Hull Design Wizards

Now creating a hull using NURBS surfaces and direct editing of the control points is easy! RhinoMarine provides two wizards to greatly simplify this process for hard chine and sailboat hulls. The user simply enters a few basic parameters that describe the hull shape, and immediately the 3D surface model is created and displayed. While this surface is fair, it's unlikely that it will be the final shape that the designer is looking for, so further editing can be done by turning on the surface control points and modifying the shape.

Hard Chine Hulls

The Planing Hull (hard chine) wizard quickly creates a hull of any size, with either a single chine or an inner and outer chine. Inputs include values such as overall length and beam, as well as shape parameters such as bow fullness and forefoot shape. The hull surface is created instantly, so it is easy to experiment with different values to get the shape that you want.

Inputs: Length Overall Beam Overall Deck Height Fwd Deck Height Aft Chine Height Fwd. Chine Width (0=single chine, >0 gives inner and outer chine)
Inputs: Transom deadrise angle Rocker (the slope of the bottom in profile view) Stem rake angle Deadrise limit (controls the twist of the bottom in the bow region)
Inputs: Bow fullness (in planview) Bow rounding Transom Chine Width Transom Deck Width Bottom twist (from transom to midships) Forefoot shape
This is the resulting hull surface, shown with the control points turned on. From here, you can modify the surface by moving individual control points or groups of control points, and add or remove rows and columns in the control net as necessary.

Sailboat Hulls

Like the Planing Hull  wizard, the sailboat hull wizard quickly creates a hull of any size, using inputs  such as overall length and beam, as well as shape parameters such as bow fullness and forefoot shape. The hull surface is created instantly, so it is easy to experiment with different values to get the shape that you want. You can even see the basic hydrostatic properties of the hull before it is created.

Inputs: Length on deck Deck height forward Stem Angle Shape of the sheerline Transom angle Deck height aft Transom height
Inputs: Max beam on deck Max beam position Transom width at deck Forefoot shape Midship section shape Number of control net rows and columns
Input: Waterline height Output: Length Overall Max Beam Waterline Length Waterline Beam Volume Longitudinal center of buoyancy Prismatic coefficient
This is the resulting hull surface, shown with the control points turned on. From here, you can modify the surface by moving individual control points or groups of control points, and add or remove rows and columns in the control net as necessary.

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