This video explains how a vessel's course and speed made good are calculated by allowing for the effect of wind (leeway) and current (set and drift).
Other videos on the topic of chartwork that the viewers are advised to watch 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