The Department of Defense, through the Naval Sea Systems Command (NAVSEA), is preparing to draft specifications for MIL-DTL-23457C, which pertains to Diesel Marine Engines for propulsion and auxiliary purposes. This initiative aims to accommodate a variety of design solutions and processes while encouraging a diverse vendor base in the engine manufacturing sector. The specifications are crucial for ensuring the operational readiness and efficiency of naval vessels, highlighting the importance of reliable diesel engines in maritime operations. Interested parties can request copies of the draft document by emailing CommandStandards@navy.mil, with the review period concluding on January 21, 2025. It is important to note that this announcement is not a solicitation for bids.