Why standing rigging deserves a close look before launch

Standing rigging lives in a punishing environment: cycling loads, salt-laden air, UV and constant motion. Failures rarely happen without warning. They begin as hairline cracks, crevice corrosion, a single broken wire or an elongated pin hole. A methodical inspection before the season lets you find those warnings while the boat is still in the yard or alongside.

Choose a calm, dry day. You will need good light, a torch, a magnifying glass, a small mirror, rags, leather gloves and a notebook. Photograph anything doubtful and note its location. Clean with a rag and inspect before reaching for any abrasive.

Chainplates, deck fittings and backing plates

Start at deck level. Chainplates take the load from shrouds and stays into the hull, and they are a common source of hidden trouble. Look closely where each chainplate passes through the deck. Rust weeping, cracked gelcoat or a dark stain around the fitting can point to crevice corrosion or water ingress. Stainless steel is not immune; deprived of oxygen in a damp crevice, it can corrode surprisingly quickly.

Below decks, inspect backing plates, knees and bolts. Look for elongated holes, dished washers, corrosion and movement between chainplate and structure. Check for damp or delaminated plywood. A chainplate that flexes independently of the deck under rig load is a serious finding. Cracks in the chainplate itself, especially at a weld or bend, mean stop and seek advice.

• Clean the chainplate and deck seal so you can see metal and sealant clearly.
• Check bolts and backing plates from inside the boat, not just the deck fitting.
• Look for rust, pitting, cracks, white or green corrosion products.

Swage terminals and wire

Swage terminals are compressed fittings at the ends of the wire. They are strong and reliable when made correctly, but they concentrate stress. Inspect each swage with a magnifying glass. Look for fine cracks, especially at the mouth where the wire enters. Cracks may run along the swage or around it. Rust staining at the junction is a warning, even on stainless wire.

Run a gloved hand or rag along the wire, but be careful: a broken strand can cut. A protruding broken wire, often called a meat hook, is a clear defect. Check for broken strands, flat spots, kinks and sharp bends. If a strand is broken at or near a terminal, replace that length. If a mechanical terminal is fitted, check the cone, threads and locking arrangement.

Turnbuckles, toggles and pins

Turnbuckles let you tune the rig, and their toggles allow movement as the mast pumps and hull flexes. Check that each toggle articulates freely. A seized or bent toggle forces wire and swage to bend, which can lead to fatigue cracking. Look at threaded ends for cracks, galling and corrosion. There should be adequate thread engagement inside the body; if threads are nearly fully exposed, the rig may be at the end of its adjustment or assembled incorrectly.

Inspect the turnbuckle barrel for cracks, especially around slots and threaded ends. Split pins, cotter pins and ring pins must be sound and correctly fitted. Replace any that are bent, corroded or missing, and do not reuse a split pin that has been opened and closed several times. Taping turnbuckles can protect sails and skin, but it can also hide corrosion, so inspect first.

• Toggle pins should be a snug fit, not worn oval, with holes not elongated.
• Threads should be clean and lightly protected, not packed with hardened grease.
• Check that turnbuckles are not fully extended or bottomed out.

Aloft: spreaders, masthead fittings and wear

Before going aloft, use binoculars from deck to scan for rust streaks, bent fittings and broken strands. If you are comfortable at height and have a proper bosun's chair or climbing system, go up with a second person on deck. Check spreader roots and tips. Wire often wears where it passes over a spreader tip, especially if the spreader boot is missing or misaligned. Look for broken strands, flattened wire and cracks in the spreader itself.

At the masthead, inspect the crane, forestay and backstay terminals, sheaves and halyard exits. Aluminium castings can crack, and stainless fasteners can corrode in aluminium. Look for white powder, pitting and cracks around bolt holes. Check cap shrouds and their terminals. Take photographs of anything doubtful, and do not rely on a quick glance from the pontoon.

When to call a professional rigger

Many checks are within the scope of a careful owner, but some findings need a professional. Call a rigger if you find cracks in a swage, turnbuckle or masthead fitting; broken wire strands at a terminal; cracks, movement or corrosion in a chainplate; or distortion in the deck around a rigging attachment. Also seek advice if the rigging is of unknown age, if the boat has been raced hard or sailed offshore, or if it has spent years in a marina without regular inspection. Stainless rigging does not last forever, and many insurers expect assessment or replacement after a decade or so.

A rigger can carry out a more detailed inspection, check the rig's tune, and advise on repairs or replacement. It is money well spent compared with the cost of a dismasting. If you are unsure, ask. A short delay in the yard is far better than discovering a cracked terminal off a lee shore. With a careful eye and the right help, you can start the season with confidence in your rig.