The finish — crossing the line and Rule 28

The race ends the instant any part of your boat crosses the line. The rules around limit marks, sailing the course to the finish, finishing early, and redress at the line.

You Finish At The Line — Limit Marks Have No Required Side (Case 58)

You finish at the line — a limit mark past it has no required side.

When You Can Cross the Finish Line Either Way (Case 82)

A finish line you can't read lets you cross either way — first crossing counts.