NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/oceansites/deployment_data/SOG/catalog.html

Dataset Size Last Modified
     Folder  SOG   --
         OS_SOG-1_200805_P_Current_sn12668.nc 450.8 Kbytes 2015-07-24T12:30:53Z
         OS_SOG-1_200805_P_Current_sn7432.nc 451.4 Kbytes 2015-07-24T12:30:58Z

National Data Buoy Center THREDDS Server at National Data Buoy Center see Info
THREDDS Data Server [Version 4.6.14 - 2019-07-23T11:04:31-0600] Documentation