TIDAL HEIGHTS AND TIDAL STREAMS PART A - TIDAL HEIGHTS.


1. Which letters refer to the following? i) Height of tide ii) Charted depth


iii) Depth of water iv) Drying height


v) Charted elevation vi) Charted vertical clearance


Use RYA Chart 4, Plan F 2. a) What is the charted depth in position 46°15’.60N


005°52’.80W?


b) If the height of tide is 2.2m, what will the depth of water be in the above position? c) What is the charted depth in position 46°16’.25N


005°53’.55W? d) If the height of tide is 4.6m, what will the depth of water be in the above position?


3. a) What is the charted depth in Rozelle Cove Marina? b) Using the tidal levels information for Rozelle Cove on the title panel of Chart 4. What is the depth of water in Rozelle Cove Marina at MLWS?


Use the RYA Almanac


4. What is the local time and height of high water at Dunbarton: a) In the afternoon of Thursday, 27th June? b) In the morning of Wednesday, 6th February?


5. The range of the tide is used to determine if it is a spring, neap or mid-range tide. How is the range calculated?


6. What is the range of the tide at Victoria, and is it springs, neaps or mid-range: a) During the morning of Sunday, 21st April? b) During the afternoon of Thursday, 3rd January? c) During the afternoon of Monday, 18th February?


7. On Sunday, 25th August at Victoria:


a) What is the time and height of daytime HW, and the height of the following LW? b) Calculate the height of tide at 1545 DST.


8. Calculate the height of tide at Port Fraser on Tuesday, 29th October at 1423 UT.


9. Tidal height information is available in almanacs and local tide tables. a) Where else could you get tidal height predictions? b) Where can live information about actual tidal heights be found?


10


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24