The various complex situations at sea can be broken down into simple relative velocity problems.
These situations could be collision avoidance, fleet maneuvering requirements, simple & complex flight operations, closing on to a faster ship, effect of wind/tide on the course made good, etc.
• Calculation of Course & Speed from Relative Motion • Closest Point of Approach • Opening / Closing on a Steady Bearing • Changing Station on a Moving Ship • Calculation of True Wind and Flying Course
https://andro.io/app/relvel
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