How much does it cost to install and maintain a permanent boat mooring?
I'm looking at putting down a permanent swinging mooring for my 34-foot sailing yacht in a tidal estuary. What sort of costs am I looking at for the initial tackle and laying it, plus the yearly upkeep?
Answer
Expect to pay between £1,000 and £3,000 to supply and lay a permanent swinging mooring for a typical 34-foot boat, depending heavily on the sinker weight and chain sizes required. Annual maintenance, including lifting, inspecting, and replacing worn shackles or riser chain, usually costs between £150 and £400.
Ground Tackle and Sinker Costs
Hardware forms the bulk of your initial outlay. A 34-foot yacht in a tidal estuary requires a sinker, heavy ground chain, a lighter riser chain, swivels and a mooring buoy.
- Sinker: A one-tonne concrete block costs around £150 in materials to cast yourself. It is bulky and prone to dragging in soft mud. A 400kg cast-iron train wheel or a Dor-Mor pyramid sinker digs in better but costs £400 to £700.
- Ground chain: This lies on the seabed to absorb shock and prevent the sinker lifting. You need 10 to 15 metres of 19mm or 24mm long-link galvanised chain. At £18 to £25 per metre, expect to pay roughly £300.
- Riser chain: This connects the ground chain to the buoy. Standard specification for a 34-footer is 12mm mid-link galvanised chain. Length equals your maximum high-water depth plus a 20% allowance for wave action. Budget £120 for 10 metres.
- Shackles and swivels: Avoid unbranded hardware. Buy forged, galvanised shackles from manufacturers like Green Pin or Crosby. A heavy-duty 16mm or 19mm mooring swivel and four rated shackles cost £100 to £150.
- Buoys and pendants: A Hippo or Polyform mooring buoy with a central steel rod costs around £120. Add £50 for a nylon pick-up pendant and a soft float.
Installation and Laying Fees
You cannot drop a one-tonne sinker from a dinghy. Never lay heavy tackle using your yacht's bow roller and windlass, as you will rip the deck fittings out. Hire a local mooring contractor with a workboat or a small barge. Expect to pay £300 to £600 for a professional to assemble the tackle, transport it and drop it accurately on your designated GPS coordinates.
Secure permission for the mooring trot before laying the tackle. UK sailors usually pay an annual fee to the local harbour authority or the Crown Estate. This fee ranges from £50 to £400 per year, depending on the location. A premium spot in the Solent costs significantly more than a quiet sea loch in Scotland. Factor this into your recurring budget.
Maintenance and Inspections
A mooring is only as strong as its most corroded shackle. Insurers usually insist on an annual inspection by a qualified contractor. This involves lifting the tackle to the surface, pressure washing it and checking for wear.