Examples
Examples
Try the starting example
- Through-water speed (knots)
- 6
- Heading clockwise from north (degrees)
- 90
- Current speed (knots)
- 2
- Current direction TOWARD clockwise from north (degrees)
- 0
- Planned straight ground-track distance (nautical miles)
- 20
- Ground speed (knots)
- 6.324555
- Ground track (degrees clockwise from north)
- 71.565051
- Travel time along resulting ground track (hours)
- 3.162278
Try another scenario
- Through-water speed (knots)
- 6.6000000000000005
- Heading clockwise from north (degrees)
- 90
- Current speed (knots)
- 2
- Current direction TOWARD clockwise from north (degrees)
- 0
- Planned straight ground-track distance (nautical miles)
- 20
- Ground speed (knots)
- 6.896376
- Ground track (degrees clockwise from north)
- 73.141601
- Travel time along resulting ground track (hours)
- 2.900074
Calculation method
Calculation method
Ground speed (knots)
Vector-add through-water and current velocities in east/north; time=distance/resultant speed.
Ground track (degrees clockwise from north)
Vector-add through-water and current velocities in east/north; time=distance/resultant speed.
Travel time along resulting ground track (hours)
Vector-add through-water and current velocities in east/north; time=distance/resultant speed.
Symbols and units
- a
- Through-water speed (knots)
- b
- Heading clockwise from north (degrees)
- c
- Current speed (knots)
- d
- Current direction TOWARD clockwise from north (degrees)
- e
- Planned straight ground-track distance (nautical miles)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Constant vectors and resulting straight ground track, not a steering correction, route or safe passage recommendation. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Constant vectors and resulting straight ground track, not a steering correction, route or safe passage recommendation.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.