Forestay (sailing rigging component)
A forestay is a key piece of standing rigging on a sailing vessel that supports the mast and often carries a headsail; this article outlines its function, forms, materials, and role in different rig types.
Overview
A forestay, also called a jibstay or headstay, is a length of standing rigging that runs from a vessel's bow area to the mast to prevent the mast from falling aft. On a sailing vessel the forestay usually leads to the masthead or to a point partway up the mast in fractional rigs. Its tension and attachment points strongly influence mast rake and the fore-and-aft balance of the boat.
Function and parts
The forestay counteracts the pull of the backstay and shrouds. Typical components include an upper termination at the mast, a lower fitting at the bow or bowsprit, turnbuckles or hydraulic adjusters for tensioning, and often a luff or furling mechanism when a sail is hanked or reefed to it. It commonly fixes to the bow or a fitting on the stem; see the role of the bow in anchoring the lower end.
Materials and construction
Historically made from natural fiber rope then galvanized iron, modern forestays are most often made from stainless steel steel in either stranded wire form or as rod rigging for higher-performance yachts. Some boats use synthetic fiber leaders or composite standing rigging in specialized applications. Choice of material affects stretch, fatigue life, weight aloft and inspection needs.
Sails and rig types
A headsail such as a jib or genoa is typically set on the forestay; the terms sail, jib and genoa
- On a sloop the forestay commonly carries the single foremost headsail.
- On a cutter the inner staysail may be set on a stay inboard of the forestay while the outer jib uses the forestay or a bowsprit extension.
Practical considerations
Proper tensioning is vital for sail shape and mast support. Many boats use roller-furling systems fitted to the forestay for easy reefing and stowing of headsails. Inspecting the forestay for corrosion, broken strands, chafe and secure fittings is a routine safety task.
Notable distinctions
Unlike running rigging, which is adjusted frequently, the forestay is part of the standing rigging and is adjusted mainly for tuning. It works in concert with the backstay and side shrouds to form the triangulated support that keeps the mast upright and controls its bend characteristics.
Further reading and technical references are available from general rigging guides and manufacturer specifications: see resources on mast design and rig tuning at mast fundamentals and equipment suppliers linked under sailing vessel resources, or material choices discussed at stainless steel and wire suppliers.
Questions and answers
Q: What is a forestay?
A: A forestay is a piece of standing rigging on a sailing vessel that keeps the mast from falling backwards.
Q: What are some other names for forestay?
A: Some other names for forestay include jibstay and headstay.
Q: Where is the forestay usually attached?
A: The forestay is usually attached to the very top of the mast.
Q: Where is the other end of the forestay attached?
A: The other end of the forestay is attached to the bow of the boat.
Q: What is often attached to the forestay?
A: Often, a sail is attached to the forestay. This sail may be a jib or a genoa.
Q: What is a staysail?
A: In a cutter rig, the sail on the forestay is referred to as the staysail.
Q: What materials are used to make a forestay?
A: A forestay might be made from stainless steel wire or rod.
Author
AlegsaOnline.com Forestay (sailing rigging component) Leandro Alegsa
URL: https://en.alegsaonline.com/art/35648
Sources
- ypigroup.com : "YPI glossary"
- glen-l.com : "Rigging Small Boats, Chapter 2"
- cruisingworld.com : "Rig for a Staysail"
- sailboat-cruising.com : "Sailboat Rigging: Part 1 - Standing Rigging"