The Standing Rigging On A Sailboat Explained

The standing rigging on a sailboat is a system of stainless steel wires that holds the mast upright and supports the spars.

In this guide, I’ll explain the basics of a sailboat’s hardware and rigging, how it works, and why it is a fundamental and vital part of the vessel. We’ll look at the different parts of the rig, where they are located, and their function.

We will also peek at a couple of different types of rigs and their variations to determine their differences. In the end, I will explain some additional terms and answer some practical questions I often get asked.

But first off, it is essential to understand what standing rigging is and its purpose on a sailboat.

The purpose of the standing rigging

Like I said in the beginning, the standing rigging on a sailboat is a system of stainless steel wires that holds the mast upright and supports the spars. When sailing, the rig helps transfer wind forces from the sails to the boat’s structure. This is critical for maintaining the stability and performance of the vessel.

The rig can also consist of other materials, such as synthetic lines or steel rods, yet its purpose is the same. But more on that later.

Since the rig supports the mast, you’ll need to ensure that it is always in appropriate condition before taking your boat out to sea. Let me give you an example from a recent experience.

Dismasting horrors

I had a company inspect the entire rig on my sailboat while preparing for an Atlantic crossing. The rigger didn’t find any issues, but I decided to replace the rig anyway because of its unknown age. I wanted to do the job myself so I could learn how it is done correctly.

Not long after, we left Gibraltar and sailed through rough weather for eight days before arriving in Las Palmas. We were safe and sound and didn’t experience any issues. Unfortunately, several other boats arriving before us had suffered rig failures. They lost their masts and sails—a sorrowful sight but also a reminder of how vital the rigging is on a sailboat.

The most common types of rigging on a sailboat

The most commonly used rig type on modern sailing boats is the fore-and-aft Bermuda Sloop rig with one mast and just one headsail. Closely follows the Cutter rig and the Ketch rig. They all have a relatively simple rigging layout. Still, there are several variations and differences in how they are set up.

A sloop has a single mast, and the Ketch has one main mast and an additional shorter mizzen mast further aft. A Cutter rig is similar to the Bermuda Sloop with an additional cutter forestay, allowing it to fly two overlapping headsails.

You can learn more about the differences and the different types of sails they use in this guide. For now, we’ll focus on the Bermuda rig.

The difference between a fractional and a masthead rig

A Bermuda rig is split into two groups. The Masthead rig and the Fractional rig.

The Masthead rig has a forestay running from the bow to the top of the mast, and the spreaders point 90 degrees to the sides. A boat with a masthead rig typically carries a bigger overlapping headsail (Genoa) and a smaller mainsail. Very typical on the Sloop, Ketch, and Cutter rigs.

A Fractional rig has forestays running from the bow to 1/4 – 1/8 from the top of the mast, and the spreaders are swept backward. A boat with a fractional rig also has the mast farther forward than a masthead rig, a bigger mainsail, and a smaller headsail, usually a Jib. Very typical on more performance-oriented sailboats.

There are exceptions in regards to the type of headsail, though. Many performance cruisers use a Genoa instead of a Jib, making the difference smaller.

Some people also fit an inner forestay, or a babystay, to allow flying a smaller staysail.

Explaining the parts and hardware of the standing rigging

The rigging on a sailing vessel relies on stays and shrouds in addition to many hardware parts to secure the mast properly. And we also have nautical terms for each of them. Since a system relies on every aspect of it to be in equally good condition, we want to familiarize ourselves with each part and understand its function.

Forestay and Backstay

The forestay is a wire that runs from the bow to the top of the mast. Some boats, like the Cutter rig, can have several additional inner forestays in different configurations.

The backstay is the wire that runs from the back of the boat to the top of the mast. Backstays have a tensioner, often hydraulic, to increase the tension when sailing upwind. Some rigs, like the Cutter, have running backstays and sometimes checkstays or runners, to support the rig.

The primary purpose of the forestay and backstay is to prevent the mast from moving fore and aft. The tensioner on the backstay also allows us to trim and tune the rig to get a better shape of the sails.

Shrouds

The shrouds are the wires or lines used on modern sailboats and yachts to support the mast from sideways motion.

There are usually four shrouds on each side of the vessel. They are connected to the side of the mast and run down to turnbuckles attached through toggles to the chainplates bolted on the deck.

• Cap shrouds run from the top of the mast to the deck, passing through the tips of the upper spreaders.
• Intermediate shrouds run from the lower part of the mast to the deck, passing through the lower set of spreaders.
• Lower shrouds are connected to the mast under the first spreader and run down to the deck – one fore and one aft on each side of the boat.

