Internal Surface Editor - Create Mode

In the General panel you specify an identifier via the ID field. Remember that the maximum length of IDs in Hydrostatics is 8.

Note:
If however the supplied ID already exists a number will be appended to it to generate a unique ID. (If the supplied ID ends in a number then this will be incremented.) The ID can be changed at a later stage via the tree.

Also specified in the General panel is the Use of the internal surface to be created. The three types of Use (accessed via the drop down list) are:

1. Compartment Limit

   a surface used in the definition of compartments as well as being a primary structural item.

2. Structure

   a simple planar (in the 3 orthogonal planes) surface representing secondary structural members.

   Note:
   This general rule of a simple planar surface, is true for structural items created through Structural Design. Far more complicated internal surfaces can be modelled in Compartment (using the full compliment of editing tools) to define, for instance, complex angled superstructure. These surfaces can then be simply and rapidly turned into a steel definition in Structural Design.

3. Block Limit

   a surface specifically intended for use in generating block division

The Creation Methods available are:

• Predefined - set the required location for the internal in the Position edit field and select the 4 required boundaries in the Constraints Page before clicking Apply on the Constraints page.

• Interactive - when clicking Apply then the internal’s location is selected using the cursor (and clicking the Left Mouse button) in one of the views. If a grid is active, the interactive placement will snap to the nearest grid position.

If the type is set to Longitudinal then an additional Creation Method is available:

• Offset Shell - when clicking Apply (on the Constraints page), a longitudinal bulkhead is generated by offsetting the shell laterally by the specified Position. Unless the Port option is used, the bulkhead is generated on the starboard side.

  Important:
  The aft, forward, lower and upper limits must be selected in the Constraints Page before an offset longitudinal can be created.

  Note:
  Outside of the designated limits, the bulkhead edges are swept parallel to the X and Z axes, with corner patches added to create the required untrimmed surface.

Use the option, Lock to Frame Table, to lock an internal surface's (transverse, longitudinal or deck) definition with relationship to the Frame Tables.