Argentine Vesel 

1 --- Draw the guide curves with the more accessible method to the draftsman.

 
2 --- Convert the curves to Plines using specific commands. (3Dpolys are not recommended because it will be difficult to correct any mistake).

Up to from 100 points for the left, right, up and down curves.

The frame requires form 30 to 50 points. 

3 --- Verify the correct layer name of these polylines.

4 --- Verify the curves endpoints, they should not cross the path curve.

5 --- At the point of maximum proximity with the path curve should be as close as possible without touching it.

6 --- The up, down and path curve should be in the same plane.

7 --- The left, right and path curve should be in the same plane.

6 --- Apply GUIDEGEN command, Selected polylines output option, quantity twenty and interpolation cero.

We should get a smoothly basic run.
 

This is a FAST Check.

This is the key to be on the faster road.

 
The quality and quantity of frames and guide’s curves are defined by desirable goal.

The number of frames generated with Guidegen must be increased in areas with sharp turning zones of the guide curve.  The distribution of points must be closer in those zones also. To get a mesh faithful to the goal

Notes: 

ThicknessSolidShell option output of the Guidegen command.

About the ends (font and back of the ship).

The designer should be   very careful with the approchement degree to the ends.

If we approach too much with a “low ends factor value”, there will be no place for the shell thickness to be generated. Some times the solid intersect itself and the solid could not be generated.

If the ends factor is too bigger our design becomes shorter in the front and back ends.

 
8 --- We run Guidegen with Mesh output and 200 steps quantity.

Then we will apply a visual style REALISTIC command, and the SHADE MODE. 

Now we can evaluate the image quality, the quality of the frames mapped out.

Correct the guide polylines shape as need to obtain our goal.

9--- With the guide curves optimized convert them to Splines, about 100 points Splines are recommended, and then analyze the result  that should be even better quality. 

10 --- Here we are already able to generate loft surface volumes, solid shells and solids.

The Hull
 
 
 
 

 WIRE FRAME SOLID SHELL

WIRE FRAME SOLID SHELL
 
 

REALISTIC SHADE MODE

PLENTY SOLID 
 
 

READY TO BE PROCESSED

Cut pieces of the hull in order to define the forms required overboard all along the hull. 

1 --- This output should be generating as ThicknesSolidShell.

The different heights overboard to be carried out. Cut them with a surface. Follow these steps. 

Cut surfaces are generated with Loft command applied to a polyline and its copy (curved or straight).

 
The cut surface is obtained from a Plines drawn over the hull lateral view, and them  making a copy of them at enough distance to cover the hull wide in bottom  view.

This is the Lateral view

 
1.1--- Cut Procedure :

1.1-a.  How to get the cut surface

Loft command option: 

Guides/Path/Cross sections only----- Cross sections only 

Select objects to slice: 1 found

1.1-c Apply SLICE command:

Select objects to slice: 1 found 

Select objects to slice:

Select objects to slice:

Specify start point of slicing plane or [planar 
Object/Surface/Zaxis/View/XY/YZ/ZX/3points] <3points>: S

Select a surface:

Select solid to keep or [keep Both sides] <Both>:

1.1-d  Delete the cut  piece or change the color of it, or make it transparent if the case is a windscreen, ports or windows.

 
1.1-e --- in the case of the ships hull decks, they should be generated as slices of a plenty solid hull, using a surface cutter. 

The distance between the surfaces must be equal to the deck thickness.

1.1-f Bulkheads should be obtained like the decks, but using a vertical surface.
 

 
1.1-g The frames will be obtained with a cut surface vertical as were done with the decks. 

 
The details of such any constructive element will be completed using normal CAD tools.

Port is constructed using a solid between two close perimeter plines. In the different sizes and door position.

 
The port hole of any shape is finally obtained using the command SUSTRACT.

 
The Hull