Seamanship_Secrets_185_Tips_-_Techniques_for_Better_Navigation-_Cruise_Planning-_and_Boat_Handling_Under_Power_or_Sail_(Re)_e..

304 seamanship secrets

DURATION OF SLACK WATER

Maximum

Current (knots)

Add and Subtract

to Time Slack Begins

(minutes)

Total Transit Time

in Slack Water (minutes)

1.0 60 120

1.5 40 80

2.0 30 60

2.5 24 48

3.0 20 40

3.5 17 34

4.0 15 30

4.5 13 26

5.0 12 24

5.5 11 22

6.0 10 20

6.5 9 18

7.0 9 1 8

7. 5 8 1 6
   8.0 8 16
   8.5 7 14
   9.0 7 14
   9.5 6 12
   10.0 6 12