We thank Darryl Symonds of RD Instruments for making the Ocean Surveyor available on loan for this test, for invaluable help before and during the cruise in setting up the instrument, patiently answering questions before, during, and after the cruise. We thank Bill Fanning for his technical assistance during and after the cruise. Thanks go to John Freitag for working with RDI and with Sandy Shor at NSF to arrange and fund the comparison.
This work is funded by the National Science Foundation.