The Wind a Moving Boat Feels

A boat moving forward stirs up its own stream of air coming from straight ahead, and that stream adds to the wind already blowing over the water. The wind felt on board is the total of the two, so it arrives from a different direction and with a different strength than the wind on shore.

This picture is part of the full library

Every lesson is open to everyone for 7 days after it is published. This one came out on September 8, 2026: its text stays readable here, and its picture opens with a subscription.

See the plans

The app is free. A subscription opens every lesson, in every school year.

Age 15: open this week

Browse Age 15

In the picture

Orange arrow coming in from the left: the true wind blowing across the water.
Teal arrow along the hull pointing sternward: the airflow made by the boat’s own speed.
Violet arrow between the two: the apparent wind, the sum of the other two arrows.
Red pennant at the masthead: it streams in line with the apparent wind.

Examples

Cycling on a still day and still feeling air pushing against your face.
Holding your hand out of a car window while the car is moving.

Key takeaways

Apparent wind = true wind + the wind created by your own motion.
Heading into the wind makes the apparent wind stronger and shifts it further toward the bow.