KB1 is a simple keelboat design created to demonstrate the Shipshape parametric CAD library and the design setup of the Shipshape organization. The entire boat—hull, deck, keel, rudder, rig—is generated from a single set of parameters, with all geometry, analysis, and documentation produced automatically.
KB1 - 6m fiberglass daysailer with fin keel
Key Specifications
The principal dimensions and design ratios that define the boat.
| Parameter | Value |
|---|---|
| LOA | 6.1 m |
| LWL | 5.6 m |
| Beam | 2.2 m |
| Draft (total) | 1.2 m |
| Freeboard | 0.6 m |
| Displacement (est.) | 1771 kg |
| Sail Area | 10.0 m² |
| Mast Height | 8.0 m |
| Ballast Ratio | 23.2% |
Renders
3D views of the colored CAD model, rendered from the parametric geometry.
Isometric
Starboard
Stern
Top
Lines Plan
The traditional three-view lines plan, generated by slicing the 3D hull with a series of planes.
Profile (Sheer Plan)
Body Plan (Cross Sections)
Full-Breadth Plan (Waterlines)
Stability
The GZ curve shows the righting arm as a function of heel angle, computed from the hydrostatic model at the design displacement.
GZ righting arm curve
Mass Breakdown
Estimated component masses, derived from the geometry and material properties.
| Component | Mass (kg) |
|---|---|
| Total | 826.0 |
Downloads
FreeCAD model files, STEP export, and the full lines plan for offline use.
Generated from parametric CAD model using Shipshape