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	Tides and currents
	Today it is January 12 and we're in Dunkerque harbour. What will be the depth at 0430H ?       4,57m   4,68m   3,35m   5,13m     A tide with coefficient 95 is       a spring tide   high water   mean neaps     On what kind of tide are the soundings of a navigational chart based ?       High Water Spring   Low Water Spring   On a mean tide (coef. 70)   Low Water Neaps     The times of the tides are always       specified on the tide tables   local time   always indicated in GMT     What kind of tides do we have on May 12 2001 ?       Neaps   Spring   Mean tide     What kind of tides do we have on Feb. 9 2001 ?         At what time is the first HW of Dunkerque on March 3 2001 ?       0003H   0530H     What would the water height be on a spot in Dunkerque harbour where the indicated sounding is 1m - underligned - on May 7th at 1335H ?       7,0m   5,0m   6,0m   4,80m     My sailing vessel has a draught of 2,0m and I need to pass an area where the sounding indicated in Gravelines is 0,3m, underligned. Today it is May 25, 2001 and it is 1100H.       I have to wait until 1130H.   I have to wait until 1230H.   I go over it without problem.     What is the direction of the current on Jan 2 2001 at 0900H in front of Oostende Harbour ?       61°   074°