The apparent wind is zero when the true wind...

The apparent wind is zero when the true wind...

Question 1 of 2707066636ee928f7522a1c51914f

The apparent wind is zero when the true wind is __________.

Question 1 of 27070

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Q

The apparent wind is zero when the true wind is __________.

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🔍 Key Concepts

• True wind vs. apparent wind on a moving vessel • How a vessel's speed and direction combine with the true wind to create apparent wind • The special case where apparent wind becomes zero (no relative airflow felt on deck)

💭 Think About

• Imagine you are standing on the bow of a ship: in which situation would you feel absolutely no wind on your face? • Think vector-style: if one wind (true wind) and another wind (caused by the ship’s motion) are equal and opposite, what happens to the resultant (apparent) wind? • For each choice, ask: what direction is the true wind relative to the ship’s heading, and is its speed greater than, less than, or equal to the ship’s speed?

✅ Before You Answer

• For zero apparent wind, the ship’s motion wind and the true wind must cancel each other exactly (same speed, opposite direction). • Check whether “from ahead” vs. “from astern” means the true wind is in the same direction as the ship is moving, or opposite. • Verify which option (if any) describes equal speeds in opposite directions, not the same direction.