The duty watch
Duty watch 06:00–22:00, every day of the year. One person, not a queue.
Wrackline Predictions Ltd, Ossett Head.
If the tide did not do what we said
That is the message we most want. Give us the station, the date, the time and what the water actually did, and it goes into the next analysis — which is where the figures on the accuracy page come from.
Wrackline is an aid to planning and is not a substitute for an official tide table. Do not navigate on it.