NaCzarter Team
What is a forestay on a yacht?
The forestay is part of the standing rigging, in practice a steel wire, that holds the mast from the front: it runs from the bow to the upper part of the mast. From behind, the mast is usually held by the backstay, and from the sides by shrouds spread by spreaders, so together they hold it from four directions. On a charter yacht the forestay usually carries a jib rolled on a furler.
At the bow the forestay is attached to a fitting called the stemhead, and at the top to the mast: either at the masthead or a little lower, depending on the design. Forestays used to be made of hemp rope, later of galvanised steel. Today they are mostly stainless steel. Its job is simple. It stops the mast from falling backwards and, together with the other wires, keeps it upright while the sails are working in the wind.
Lines on a yacht fall into two families. Running rigging, meaning halyards and sheets, is hauled in and eased all through the trip. Standing rigging (forestay, backstay, shrouds) stays under tension and you normally leave it alone. A full glossary of working lines is in our article on what the lines on a yacht are called.
What is the difference between the forestay, backstay, shrouds and spreaders?
Sailors call the mast, lines and sails together the rig. Its fixed part, the standing rigging, holds the mast from four sides.
- The forestay holds the mast from the bow. Without it the mast would go backwards.
- The backstay runs from the masthead to the stern and stops the mast from leaning forward. Not every yacht has one. Some rigs have no backstay, and the shrouds and swept-back spreaders do that work instead.
- Shrouds are the side wires, running from the mast to fittings along the hull sides. They take the load when the yacht is sailing heeled over.
- Spreaders are rigid struts on the mast, one on each side. They push the shrouds outwards so the wire holds the mast at a better angle.
Standing rigging wires have turnbuckles or similar tensioners at the bottom. These are used to adjust the tension of the whole rig. On a charter you do not touch them, more on that below.
| Element | Where it is | What it does | Do you touch it on a charter |
|---|---|---|---|
| Forestay | From the bow to the upper part of the mast | Holds the mast from the front | Only when lowering the mast, following the harbourmaster's instructions |
| Backstay | From the masthead to the stern (not on every yacht) | Holds the mast from behind | No |
| Shrouds | From the mast to fittings along the hull sides | Hold the mast from the sides | No, not even when lowering the mast |
| Spreaders | Struts on both sides of the mast | Push the shrouds out and improve their angle | No |
| Jib furler | Drum at the forestay on the bow, line led to the cockpit | Rolls and unrolls the jib | Yes, every time you set or take in the jib |
| Mast lowering tackle | At the bow, design depends on the model | Lets you lower and raise the mast under control | Yes, before every low bridge, exactly as the harbourmaster showed you |
How does a furling jib and a headfoil work?
On charter sailboats hardly anyone hanks on a jib from a bag. It is rolled on a furler. A drum sits low down at the bow, and a line runs from the drum to the cockpit. Pull the line and the jib winds into a tight roll. Ease the line, trim the jib sheet and the jib unrolls.
You will come across two versions. In the simpler one the jib has its own wire in the luff and rotates around it, just behind the forestay. In the other, a furling jib on a headfoil, a grooved profile is fitted over the forestay. The jib's luff slides into this groove and the whole profile turns with the sail. This kind of jib bags less along the luff. It can also be partly furled when the wind picks up, although a heavily furled jib clearly performs worse.
Which version a particular yacht has, you will see at checkout, or you can ask the owner before booking. Either one is fine for Masuria.
One practical tip. If the furler resists, do not pull harder. Most often the line is jammed in a clutch, a sheet has caught on something on deck or a halyard has wrapped around the forestay. Stop, look up and towards the bow. A broken drum or a torn jib in the middle of the week is a much bigger problem than five minutes of checking.
When do you lower the mast in Masuria and what happens to the forestay?
At sea you rarely think about the forestay. In Masuria you do it regularly, because there are low bridges on the route and yachts pass under them with the mast lying on deck.
