As the boat tacks they change over. Another function of the running backstay is to adjust the tension of the forestay to suit the sailing angle and sea condition. In general, during a hard beat when the boat sails very close to the wind, the running backstay is tightened to increase the tension of the forestay.

Are running backstays necessary?

Adding a cutter stay to a masthead rig Running backstays may be necessary if a cutter stay for a storm jib or staysail is fitted. Option 1: The cutter stay is located 3-6% of the height of the foretriangle below the existing forestay.

What is a running backstay on a yacht?

A running backstay is a removable stay that provides aft support to the mast from either the masthead or the point at which an inner forestay is attached. It originated as a response to the material limits of the period.