GET

Purpose

To calculate/extract data points for the requested curve.

Syntax

Description

GET BUTTOCK or SECTION or WATERLINE

Section data may either be extracted from the DESIGN directory or interpolated from stored curves. Data for Buttocks and Waterlines can only be obtained by interpolating stored curves.

The user can select where the data is obtained from by using the SWITCH and USE commands.

In all cases only curves that are SWITCHED ON are interpolated.

Unless otherwise stated the following curves are always interpolated and a point with the indicated type is obtained:

• Point Lines} Ordinary points

The following curves are selected with the USE command:

In addition, if the Flat of Keel (FOK) is defined then curves fitted outside the FOB region will have extra points added to accommodate the FOS.

Similarly, if Waterline Endings or Frame Feet are required then extra points are added to accommodate the type of ending selected by the USE command.

Examples

GET DIAGONAL

Diagonals can only be created in an Orthogonal view. The plane in which the diagonal is to be created is defined by specifying two coordinates in the selected view. The coordinates may be entered on the command line or via the cursor.

Having defined the Diagonal plane, stored curves are intersected to obtain data points. The procedure for selecting the curves to be intersected is the same as that for orthogonal curves. After a GET DIAGONAL command has been successfully executed the system automatically switches to the View Plane in which the Diagonal can be manipulated using the Conventional Fairing commands.

Parameter Modifiers

Examples

GET SAC

This option causes the system to calculate the areas under all Sections which are then used in the creation of the Sectional Area Curve( SAC ). This curve can then be used to calculate basic hydrostatic properties of the ship using the PROPERTIES command and also to perform distortions of the ship using the VARIATION command.

The $W represents a name prefix. The draft height will be used to generate a unique name for each SAC.

Parameter Modifiers

Examples