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.
Orders placed after 3PM Thursday 17th April 2025 will be processed and packed over the Easter break, but will not be collected by the courier until Tuesday 22nd April 2025 (Click HERE for more information).