NDBC THREDDS Server Catalog https://dods.ndbc.noaa.gov/thredds/catalog/data/stdmet/51200/catalog.html

Dataset Size Last Modified
     Folder  51200   --
         51200.ncml 302.0 bytes 2017-11-15T16:15:19.316Z
         51200h2009.nc 216.8 Kbytes 2009-12-31T23:51:00Z
         51200h2010.nc 670.4 Kbytes 2010-11-08T16:13:00Z

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