Axis System (Ships Coordinate System)

After deciding how to represent an equipment item with the appropriate primitives, you need to consider both the orientation of the equipment itself and that of its primitives. Models are built in a 3D world, which allows you to position and orientate any element. The axis system used in the 3D world relates to the ships co-ordinate system as you would expect in ship design or compass directions. Just as you use positions such as ‘Frame 51 + 500 Lg (Horz) 7 + 250, Lg (Vert) 21 – 80’, you can also use absolute coordinates for X, Y, and Z.