L3Harris Unidyne (also known as L3 Unidyne) is a company engaged in the alteration design, ship repair, and modernization industry. It provides engineering and technical services, end-to-end design, procurement, fabrication, installation, testing, training, equipment assessments, logistics, repair, depot operation, and maintenance of Hull, Mechanical Electrical (HM&E), and electronic systems aboard submarines, surface ships, and at Navy shore facilities.