The Naval Surface Warfare Center, Panama City Division, (NSWC PCD), Panama City, FL intends to award a sole-source firm-fixed price purchase order to Hydroid, Inc., 1 Henry Drive, Pocasset, MA 02559 for the manufacturing and delivery of six (6) Hydroid Xponder Units (PN: 7648520). The Contractor shall provide the Government with an quality operational system that meets the requirements of ISO 9000-2015. The Contractor shall provide the facilities, all material and all labor to manufacture the six (6) Hydroid Xponder Units. This acquisition is unsuitable for full and open competition for the following reasons: All of the transponders implemented on the SDV to date have been purchased from Hydroid Inc. This unit is currently in use by the SDV's in the Fleet which, preclude substitution of items without comprehensive qualification testing. These items contain proprietary engineering technology that no other manufacturer could duplicate. The transponder is identified on Naval Sea Systems Command (NAVSEA) approved Source Control Drawing 53711-7648427 that identifies Hydroid Inc as the single source, which also precludes substitution of items without comprehensive qualification testing. As the original equipment manufacturer (OEM), Hydroid Inc is the only source with sufficient in-depth knowledge of the transponder set design and configuration that could provide the required items. Therefore, Hydroid, Inc. is the only known source capable of performing the tasking of this procurement. Est $116,300.00. NAICS Code 334511 applies. PSC is 5895. This notice of intent is not a request for competitive proposals. A determination by the Government not to compete this requirement, based upon responses to this notice, is solely with the discretion of the Government. In order to be eligible for award, firms must be registered in the System for Award Management (SAM).