Conversion from CADMATIC to IPT is not supported yet :(

CADMATIC is a leading developer of digital and intelligent 3D-based design, engineering and information management software solutions for the marine and plant industries. CADMATIC solutions (CADMATIC Marine and CADMATIC Plant) are used for all kinds of ship, offshore and process plant constructions, ranging from luxury yachts to the biggest cruise vessels and offshore platforms in the world, and from food and pharmaceutical projects to the biggest power, chemical, oil & gas and pulp & paper projects.

An IPT file extension is used for Autodesk Inventor objects.

Autodesk Inventor is a CAD application that engineers and product designers use to construct prototypes of mechanical products. These prototypes, referred to as assemblies, consist of several individual parts joined together. Each Inventor part is saved in an IPT file.

Inventor users can import IPT parts from outside the program or create their IPT parts using the Inventor's part design tools. Typically, users begin by creating a 2D drawing of a part before transforming that drawing into a 3D model. Thus, an IPT file may contain either a 2D or 3D object. Files in IPT format can be opened using Autodesk Inventor 2017, Autodesk Inventor View 2017, Autodesk Fusion 360, and SpaceClaim Engineer.