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Got a technical question or a boating query? Post your quandaries here and pick the brains of the WW team. You can also add your answers to others' questions, or browse through previous answers.

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Your "Electrical Audit Calculator" strange results

I've recently found your site and the Audit Calculator. And used them to check my own results from a spreadsheet I created.
Now, one of us might have a problem!
My results tally with yours in the 12V lights and appliance section but when I enter my values into your calc the values are way off
eg not taking into account inverter etc loses if I enter 230W for 1 hour into my sheet I get 1Ahr (1.25Ahr inc losses). But when I enter the same values into your system I get 21.3 Ahr WHAT!!!!
Would you please look into this and advise.
Many thanks

Asked by: Docara  | Wednesday 14 January, 1.55pm | 2 answers

Subscription no

Hi we are trying to find our subscription no so that we can log on to your web site can you please help. The no on the magazine packaging doesn't seem to work.
Regards im Bleasdale

Asked by: Jim Bleasdale  | Sunday 11 January, 11.29am | 1 answer

Adding antifreeze.

Hi Guys, I need to add some antifreeze to my 1496cc Kubota diesel engine cooling system. I'm familiar with changing car antifreeze but unsure about boats due to reading about "skin tanks" etc. Thanks.

Asked by: Trevor Smith  | Tuesday 16 December, 6.02pm | 2 answers

mercedes 55 hp

ehere can i find info on a mercedes 55 hp marine engine

Asked by: mick turner  | Thursday 11 December, 3.09pm | 4 answers

electrics - earthing

My domestic battery's are earthed to the engine viv the neg terminal. Which then go to shunt and busbar with no current running to earth. The starter battery earth is on the busbar but the alternator for the starter is earthed through the engine and I am getting current going to earth. What I would like to know is do I have to run a new lead from the alternator to the busbar to stop this, or does it not matter.

Asked by: anthony spanswick  | Monday 8 December, 12.25pm | 3 answers

boiler fitting

hello, could anyone tell me the rough price of buying and getting a boiler fitting in conjunction with an existing clorfier? I would need a whole cutting in the roof for the flu and all pipework undertaken.
many thanks in advance - Mark

Asked by: Mark Bromley  | Wednesday 3 December, 4.16pm | 1 answer

Narrowboat stove

Hi there,
I'm wondering if anyone recognises what make/model my stove is as I need to get the door repaired/replaced but cannot find any markings on it.
Many thanks

Asked by: Scott Campbell  | Monday 1 December, 2.38pm | 2 answers

pullman dinette build

best build method

Asked by: DAVID  | Sunday 23 November, 3.03pm | 1 answer


Could you suggest a suitable fixed battery charger for a boat with four 110ah leisure batteries, plus engine and bow thruster batteries.
I would appreciate makes and models that might fit the bill. Many thanks.

Asked by: Kevin Cracknell  | Saturday 22 November, 3.36pm | 1 answer


is there any stopages between sawley and Northampton

Asked by: janet alderson  | Wednesday 19 November, 10.20pm | 1 answer

Battery charging

My boat has 4 leisure batteries, but no fixed charger.it is currently in a marina with 240 v power available, will a normal car battery charger be sufficient to charge the battery bank, and if so how should it be connected? I am not intending to leave it on unless I'm there. I am currently having to run the engine to charge them, although I have two solar panels at this time of year they are not sufficient to make up for the power I use when aboard.

Asked by: Kevin Cracknell  | Tuesday 18 November, 4.15pm | 4 answers

Chimney choice

Reading the boat review in December 2014 issue there is reference to 'cruising' and 'mooring' chimneys. How do I decide which is the optimum size for each?

Asked by: Donald Starr  | Saturday 15 November, 12.26pm | 4 answers

Automatic bilge pump

Hi - I'm now the owner of NB "Jamdrew of Larkfield" and wish to ask two questions about the stern gland bilge pump. Can you recommend the best small auto level control pump 12V and the best non return valve to fit the overboard discharge pipe

Asked by: bill goad  | Thursday 13 November, 3.04pm | 7 answers

Thornycroft 60 valve clearances

Does anyone know what the valve clearances are for a Thornycroft 60 (3 cyl, 998cc) engine?

Asked by: Ian Burns  | Wednesday 12 November, 7.31pm | 1 answer

Hull Blacking

I plan to black the hull of my 40ft narrow boat this November. Can you please tell me if I need to black the base plate as well as the hull sides?

Asked by: John Phillip Lloyd  | Monday 3 November, 3.38pm | 2 answers

Nanni Engine

i'm looking into buying a 55ft trad with a Nanni engine, however i've not come across this make of engine before, are they any good, and are they widely serviced?
Cheers M

Asked by: Mark Bromley  | Saturday 1 November, 2.14pm | 3 answers

double glazing

How efective is double glazed windows in stopping condenstation

Asked by: george  | Wednesday 29 October, 1.53pm | 1 answer

Gas hob

I'm fitting a new kitchen on a narrowboat. Can I use a natural gas domestic hob using propane or do I need to buy a hob made specifically for a boat? Thanks, Jo

Asked by: joannagreen  | Wednesday 29 October, 1.41pm | 3 answers


We have bought a35 ft liverpool narrow boat with a 20hp beta.the handbook says it has a 20amp alternator.we have an electric fridge and no tv, is the alternator big enough or perhaps a solar panel would help to charge batteries.it seems ok up until now, about six months

Asked by: ken button  | Thursday 23 October, 6.46pm | 2 answers

What size and type of anchor

I need to buy a new anchor for my narrowboat - 58', 16 tonnes. The question is what type and size of anchor? I have used Danforth anchors on boats in the past but on a narrowboat I find the projecting ends of the cylindrical bar at the bottom of the flukes is a nuisance. A "French" or "grip" anchor is an alternative. Another option is a folding grapple anchor which may be a better option for rivers. Your thoughts please on the type and weight of anchor.
The next question is then what length of anchor chain? I presume that the length will depend largely on the weight of chain and I see that one of the standard sizes which seems to be offered by chandleries is 3/8". Could you please advise me on the length of chain needed for the suggested anchor matched with my boat?
Thank you.

Asked by: Terry  | Thursday 23 October, 4.36am | 2 answers

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