There are some curves in the select list

The system makes seams out of these curves. In case the selected curve is a lines fairing curve or a hull curve it is copied to the new seam object. Please Note that a seam "remembers" that it was created from an existing curve, as there is a reference to the definition curve in the seam object.

The following form is displayed:

Figure 2:1. Seam / butt dialog.

• The Name field

  The name of the seam.

  Initially it contains the name of the last seam created or the seam name prefix.

• The Type field

  A seam can be of two type, Ordinary Seam or Block Limit Seam. Block limit seams are drawn with a bold line.

• The Symmetry field

  Here you can select if the seam is valid for both portside and starboard, for one of the sides only, or if it is a seam across the centerline. (A butt extending into the opposite side only to enable the definition of a plate over the centerline should not be registered as a butt "over CL".)

• The Bevel field

  Here you can define the default bevel for the seam. This bevel will be used as the default bevel of a plate edge when the seam is used as a plate edge. The bevel may be overwritten by the shell plate.

• The Surface field

  The surface in which the seam is defined. This field is for information only and cannot be changed.

• The fields Xmin, Xmax, Ymin, Ymax, Zmin and Zmax

  The box defining the seam limits. Initially set to the corresponding values of the default box.

  When you press OK, a seam with the given name and properties is created. The program also checks that the name is a valid seam name.

  If a seam with the given name should already exist, you will have a question whether it is OK to override the existing seam. You have the following options:

  • Press the Yes button to create the seam with the name as given. The old seam will be lost.

  • Press the No or Cancel button to give the seam another name.

• The Cancel button

  the system exits the Seam/Butt function.