The Department of Defense, specifically the Navy, is seeking innovative solutions through the Small Business Innovation Research (SBIR) program for the development of a Passive Position Sensing and Navigation system for Small Unmanned Surface Vehicles (sUSVs) and other small crafts operating in GPS-degraded or denied environments. The objective is to create a compact, affordable system that maintains accurate positioning, navigation, and timing (PNT) without reliance on GPS, with specific performance requirements including a positioning accuracy of less than 10 meters and a total system cost under $125,000. This initiative is critical for enhancing naval operations by enabling safe navigation while minimizing the risk of location disclosure to adversaries. Interested parties should note that the solicitation will open on January 8, 2025, and close on February 5, 2025, with further details available at the official SBIR website.