The Naval Surface Warfare Center, Crane Division is conducting market research to identify businesses capable of supplying TR-343 Transducer Ceramic Stack Assemblies, which are critical components for the AN/SQS-53C sonar array. This is a sources sought notice only and does not constitute a formal solicitation or commitment to award a contract. The performance location is Crane, Indiana. Interested parties must submit written responses via email to the specified point of contact. The government encourages participation from small businesses and other designated categories, and responders must be registered in the System for Award Management (SAM).