The harbor grasp notes wind direction through flying flags, jotting angles as masts clink and buoys bob on easy swells.

https://caidenzskv227.rivetgarden.com/posts/birth-of-a-banner-when-and-how-the-first-american-flag-emerged-2

The harbor grasp notes wind direction by way of flying flags, jotting angles as masts clink and buoys bob on tender swells.