When passage planning, consider if the tidal currents help your progress and what, if any, is the effect of wind against tide on the sea conditions. When taking the dinghy to the beach you need to consider whether you tie it high up the beach or anchor it in a few metres of water. You also need to consider how much water you will have under the keel at low tide and if you have enough water around you, should the boat swing if the wind changes direction. Neap tide graph pdf#
PDF (5.8 Mbytes) A Month of Tides In this activity, student plot high and low tide data for a period of one month. Spring tides have higher high tides and lower low tides whereas neap tides have lower high tides and higher low tides.
Examples of completed graphs done by students for gallery walk. Make a note of the times and heights of high tides and low tides, and the height difference in between.
Answer key - plots of tidal data for all locations. Step 3: Make a Note of the Times of High and Low Tides.
When anchoring, you need to consider how much extra chain to let out in order to maintain a minimum of a four to one scope. Small student graphs for gallery walk (8.5 x 11 inches) PDF Microsoft Excel. Pick one day on the tidal graph and write down both high tides and both low tides that that day as well as the time they are to occur. Slight differences in tidal times are experienced in other locations in the Whitsundays, but they are not significant. When the sun and moon are at right angles to each other (bottom), the solar tide partially cancels out the lunar tide and produces more moderate tides (called. Charting the Tides Worksheet KEY Name: Section 1: Sketching Spring and Neap Tides Draw the correct position of the Moon and Sun for a spring tide and a neap tide: Section 3: Analyzing Tidal Data 1. Tide predictions are based on Shute Harbour. All boats are supplied with current tide tables. The tides in the Whitsundays flood towards the south and ebb towards the north. When the Earth, Moon and Sun are all in a line the lunar and solar tides will. The tides create currents as they ebb and flow. The Sun also has an effect on the Earths oceans. The approximate tidal range in the Whitsundays is from 1.3m at neap tides and to a 3.8 m at spring tides. 
The tides affect everything you do when cruising the Whitsunday Islands.
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