NNS Supplier Technical References & Guides

Information and links on the Supplier Technical Document page are provided to help our suppliers navigate the sometimes complex and challenging technical requirements associated with supplying material and components to Newport News Shipbuilding.

A Visual Work Instruction (VWI) is a CAD Model based representation of technical instructions and product manufacturing information. Outsourced VWIs are intended for use as walkthroughs of the relevant details for the scope of work. This is accomplished through presentation of a product's build/assembly sequence and design intent. VWIs are created using the SAP Visual Enterprise .RH file format and are used across both Carrier (CVN) and Submarine (VCS/VPM) programs at Newport News Shipbuilding.

PDF+JT is a 3D file format similar in form and function to an ISO standard 3D PDF. PDF+JTs are created by our program partner, Electric Boat, and used to convey technical product information in both a PDF and CAD model based format. These documents are assembled with relevant product manufacturing information (PMI) similar to paper based drawings with the additional benefit of embedded lightweight .JT model files for use as a visual aid. PDF+JTs are created through use of Siemens software and are used for the Columbia (CLB) and Virginia Payload Module (VPM) programs at both Electric Boat and Newport News Shipbuilding.

NOTE: Model Based Disclosures (VWI and PDF+JT) are released with intended contractual dimensions. The vendor may use the native measurement tools from the relevant CAD rendering program to obtain additional measurements, however, measurements obtained in this manner are for Information Purposes Only.

SAP provides a useful reference on its measurement tool for Visual Enterprise Viewer (VEV) which covers measurements, delta measurements, repositioning, cross sections and modification of global measurement settings.

Siemens provides a useful reference on its measurement tool for JT2Go version 12.3 on its documentation site. Topics covered include measurement of single parts, distances and angles, approximations, and preferences.