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The Norfolk Broads Forum / Hire Boats Q & A / Hire Boat Fuel Consumption
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Posted By Discussion Topic: Hire Boat Fuel Consumption

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BryanW
Jun-04-2013 @ 1:36 PM                           Permalink
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Fens Fatale
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Since the main season is just about here I thought I would mention how
economical a boat can be in terms of diesel consumption.  I know last year
that a lot of people seemed to have to pay for additional fuel over and
above their deposit, I can only assume that they were dashing about at
high revs.

During our week in April on a 29ft, 2 berth, hydraulic drive boat, with the
following itinerary we used 23 litres at a cost of £33.23, no heating was
used (got an extra duvet from the yard) so this is purely propulsion.  
Obviously this yard is at the high end for diesel price but I’m not
complaining.  I should point out that we usually just potter about at about
3 - 4mph only opening the throttle up when we need to pass a tacking
yacht and over the years have always quite surprised the yard with our low
consumption.

Sat       - Wroxham to Cockshoot
Sun       - Cockshoot to Gays Staithe (via Ranworth)
Mon       - Gays Staithe to Womack Staithe (via South Walsham Broad)
Tues       - Womack Staithe to Neatishead
Wed       - Neatishead to Sutton Staithe (via Dilham)
Thurs - Sutton Staithe to Gays Staithe (via How Hill)
Fri       - Gays Staithe to Wroxham (via Ranworth)

Just take it easy, it is a holiday and the Broads are to be enjoyed at a slow
pace.

Edit:  Just noticed that the links did not come out correct.


Bryan

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http://www.youtube.com/user/BryanWillmore


This message was edited by BryanW on Jun-4-13 @ 2:45 PM

ncsl
Jun-04-2013 @ 1:48 PM                           Permalink
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Thanks for the info Bryan.

What would be really good is if any of the hire boats had an engine hours run meter on board.
You could then tell how many hours you got for the amount of fuel used.

May be a bit more interesting as that is what uses the fuel. Running the engine whilst moored maybe was not taken into the usage?

I have a Freeman 23 - petrol - an I know I get 2.5 hours running on a gallon of fuel.
That way I can work out the distance I can travel on a full tank.
More important due to it being petrol.
I will be traveling south in a few days time so I can work out consumption of say Stalham to Oulton Broad, about an 8 hour trip approx. so would use about 3 gallons.


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BryanW
Jun-04-2013 @ 2:35 PM                           Permalink
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The boat we usually hire does have a running hours meter so I will try and remember to make a note later this month when we are back again.

We usually cruise for 3 to 4 hours per day and it is very, very rare for us to run the engine whilst moored, we always shower late afternoon or early evening so no need for hot water in the morning (just boil a kettle for the breakfast washing up).


Bryan

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Still-Cruising
Jun-04-2013 @ 3:05 PM                           Permalink
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Hi.
It never ceases to amaze me the differences in fuel consumption that people seem to get even taking tide into consideration.  Overall hydraulic drive or at least the ones that I have had anything to do with seem to use more fuel that shaft drive in similar conditions. Our Seamaster 30 has the original BMC1.8 diesel with shaft drive. Because we can’t dip the tank we have always kept rough hours to engine use count in our daily log book and then compared it to the amount of fuel need to top up the tank. A couple of years ago I fitted an hour meter that runs of the ignition so all engine running is recorded. Over the course of a year it works out to a fuel usage of 2litres per hour overall. The ebber heater uses 0.5litres per hour.


Best Regards

Bob

PO20 But NR12 as much as possible.

JennyMorgan
Jun-04-2013 @ 4:29 PM                           Permalink
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Hunters, Whelptons and Martham Boats all hire boats with very, very, very low fuel consumption! boat-sail

Jenny Morgan,
A vane, a boat, but not a
bird.

http://www.drascombe-association.org.uk/drascombes.php

londonrascal
Jun-04-2013 @ 5:39 PM                           Permalink
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I’ve so far never had to pay over the top of a fuel deposit paid.  I have however topped up with fuel twice at two different yards which both charged the same as my home yard per litre of fuel.

My experiences  (and I can't remember off top of head how much litres were used) are:


August 2012 - 3 nights Salerno 30ft 'bathtub' 38HP hydraulically driven Nanni engine..

Heating used once in morning of second day.

Stalham to Horning - Horning to Wroxham - Wroxham to Potter Heigham - Potter Heigham to Nettishead - Nettishead to Stalham.

Cost of fuel: £53.00 (and some pence)


March 2013 - 4 nights San Selino 37ft 'bathtub' 38HP shaft driven Nanni engine.

Extensive use of heating (was cold March)

Stalham to Womack Water - Womack Water - Potter Heigham - Potter Heigham - Wroxham (via Ranworth) - Wroxham to Cockshoot Dkye - Cockshoot Dyke to Stalham.

Cost of fuel: £74.00 (and some pence).


April 2013 Distant Horizon 32ft 'Duel steer' 37hp  shaft driven BMC engine.

Moderate use of heating most evenings.

Acle to Womack Water - Womack Water to Brammerton Common - Brammerton Common to Acle Bridge - Acle Bridge  - Potter Heigham – Potter Heigham – Stalham.  Stalham – Wroxham – Wroxham – near How Hill.  How Hill – Ranworth – Ranworth Womack Water – Womack Water - Stokesby – Stiokesby – Acle.  

