This video explains the procedure for calculating the tidal window for the safe transit of a vessel with the required under-keel clearance.
The use of graph for the same purpose is explained as well.
Other videos in this topic include:
Information on paper charts: https://www.youtube.com/watch?v=L4L6wihfaIc&t=27s
DR and fix position, effects of wind and current, set and drift: https://www.youtube.com/watch?v=y22P1YOntjk&t=7s
Running Fix (Transferring position lines): https://www.youtube.com/watch?v=4sWeF0DFRKk&t=618s
Tidal diamonds: https://youtu.be/8lYz3cyMvSg
Finding the course to steer to counteract tidal currents: https://youtu.be/5DQyUv34zQw
Basic terms, terminology, and symbols: https://youtu.be/ugvNDyM0IUg
Allowing for the effect of wind and current on ship’s course and speed: https://youtu.be/A8T4i4nLIzA
Counteracting for the effect of current and leeway to determine the course to steer: https://youtu.be/fSd8xJ1LXI8
The use of position lines - https://youtu.be/HlKFaIaaZWs
Rising and dipping of lights: https://youtu.be/bxb9-IoG3PI
Tides General Theory: https://youtu.be/f0e2hQUE8D4
Secondary port tide calculation: https://youtu.be/tv_oYTEccg0