Know Exactly What You Own

Before you buy another fender or a coil of rope, it is worth being clear about the legal shape of your mooring. A private wharf attached to a converted barn or coastal cottage is rarely as simple as it looks. You may own the riverbed or foreshore freehold, or you may hold a licence or lease from a body such as the Crown Estate, the Marine Management Organisation or a local harbour authority. In some cases the mooring is a separate asset from the house, registered in its own right.

Dig out the deeds and any lease documents, and check three things in particular: the length of any lease, whether the mooring is transferable on sale, and whether there are restrictions on the type or size of vessel you can keep there. If you are on tidal water, confirm who owns the bed at low water — it is not always you. Keep copies of everything in a single file, alongside photographs of the structure as it stands today. That folder will earn its keep the first time you make a claim or sell the property.

A Year in the Life of a Mooring

Moorings fail slowly and then all at once, and almost always in the seasons when nobody is looking. A simple annual rhythm keeps you ahead of it.

• Spring: Walk the whole structure at low water. Check for winter damage, cracked stonework, lifted pointing, loose bolts, rotten timber and split fender boards. Pressure-wash algae and weed from slipways and steps, because green growth on a wet ramp is genuinely dangerous. Service winches, grease davit bearings and test ladders.
• Summer: This is the season of wear, not decay. Chafe on lines, scuffing on fenders and UV damage on ropes all accelerate in long daylight. Check lines after every period of strong wind or heavy use.
• Autumn: The proper time for a full inspection, while the weather is still on your side. Repaint, replace and tighten now rather than in January.
• Winter: Storms, surges and frost do the real damage. Reduce lines, double up, and remove anything that can be lifted by wind.

Lines, Fenders and the Details That Matter

Most mooring failures come down to chafe, not breaking strain. A rope rated far beyond your vessel's weight will still part in a single gale if it is rubbing across a sharp edge of stone or a corroded shackle.

Use nylon multiplait for mooring lines — it stretches, absorbs shock and copes well with tidal rise and fall. Fit anti-chafe sleeves or lengths of reinforced hose where lines pass through fairleads, over coping stones or around cleats. Allow enough slack for the full tidal range, but not so much that the vessel can build up momentum. A second, independently anchored line to a different point is cheap insurance and worth every penny.

• Check shackles for corrosion and seize pins with stainless wire so they cannot work loose.
• Fit sacrificial anodes to chains and submerged steelwork, and replace them before they are half gone.
• Inspect spliced eyes and swaged fittings annually — hairline cracks are easy to miss.
• Never rely on a single fixing point, however solid it looks.

Looking After the Structure Itself

Timber piles, stone quay walls, concrete slipways and floating pontoons each fail in their own way, and each has its own maintenance routine. Timber should be probed with a sharp tool at and just above the waterline, where rot and marine borer attack first; soft wood means replacement, not a coat of preservative. Stone and brick walls need re-pointing with a lime mortar appropriate to the original build, since hard cement traps moisture and accelerates spalling.

Keep drainage grips, gullies and surface water outlets clear all year round. Standing water behind a quay wall is one of the most common causes of slow structural failure, and it is almost invisible until the wall moves. If you have a slipway, keep it clear of silt, seaweed and gravel, and treat it as a working surface rather than a decorative one.

Insurance, Liability and Neighbours

Tell your insurer that you have a private mooring, and tell them again if you change what is moored there. Standard home policies often exclude liability arising from a mooring, so a separate third-party liability cover — typically for a few million pounds — is usually sensible, and is sometimes required by a lease or harbour authority.

Check whether your boat policy covers the vessel while moored, and whether it covers salvage and wreck removal. Keep written records of inspections and repairs; if a line parts and a neighbouring boat drifts, evidence of reasonable maintenance is your best defence. If your mooring shares a quay wall, pontoon or access path with neighbours, agree in writing who maintains what and who pays. A short, friendly agreement signed while everyone is still speaking is worth far more than a dispute settled later.

Preparing for the Worst

Keep an eye on Met Office warnings and local tide tables, and take particular notice of storm surge forecasts, which can add a metre or more to predicted high water. Before a named storm arrives, remove loose covers, burgees, fenders and deck gear, double up lines, and if the forecast is severe, consider moving the vessel to a sheltered berth or hauling out altogether.

Photograph the mooring and the vessel beforehand, note the time, and keep an emergency contact list to hand — harbour master, mooring contractor, insurer and a neighbour with a key. Afterwards, inspect at the first safe low water rather than waiting for daylight. Prompt attention to a chafed line or a shifted stone saves money, and it is far easier to fix in calm weather than in the middle of the next blow.