NOAA's Pacific Marine Environmental Laboratory intends to award a sole-source purchase order to SeaView Systems, Inc. for three SVS-603HR wave sensors, to be delivered in Seattle, WA. The sole-source determination is based on the requirement for compatibility with existing SeaTrac unmanned surface vehicle systems, as using a different sensor would necessitate significant and costly software redesign. This pre-solicitation notice is not a request for competitive proposals. However, firms believing they can meet the requirements may submit substantiating documentation to the identified point of contact within 15 days of this notice's publication. Any such submission will be evaluated to determine if a competitive procurement is possible.