Build. When the sail was designed, when it was cut, when it shipped. The intent behind the configuration — what the owner wanted this sail to do, what kind of sailing it was built for.
Design. Every dimension and parameter set during design. Sail area, edge lengths, draft positions, batten geometry, reef points, reinforcement layouts, fiber routing maps.
Review. The sailmaker's review notes — what was checked, what was confirmed, what was adjusted before the sail went to production. With name, date, and sign-off.
Materials. Every cloth, fiber, thread, ring, ring backing, slide, batten, and fitting that went into the sail. Brand, grade, and batch reference where it matters.
Hardware. What's at the tack, the clew, the head. What model. What size. What date that hardware spec was current.
Measurement. Final dimensions and weight after the sail was built — actual values from the loft floor, not the design targets.
Time. The tag's solar strip accumulates light over the sail's life. A simple record of how much the sail has been in service.
Your additions. You can attach photos to the record — a damaged batten pocket, a chafe mark, a sail that looks great after three seasons. They stay in the file.