Running Backstays and Checkstays: When Are They Necessary?
Running backstays and checkstays are movable rigging components that provide aft support to a mast against the forward pull of headsails, especially inner forestays and cutter stays. They are not required on every boat, but on some rigs they are essential for preventing mast failure and controlling sail shape. This article explains how they work, when they are necessary, and how to use them safely.
