Admiralty Tidal Stream Atlas : Bristol Channel and Lundy to Avonmouth
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Admiralty Tidal Stream Atlases In this series the atlases show, at a glance, both direction and rate of tidal streams at hourly intervals by careful and accurate use of graded arrows. Display mean neap and spring tidal rates in tenths of a knot. Include diagram to assist you to calculate the tidal stream rates for your required day.