The Department of Defense, through the Naval Sea Systems Command (NAVSEA), is conducting a sources sought notice to identify potential sources for the development and production of a Large Vertical Array (LVA) for SONAR applications on Ohio Class and Virginia Block III and IV submarines. The LVA will include acoustic sensors, outboard electronic bottles, cables, and fixtures, all designed to withstand harsh underwater environments and integrate with existing sonar systems. Interested parties must submit a capability statement detailing their experience and technical approach by April 18, 2025, and comply with a Terms of Use Agreement for accessing sensitive performance specifications. For further inquiries, contact Matthew Nalls at matthew.a.nalls2.civ@us.navy.mil or Stuart Burman at stuart.burman2.civ@us.navy.mil.