Cost of fuel: £40.00 top up at Royalls - £84.00 from yard – Total £124.00


May 2013 – Belmore – 30ft ‘Stedan’ 40HP shaft driven Nanni engine.

Some use of heating 1 night and 1 morning.

Wroxham – Womack Water – Womack Water – Potter Heigham – Potter Heigham – Ranworth – Ranworth - Hoveton Little Broad - Hoveton Little Broad – Wroxham – Wroxham - Hoveton Little Broad -  Hoveton Little Broad – Womack Water – Womack Water – Wroxham – Wroxham – Horning – Horning – Salhouse Broad – Salhouse Broad – Wroxham

Cost of fuel: £60.00


I should add that it is often the case I will run the engine when moored periodically to aid batteries if using the heating a lot (and why I like 'wild moorings') so not to disturb anyone and on days where I have traveled little will ensure the engine has been run at least 4 hours.  My most recent trip in one day I estimated the engine to have been run for 7 hours.

I’ve no idea what that means other than I seem to do a lot of doubling back on myself and likely waist fuel and thus money .  

Take note that the average 3KW heater on a boat is not usually variable (it is on or off) and when on will be on ‘high’ thus would estimate a Webasto using 40ml to 50ml of diesel per hour when on high.

The average ’new’ Nanni engine in a hire boat seems to be 38HP and would use about 1.5ltr to 2.0 ltr per hour depending of revs – most modern Nanni units are not much more economical when you look at their manufactures fuel consumption date between 900RPM and 1500ROM but things shoot up past that and past 2,000RPM are drinking it up like it is water.  

Bear in mind hydraulic drive will use fuel more (simple physics) just as automatic transmission cars use more fuel than manual cars, as your torque is being provided through the transfer of power through a liquid in the case of a car a Torque Converter in a boat a pump to drive a hydraulic motor to turn the propeller.  It has been said that older engines while not as clean burning or quiet use less fuel at lower RPM’s.

I think you would have to be using a lot of heating and a lot of engine hours to (in a week) use up a £150.00 fuel deposit.  However, some boats I have see have £200.00 fuel deposits and diesel gen sets to provide 240v – and even the boiling of a kettle requires electricity thus engine/gen to be run.  


|  Robin  |

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This message was edited by londonrascal on Jun-4-13 @ 6:48 PM

uitmis
Jun-04-2013 @ 6:23 PM                           Permalink
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Well, here's our itinerary for 11 days on Major Gem 2 from 13th May. We used the heating every day for, on average, a total of an hour to an hour and a half per day.

Day 1 Stalham to St Benet's

Day 2 St Benet's to Somerleyton

Day 3 Somerleyton to Beccles

Day 4 Beccles to Worlingham

Day 5 Worlingham to Loddon to Pye's Mill

Day 6 Pye's Mill to Womack to Potter Heigham

Day 7 Potter Heigham to Perci's island

Day 8 Perci's island to Salhouse to Ranworth island

Day 9 Ranworth island to Wroxham to Wroxham Broad to Perci's island

Day 10 Perci's island to Sutton Staithe

Day 11 Sutton Staithe to Barton Broad to Wayford Bridge

Day 12 Wayford Bridge to Stalham

Fuel deposit £150, total returned £71.  So we used a grand total of £79 worth of fuel.

I have to say, we took it pretty slowly and the engine, I think, was brand new - it certainly looked it when we were shown it during the trial run.  





rustic
Jun-04-2013 @ 8:08 PM                           Permalink
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Quote" A couple of years ago I fitted an hour meter that runs of the ignition so all engine running is recorded. "


Depending how it is wired, wiring it to the ignition switch only lets you know how many hours the switch has been in this position, and not necessarily how many hours the engine has been running.

To get over this problem on my Honda outboard, I looked at the schematic and noticed that the oil pressure switch went to ground when the engine was running, so I used this to earth my hour meter.

This way the hour meter records only true running hours.

Hope this helps,


best regards, Richard.
I can't wait to be back on our boat on
the Broads.

Maffman100
Jun-04-2013 @ 8:23 PM                           Permalink
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We were out on Evening Shadow last week which has  a good old Perkins 4108 on a shaft.

We went:
Wroxham-womack-Potter-Ranworth-Stalham-horning-womack - Ranworth - Wrexham.

We did us the heater on occasions and the grand total was 33 litres.

Matt

http://flic.kr/g/fMF1K

norfolkcottageh
Jun-04-2013 @ 8:28 PM                           Permalink
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Some interesting points. Here's some more.

People on short breaks predominantly use more fuel pro-rata (and often overall) than  people out for a week or more.

The reason is simple; it's the remarkable desire to get as far as they can in as little time as possible and see as much as they can.

Therefore, they travel for longer to get futher and, consequently, see less as they don't have any time to linger and really explore.

I had this chat with someone over the weekend. They said they'd seen the whole southern broads in about 4 days. I told them that they've seen comparatively little; they've pass lots of things and maybe "seen", but they've not "been".

Andy

Just because you can dosen't mean you should.

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