and Mennen, Oortmerrssen, Savitsky,
Savitsky and Brown);
- detailed summary of drag for any speed;
- plot any combination of the six drag curves against speed.
| Data Input
|
- read vertical offsets of curved waterline (e.g., wave effects on stability);
- import offsets of an existing design in a range of tabular formats.
- import some DXF files
- import GHS files
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| File Output
|
- print or plot any display;
- frame outlines with thickness corrections
and stringer notches (including angled cutouts on corners and holes at frame corners)
;
- lateral offsets of waterlines;
- VRML output of hull surface;
- write 2- or 3-dimensional DXF representation of the hull, for use by CAD programs.
- export GHS file
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| Utility Functions
|
- run any program from Hullform menu;
- DDE server.
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| Print/Plot Output
|
- print to any printer or plotter device supported by Windows;
- plot to any printer device with graphics capacity or any plotter supported by Windows.
- write any view to a range of graphic formats (particularly WMF, DXF and HPGL)
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| Graphical User Interface
|
- use any display supported by Windows;
- mouse support for all normal functions plus line and section editing;
- context-sensitive help;
- user control of colours on colour display.
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