A few examples from our guides. A fixed bridge over the Piękna Góra Canal stands on the western route from Niegocin through Tajty to Lake Kisajno. The Sztynort bridge is waiting on the passage from Dargin to Kirsajty, described in our guide to Sztynort, Dargin and Dobskie. There are also low bridges over the canals on the route from Giżycko to Mikołajki: 37.2 km and five canals, covered in more detail in our article on Lake Tałty.
A lowered mast rests on a mast crutch, a support at the stern. Among the listings on NaCzarter for the 2026 season, 86 of 125 sailboats from 13 owners have a mast crutch for lowering the mast.
What does it look like in practice?
The mast is lowered backwards onto the crutch. The forestay is eased or detached the way the harbourmaster showed you at checkout, and the mast comes down slowly on the tackle. The shrouds stay in place. Before that you need to slacken or tie back the lazy jacks, the lines that stack the mainsail on the boom when you drop it. Otherwise they will tangle as the mast comes down. Among the listings on NaCzarter for the 2026 season, 120 of 125 sailboats from 16 owners have lazy jacks, so you will almost certainly have them too.
The safety rules are short. Nobody stands under the mast. One person holds the tackle firmly and does not let go, even if something jams. The first time, you practise in harbour, at the quay, not in the queue in front of a canal.
A scene you can see every August weekend: several yachts waiting in front of a low bridge. One crew lowers the mast smoothly, without a word. Another is only just unfolding the harbourmaster's notes. The mast finally lands on the crutch, the lazy jacks catch on the spreaders, and someone in the cockpit remarks that in Masuria the mast spends more time lying down than they expected.
To be fair, the procedure differs between models. This article gives you the principle, and the harbourmaster will show you the details at checkout. Lowering the mast for the first time in a canal, without practice and with other yachts behind your stern, is stressful. That is why you practise it beforehand.
Why is tacking called "zwrot przez sztag" in Polish?
The Polish name means "turning through the forestay". During this manoeuvre the bow of the yacht passes through the wind, and the bow is where the forestay is attached. That is the easiest way to remember it. How to do it and how it differs from the other manoeuvre is explained in our article on how to tack and gybe.
What should you check in the rigging at yacht checkout?
You do not need to be a rigger. Your eyes and fifteen minutes at the quay are enough.
- Split pins in the turnbuckles. At the bottom of the shrouds (and the forestay, if the furler does not cover it) every tensioner should be secured with a split pin or wire. Report any missing pin.
- Strands at the terminals. Look at the points where the steel wire goes into its end fitting. Single broken strands sticking out of the wire are a sign of wear.
- Furler. Unroll and roll up the jib once at the quay. It should turn easily, without jerking.
- Furled jib. The roll should be even and tight, with no loose corner of sail flapping in the wind.
What you do not do yourself: you do not slacken the shrouds or the backstay and you do not adjust rig tension. That is the owner's job. If something looks wrong, write it in the report, as described in our guide to yacht checkout and the handover report. A photo on your phone will not hurt either.
Frequently asked questions
What is a forestay on a yacht? It is a standing rigging wire, usually stainless steel, that runs from the bow to the upper part of the mast and holds it from the front. On a charter yacht the forestay usually carries a jib rolled on a furler.
What is the difference between the forestay and the shrouds? The forestay holds the mast along the centreline of the yacht, from the bow. The shrouds hold it from the sides, from the hull, and are spread by spreaders. Together with the backstay they make up the standing rigging.
Do you slacken the shrouds when lowering the mast? No. You ease or detach the forestay, as the harbourmaster shows you, and the shrouds stay in place. The details depend on the model, so always go through the procedure with the harbourmaster at checkout.
What is a headfoil and a furling jib? A furling jib is a jib rolled on a furler, and sailors often use the word for the furler itself too. With a headfoil, a grooved profile is fitted over the forestay and the jib's luff slides into the groove. The whole profile turns together with the sail.
Why is tacking called "turning through the forestay" in Polish? Because the bow, the end where the forestay is, passes through the wind. When you gybe, the stern passes through the wind instead.
