NOAA intends to negotiate a sole-source procurement for a Kongsberg EK80 manual calibration kit with downriggers to support fleet-wide calibration of scientific echosounders. The purpose is to establish a centrally managed, shared kit to improve operational readiness and data quality for fisheries surveys by enabling calibrations during pre-season maintenance windows. The expected delivery is 4 weeks after receipt of order, anticipated for April 30, 2026. The delivery address is the NOAA Ship Oregon II at the Gulf Marine Support Facility in Pascagoula, Mississippi. While this is a notice of intent for a non-competitive action, firms believing they can fully meet the requirements may submit substantiating documentation for consideration.