How did you get on with last weeks question?
My thoughts......
Add 1 hr because of British Summer Time (Tide table was June)
Tidal range 7.5m to 0.3 = 7.2m. then 7.5m to 0.3 = 7.2m
Whatever rule you decided to use
|
0945 |
Rule of 12th |
|
0.3 |
|
Percentage Rule |
|
0.3 |
|
1045 |
1 |
0.6 |
0.9 |
|
10 |
0.72 |
1.02 |
|
1147 |
2 |
1.2 |
2.1 |
|
15 |
1.08 |
2.1 |
|
1249 |
3 |
1.8 |
3.9 |
|
25 |
1.8 |
3.9 |
|
1351 |
3 |
1.8 |
5.7 |
|
25 |
1.8 |
5.7 |
|
1453 |
2 |
1.2 |
6.9 |
|
15 |
1.08 |
6.78 |
|
1555 |
1 |
0.6 |
7.5 |
|
10 |
0.72 |
7.5 |
|
1657 |
1 |
0.6 |
6.9 |
|
10 |
0.72 |
6.78 |
|
1759 |
2 |
1.2 |
5.7 |
|
15 |
1.08 |
5.7 |
|
1901 |
3 |
1.8 |
3.9 |
|
25 |
1.8 |
3.9 |
|
2003 |
3 |
1.8 |
2.1 |
|
25 |
1.8 |
2.1 |
Minimum depth where we are will be 3.9m
Draught 1.6m + safety of 2.0m = 3.6m needed
Minimum expected depth is 3.9m so we are OK where we are.
Max expected depth is 7.5m
7.5m x 4 = 30m chain to pay out
If you managed to get all that - well done.
Next weeks question on the way.