The Department of Defense, specifically the Naval Surface Warfare Center Philadelphia Division (NSWCPD), is seeking information on commercial and military navigation lighting systems for ships over 50 meters in length that do not utilize incandescent light sources. The objective is to gather details on currently available systems to assist in the development of future procurement guidance and military specifications, transitioning to performance-based requirements to enhance system operation and address obsolescence concerns. This initiative is crucial for modernizing navigation lighting systems on U.S. Navy surface ships, ensuring compliance with international regulations while improving operational efficiency. Interested parties should submit their responses via email to Michaela Del Rossi at Michaela.C.Delrossi.civ@us.navy.mil, with a copy to Matthew D. Parlett at matthew.d.parlett.civ@us.navy.mil, including the reference "Navigational Lighting - NSWCPD Code 447 - N6649825R0507" in the subject line. Responses are voluntary and should include detailed technical information about the systems offered.