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Learn the Sea

Course to steer

learnthesea.com

Lay off the ground track you want, apply the hour’s tidal stream and your leeway, and read the course to steer and speed made good.

From

To

Ground track wanted °T

Boat speed (kn)

Distance (M)

Passage time

Tidal stream over the passage

HourSet °TRate (kn)Notes

Vector triangle

Ground track, tidal vector and water track, drawn to scale.

Result

Course to steer °T

Leeway (°)

CTS + leeway °T

Speed over ground

Variation / deviation

Compass course °C

ETA