Maritime surveillance systems (MSS) are vital strategic and operational capabilities that are deployed within the undersea domain. These systems and supporting elements have the potential to support a wide range of missions. As we look toward operating environments beyond 2050, we need to prioritize science, technology and engineering design efforts in order to address an increasingly dynamic and challenging future. This workshop will offer the undersea warfare community of interest an opportunity to survey the current state of maritime surveillance systems; assess research and development efforts; and prioritize investments in science and technology. From that survey, community members will assess contemplated MSS operational and functional capabilities that should be pursued in advancing undersea warfare. This workshop is a continuation of U.S. Naval War College's Gravely Group support for advancing maritime dominance.