You have had a rather challenging transit and been on the go for the last 10 hours.  It is 1350, you are going to anchor in a Welsh bay for the rest of the day for a break. You intend to leave and continue on your journey around 1900. your echo sounder says the current depth of water is 5.7m a look at the almanac gives you the following tidal information. 

Tues 23 June

HW 0234   12.4m

LW  0845   0.3m 

HW  1457  12.9m 

LW  2109   0.3m 

Your draught is 1.6m

What is the minimum depth of water you need under you to guarantee you do not go aground during your stay? (you would prefer a safety margin on 2m) 

You have 40m of chain then 20m of rope in your anchor locker. How much do you pay out?

 
 

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