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NP219 Tidal Stream Atlas Portsmouth Harbour and Approaches

The Admiralty Tidal Stream Atlas: Portsmouth Harbour and Approaches contains thirteen charts for both Portsmouth Harbour and the Approaches to Portsmouth showing tidal streams at hourly intervals from six hours before to six hours after HW Portsmouth. In addition a diagram included showing tidal streams for three-and-a-half hours after HW for Portsmouth Approaches due to the extra strong streams at that particular time.