This configuration is called continuous rigging. We won’t go into the discontinuous rigging used on bigger boats in this guide, but if you are interested, you can read more about it here.

Shroud materials

Shrouds are usually made of 1 x 19 stainless steel wire. These wires are strong and relatively easy to install but are prone to stretch and corrosion to a certain degree. Another option is using stainless steel rods.

Rod rigging

Rod rigging has a stretch coefficient lower than wire but is more expensive and can be intricate to install. Alternatively, synthetic rigging is becoming more popular as it weighs less than wire and rods.

Synthetic rigging

Fibers like Dyneema and other aramids are lightweight and provide ultra-high tensile strength. However, they are expensive and much more vulnerable to chafing and UV damage than other options. In my opinion, they are best suited for racing and regatta-oriented sailboats.

Wire rigging

I recommend sticking to the classic 316-graded stainless steel wire rigging for cruising sailboats. It is also the most reasonable of the options. If you find yourself in trouble far from home, you are more likely to find replacement wire than another complex rigging type.

Relevant terms on sailboat rigging and hardware

Spreaders

The spreaders are the fins or wings that space the shrouds away from the mast. Most sailboats have at least one set, but some also have two or three. Once a vessel has more than three pairs of spreaders, we are probably talking about a big sailing yacht.

Turnbuckle

A turnbuckle is the fitting that connects the shrouds to the toggle and chainplate on the deck. These are adjustable, allowing you to tension the rig.

Chainplate

A chainplate is a metal plate bolted to a strong point on the deck or side of the hull. It is usually reinforced with a backing plate underneath to withstand the tension from the shrouds.

Mast head

The term mast head should be distinct from the term masthead rigging. Out of context, the mast head is the top of the mast.

Toggle

A toggle is a hardware fitting to connect the turnbuckles on the shrouds and the chainplate.

How tight should the standing rigging be?

It is essential to periodically check the tension of the standing rigging and make adjustments to ensure it is appropriately set. If the rig is too loose, it allows the mast to sway excessively, making the boat perform poorly.

You also risk applying a snatch load during a tack or a gybe which can damage the rig. On the other hand, if the standing rigging is too tight, it can strain the rig and the hull and lead to structural failure.

The standing rigging should be tightened enough to prevent the mast from bending sideways under any point of sail. If you can move the mast by pulling the cap shrouds by hand, the rigging is too loose and should be tensioned. Once the cap shrouds are tightened, follow up with the intermediates and finish with the lower shrouds. It is critical to tension the rig evenly on both sides.

The next you want to do is to take the boat out for a trip. Ensure that the mast isn’t bending over to the leeward side when you are sailing. A little movement in the leeward shrouds is normal, but they shouldn’t swing around. If the mast bends to the leeward side under load, the windward shrouds need to be tightened. Check the shrouds while sailing on both starboard and port tack.

Once the mast is in a column at any point of sail, your rigging should be tight and ready for action.

If you feel uncomfortable adjusting your rig, get a professional rigger to inspect and reset it.

How often should the standing rigging be replaced on a sailboat?

I asked the rigger who produced my new rig for Ellidah about how long I could expect my new rig to last, and he replied with the following:

The standing rigging should be replaced after 10 – 15 years, depending on how hard and often the boat has sailed. If it is well maintained and the vessel has sailed conservatively, it will probably last more than 20 years. However, corrosion or cracked strands indicate that the rig or parts are due for replacement regardless of age.

If you plan on doing extended offshore sailing and don’t know the age of your rig, I recommend replacing it even if it looks fine. This can be done without removing the mast from the boat while it is still in the water.

How much does it cost to replace the standing rigging?

The cost of replacing the standing rigging will vary greatly depending on the size of your boat and the location you get the job done. For my 41 feet sloop, I did most of the installation myself and paid approximately $4700 for the entire rig replacement.

Can Dyneema be used for standing rigging?

Dyneema is a durable synthetic fiber that can be used for standing rigging. Its low weight, and high tensile strength makes it especially popular amongst racers. Many cruisers also carry Dyneema onboard as spare parts for failing rigging.

How long does dyneema standing rigging last?

Dyneema rigging can outlast wire rigging if it doesn’t chafe on anything sharp. There are reports of Dyneema rigging lasting as long as 15 years, but manufacturers like Colligo claim their PVC shrink-wrapped lines should last 8 to 10 years. You can read more here.

Final words

Congratulations! By now, you should have a much better understanding of standing rigging on a sailboat. We’ve covered its purpose and its importance for performance and safety. While many types of rigs and variations exist, the hardware and concepts are often similar. Now it’s time to put your newfound knowledge into practice and set sail!

Or, if you’re not ready just yet, I recommend heading over to my following guide to learn more about running rigging on a sailboat.

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