Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-small-boat-sailing-f8faa441521f

What do tell-tales on a sail show?

Whether airflow over the sail is smooth or turbulent.

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  1. Whether airflow over the sail is smooth or turbulent ✔
  2. How much fuel the boat has used
  3. How deep the water is below the keel

Why: Tell-tales are streamers that reveal whether flow over the sail is smooth or turbulent for proper trim.

Huh, didn't know that: Tell-tales are streamers that reveal whether flow over the sail is smooth or turbulent for proper trim.

The dad joke
Tell-tales tell the tale of the airflow.
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References

Answer: Whether airflow over the sail is smooth or turbulent. Tell-tales are streamers that reveal whether flow over the sail is smooth or turbulent for proper trim.

  1. Sailing en.wikipedia.org/wiki/Sailing
    Streamers placed on the surface of the sail, called tell-tales, indicate whether that flow is smooth or turbulent.
    Checked 2026-11-07.

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