Boat fuel prices in the UK: marinas, boatyards and canal pontoons

directions_boat What you can do

map Boat fuel on the map

Switch to Boat diesel or Boat petrol and the map shows the price at each pontoon, boatyard and canal-side fuel point near you. Tap a site to see each product's price, its age, how many boaters confirmed it and the declaration a diesel price was quoted under.

The same app shows LPG, EV charging and forecourt prices for the drive to the water.

sailing 60/40, domestic and propulsion: duty declarations explained

Marine diesel in Great Britain is usually sold as red (rebated) diesel, and the duty you pay depends on what you tell the seller the fuel is for. Fuel that moves the boat carries the full rate of fuel duty; fuel for heating, cooking or a generator is charged at the much lower rebated rate. So when you buy, the seller asks for a duty declaration, and the price per litre depends on it.

60/40 split

Most leisure boats have a single tank that feeds both the engine and the heating. For them, a 60/40 split is the commonly used declaration: 60% of the fuel is treated as propulsion at full duty and 40% as domestic at the rebated rate. It is a convenience, not a fixed rule: if your real use is different, you can declare a different split.

Domestic

Fuel declared wholly for heating and other non-propulsion use, such as a separate tank for a stove or a generator. It is the cheapest of the three because none of it carries the full duty.

Propulsion

Fuel declared wholly for moving the boat. It carries the full rate of duty, so it is the most expensive of the three.

Why the same pontoon shows three prices

The three prices at one yard differ by the whole of the fuel duty, so a headline price means little without its declaration. FillRadar shows the declaration with every diesel price, and leads with 60/40 where a site has several, because that is what most leisure boaters declare.

directions_boat Boat fuel: Solent and the Isle of Wight

Marina fuel berths from the Hamble and Southampton Water to Portsmouth, Chichester Harbour and the Isle of Wight. Most sell diesel and many sell petrol too; tides and berth opening times matter more here than on inland waters. FillRadar lists 4 fuel points here at the moment.

• MDL Hythe Marina Village diesel, petrol
• MDL Northney Marina diesel
• MDL Port Hamble Marina diesel, petrol
• MDL Sparkes Marina diesel, petrol

directions_boat Boat fuel: River Thames and the Wey

Marinas and boatyards along the non-tidal Thames, from Abingdon through Reading, Henley, Bray and Windsor to Penton Hook and Shepperton, plus the River Wey. FillRadar lists 10 fuel points here at the moment.

• Abingdon Bridge Marine · Abingdon diesel
• Better Boating · Caversham diesel
• Caversham Boat Serv's · Reading diesel
• Hobb's Boatyard · Henley diesel
• MDL Bray Marina · Bray diesel, petrol
• MDL Penton Hook Marina diesel, petrol
• MDL Windsor Marina · Windsor diesel, petrol
• Pyrford Marina · Woking diesel
• Shepperton Marina · Shepperton diesel
• Thames & Kennet · Caversham Lakes diesel

directions_boat Boat fuel: Norfolk and Suffolk Broads

Boatyards on the Broads rivers and lakes. FillRadar has no fuel points here yet: none of the sources it uses lists one. If you know a Broads boatyard that sells fuel, email support@fillradar.co.uk and we will add it.

directions_boat Boat fuel on the canals and rivers

Canal-side boatyards and marinas across England and Wales: 135 fuel points on 37 waterways, listed by waterway with the lock, bridge or place boaters know them by. Most sell diesel under the three declarations; few sell petrol. Many are placed on the map using OpenStreetMap data, © OpenStreetMap contributors (ODbL); bridge and lock names contain Canal & River Trust data under the Open Government Licence v3.0.

directions_boat Boat fuel elsewhere on the coast

Harbours and marinas outside the Solent, from the West Country and Dorset to Kent, the Bristol Channel and the north-east: 10 fuel points.

• Dover Marina fuel berth · Red and white diesel, E10 petrol diesel, petrol
• MDL Brixham Marina diesel
• MDL Chatham Maritime Marina diesel, petrol
• MDL Cobb's Quay Marina diesel, petrol
• MDL Queen Anne's Battery diesel, petrol
• MDL Woolverstone Marina diesel
• Penarth Marina fuel berth diesel, petrol
• Portishead Marina fuel pontoon diesel, petrol
• Royal Quays Marina fuel berth · Approach channel, seaward of the lock gates · VHF 80 diesel, petrol
• Sibleys fuel kiosk, St Mary's Quay · In front of the harbour building · VHF 12 diesel, petrol

database Where the data comes from

No UK scheme publishes boat fuel prices, so each figure was reported by a boater, or added from another published source and shown with its date. A boater's newer report replaces an older figure, and other boaters can confirm a price or mark a product as unavailable.

Sources: AFMM, MDL Marinas and operators' own websites.

Prices are unverified and change without notice, so treat each one as a guide.

quiz Boat fuel questions

How many boat fuel points does FillRadar show?

159 at the time of writing (October 2026): marina pontoons, boatyards and canal-side fuel points. The app looks up to 30 miles from where you are.

Where do boat fuel prices come from?

No UK scheme publishes boat fuel prices. Each figure was reported by a boater, or added from another published source and shown with its date. A boater's newer report replaces an older figure.

What do 60/40, domestic and propulsion mean?

They are the duty declarations that decide the price of marine diesel. Propulsion means the fuel is declared as driving the boat and carries full duty. Domestic means it is declared for heating and other non-propulsion use, at the lower rate. 60/40 is the split many leisure boaters declare, with part of the fuel declared for propulsion and the rest for heating. The declaration you make is your own legal responsibility.

What is a 60/40 diesel declaration?

It is the split most leisure boaters with one tank for engine and heating declare when buying diesel: 60% is treated as propulsion at the full rate of duty and 40% as domestic at the rebated rate. You can declare a different split if it reflects how you really use the fuel.

Why is domestic diesel cheaper than propulsion diesel?

Domestic diesel (for heating, cooking or a generator) is charged at the rebated rate of duty, while propulsion diesel carries the full rate. The difference between the two prices at a pontoon is roughly the whole of the fuel duty.

Are boat fuel prices verified?

No. Prices are boater reports or figures from other published sources, each shown with its date. Check the price, the declaration terms and whether the pontoon is open with the operator before you rely on a figure.

Can I report a boat fuel price?

Yes. Signed-in users can report a diesel or petrol price and the declaration it was quoted under, mark a product as unavailable, or confirm another boater's report. You need a confirmed email address or Google sign-in. Reporting is limited to three reports per product per site and ten in total a day, and a report from a brand-new account waits for another boater to confirm it.

Is it free?

Browsing boat fuel points and prices is free. Reporting needs a free account.

explore More from FillRadar

The same map shows petrol, diesel, LPG and EV charging.