Fast tidal data facility, UNESCO / IOC
A couple of days I spotted a data event worth following up but I needed high resolution tidal data, difficult to find.
UNESCO / IOC have created a facility directly linked to many (768 listed) tidal gauges provided true high resolution data, such as 15 minute and with a record of up to 30 days.
The intent seems to be providing public data for safety and research, such as Tsunami monitoring.
The only restriction is strictly non-commercial usage.
Data delay varies, mostly < 10 minutes. Opening the Status lists I found that Swanage Pier had transmitted at 02:09, the clock here says 02:12, height -0.38 m.
Neat! 7 days showing.
Home page link, use top menu there.