Create Seam/Butt

Purpose:

To create or modify a seam or butt in a hull surface.

Prerequisites:

None.

Instructions:

• In create mode, the user must give a curve definition, a seam number and symmetry information. If a curve is already selected, it will be used as the curve definition. If several curves are selected, the seams may be automatically named. In this case, the user must enter the first seam name.

  The seam may also be marked as a block limit seam, which will be drawn differently than other seams in some views. The seam may be symmetric (if the curve is defined on portside), port side specific (again, curve defined on portside), starboard specific (if the curve is defined on starboard) or over the centerline (if the curve extends over the centerline).

• In modify mode, the user may change any part of the seam, including its name and box. The Modify Curve button lets the user change the curve definition. Since the seam is trimmed with the box, the extension of the seam can be changed by modifying the box co-ordinates.

Options:

None available.

Result:

• In create mode, a new seam will be created and selected. The Store function may be used to store the seam on the hull form data bank.

• In modify mode, the selected seam will be updated with the new definition data. To make the changes permanent, Store must be used. Using the Skip function before the seam has been stored will undo the changes.