Clearwater has completed the development of their next generation instrument controller, the ClearSat-5.0, which will replace the ClearSat-4x series of controllers in the coming months. It has had its first successful application in our ClearSat-15, the SVP drifter. The ClearSat-5.0 employs the next generation MicroChip microprocessor the FF16HP which brings new levels of capability to our controller. The ClearSat-5.0 features a redesigned board with more I/O and fewer components on the board, assuring that our controller will have enhanced capability, while holding the line on pricing. ClearSat-5.0 will feature improved power saving features that drop sleep currents to 20 μa. ClearSat-5.0 will maintain compatibility with our suite of transmitters and sensors. We will still interface seamlessly with Argos 2 transmitters from Telonics and Kenwood, the Kenwood Argos 3 PMT and Iridium 9602 SBD modem.