Enter your figures
Enter the values below to calculate your result.
Global units and practical marine assumptions. Review the note beside the result for important limitations.
Calculation Results
Based on the figures you entered.
About this calculation
Directions are bearings toward which vectors point; current is added to vessel velocity through water.
How to use this calculator
What to enter
Enter or select the following as requested: Vessel speed through water (knots); Vessel heading (° true); Current speed (knots); Current direction TO (° true). Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The output is the matrix or vector operation requested, calculated from the entered components and dimensions. Check matrix sizes, vector order, coordinate conventions, and whether the operation is defined for the supplied inputs.
When to use it
Use this to solve or verify a linear-algebra or vector problem. Keep dimensions consistent and confirm the result against the conventions used in your course, model, or application.