This is a tricky one, wordy with lots of information - see if you can weed out what you need for the calculations.
You are planning the next part of your passage. The route you would like to take will save you just over 3 hours. It takes your 13.5m air draught vessel under a power cable that has a charted height of 15m, the tide table gives you the following information for the time you are planning to travel. LW 0521 0.3m HW 1120 9.2m LW 1729 0.2m the HAT at the bottom of the tide table says 10.3m and you see the mean spring range is 9.0m, the mean neap range is 5.2m. The met office forecasts a barometer reading for the area of 1023 mb
You would like a clearance of at least 2m
All things being equal you estimate that you will be at the power cable by 1220
a. Will you be able to pass?
b. What clearance will you have?
c. Will you have to wait?
My answer next week - enjoy.