NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/adcp/44021/catalog.html

Dataset Size Last Modified
     Folder  44021   --
         44021a2007.nc 657.0 Kbytes 2010-02-22T14:37:26Z
         44021a2012.nc 84.76 Kbytes 2012-12-31T23:04:00Z
         44021a2013.nc 37.89 Kbytes 2013-01-09T16:04:00Z

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