Keeping on an even keel

Sailing yachts rely on the keel to balance the weight of the mast and keep them upright. For fin or bilge-keeled yachts with external ballast, keel bolts are an integral part of their construction. Below are a few maintenance tips along with some internal checks that you could can easily out to spot any warning signs of weakness in the keel attachment before they become critical. For yachts with encapsulated keels, these checks are less critical, but equally worth checking from time to time.

Keel Bolts Maintenance 

Examine keel bolts, nuts, and washers closely and use a wire brush to remove any accumulated debris. Despite initial appearances, steel bolts may not experience significant material loss. Removal of nuts for a thorough inspection of threads may be required, do not attempt this without professional guidance! Pop into the boatcare office and have a chat with the chaps, they'll be happy to help and advise.

Rust Awareness 

Rust stains around stainless bolts warrant serious attention, expect corrosion if stainless steel keel bolts have been wet for an extended period. Take immediate action to investigate and address the issue. Rust stains around mild steel bolts warrant further investigation but may not present significant material loss.

Washer Condition 

Inspect washers for flatness, enlarged holes and retightened nuts can cause washers to deform. Cup-shaped washers suggest issues that need further investigation. Significant rust and corrosion can create gapping between the nut and the hull and require further action to address the issue.

Movement Detection 

Look for signs that the keel bolts have shifted. Check the hull for telltale marks and assess nut tightness with a hammer or spanner. Loose nuts may indicate potential problems.

Bilge Inspection 

Regularly check for water in the bilge. Leaking keel bolts, especially stainless steel ones, are a big red flag. Before addressing the bolts, investigate and eliminate other potential leaks like plumbing issues and check to see whether the water is salt or fresh.

Structural Changes 

Ensure sole boards fit properly, and doors open and close smoothly. Any changes may indicate hull deformation or weakened structures. Examine areas supporting the keel for cracks or signs of movement.

There are also a number of external checks that can be carried out once the boat is ashore. The boatcare team are well versed in both keel bolt inspection and keel removal and repair so please do not hesitate to ask if you would like further advice. Pop into the boatcare office, email them on portland@boatcare.co.uk or call them on 01305 818550 to find out more.