Submarine Maintenance Engineering Planning and Procurement (SUBMEPP) is a Department of Navy engineering organization that specializes in submarine maintenance engineering. SUBMEPP works with shipyards and maintenance facilities across the country and around the world to ensure that the United States submarine fleet remains safe and operational. SUBMEPP engineers maintain submarine safety and operability by determining the technical requirements required for maintenance while considering factors such as cost, logistics and scheduling. It is SUBMEPP's mission to keep all submarines safe, reliable and affordable to achieve planned service life through our engineered life cycle maintenance, material and modernization products and services.