Whats your offshore boat fuel consumption ?

[Mister]

Oh about 3 slaves to the galleon

[Lancair]

Ive had to do conversions because I use Nm/L settings on my boat. Maybe Im old school educated but on the water or in the air, the nautical mile applies. I do understand why people use KM as a reference if they have no formal nautical or aeronautical training/experience but on the water, in navigation on water, the nautical mile is correct.
Anyway, whinge over, get off soapbox and back to reality of today, I get an overall average of 1.5km/L in my Tournament 1800 and Etec 115 with 14 3/4X17 prop. Thats from trolling at 6-8kts(10-14Km/h) to flat out 32-34kts (59-63km/h) Slightly better if only me on board.

[STUIE63]

5.5m galeforce with 90 etec approx 1.9 - 2 km/L I don't differentiate between moving back up a drift and the 2 hr cruise to the reef I just look at total distance travelled to fuel used

[Humdinger]

7 metre plate boat 225 evinrude average 1 kpl

[johncar]

Tournament 2100WA with 150 Yam 4s, Solas 15" 4 blade prop, I get @ 1nm per litre at any rpm between 3000 and 4000, in metric roughly 1.9km per litre. Thats with 2 or 3 onboard, 200 litres fuel. Slightly better when I go by myself.

Wish I still had that consumption, that is fabulous and I know you are telling the truth

Anyway current setup, 6.6 Fisher Maxi full hard top with a DF250 Suzuki, 16" x 20", 3 blade prop with 300 Litres of fuel, 100 litres of water and two on board and half the kitchen pantry @ approx 3800 - 4000RPM @ approx 23kn (43KPH) Fuel usage is 1.3 - 1.4 Litres per Nautical Mile, moderate conditions.

If my conversion is correct that is about 1.3 - 1.4 kms per litre for you modern guys.

Trying out a 4 blade 15 1/4" x 22" Solas shortly so it will be interesting to see if much difference but any slight improvement will be good, engine is slightly over reving now at WOT so this prop has been recommended to give the engine slightly longer legs and offshore stability. We will see as sson as this crappy weather pisses off..

[thelump]

Yaltacraft 555 with Yamaha 115/4 stroke. Loaded with 150 litres of fuel plus 2 x fishos and gear between 1.5 and 1.9 km/l so far. Last trip did between 130 and 140kms for 73 litres. Still playing with cruise speeds versus fuel economy etc and believe a different prop would give better economy and mid range power. Current prop Yamaha stainless K Series 17"pitch (13"Dia)

[Captain Seaweed]

I am surprised with some of these figures....I made a mistake once when I divided km travelled for the day by litres used. I forgot I drifted a lot in that day. In my new boat we get 1l/km as per engine computer. Sorry I mean old boat my new boat will probably burn 80+L/Hr but thats another pipedream


Marty

[MEGA'bite]

Boat in photo, 21.7 Trophy WA 150 yammie 4 stroke 321 ltrs fuel three blokes and gear running 15p 3 blade solas s/s prop 1.9 klm litre at 4700 rpm approx 48 klm per hr. same as above but running at 6000 rpm full noise 62 klm per hr burning 1 litre to the klm. I am happy with those results.

[thelump]

I am surprised with some of these figures....I made a mistake once when I divided km travelled for the day by litres used. I forgot I drifted a lot in that day. In my new boat we get 1l/km as per engine computer. Sorry I mean old boat my new boat will probably burn 80+L/Hr but thats another pipedream


Marty

The problem with the Yamaha Gauges/fuel management system is the speedo setup. Granted the LPH is pretty accurate the L/km depends on the speedo which can be pretty inaccurate if you are running into current. Do you run yours through your plotter Marty? BTW I saw your boat for sale yesterday. Any bites yet?

[Twosheds]

Cruise Craft 550 Outsider with 150 yammie HPDI, 2 or 3 on board plus gear and 140l fuel. Averages approx 1nm/litre including trip out and back plus stuffing around on the drift and reef. Doesn't seem to vary too much unless its glassed out.

[OPTI]

mine just went up 23 cents a klm today

[honda900]

Yalta 555HC , zuke 140, Solas 4 blade, 150ltr tank, 3-4 blokes and gear, average around 2.0ks per litre.

Regards
Honda.

[Jabba_]

5.9m Seafarer Vermont. 250hp E-tec.
Offshore average 1.5km/ltr. Moderate conditions
Offshore average 1.3km/ltr. Very rough.

Inshore average 1.7km/ltr.

[scoota]

Seafarer V-Sea, 70hp 4S Yammie, 2 pob 100ltrs fuel, 4700rpm at 40kph did 105km for 37 litre at 2.83km/litre was the last trip offshore and the best a solo trip of 155km for 47 litre at 3.3km/litre including flat bickies for 30 minutes on the way home 60kph...

Stoked...

Scoota...

[Midnight]

33 Bertram, Cat 3208 diesels, at 18kts I get 0.23Nm/L, or as I look at it 4.2L/Nm.

At 7kts 0.73Nm/L, or 1.38L/Nm.

I find using L/nm more relevant when at sea, you can look at the distance you need to travel and work out very quickly the fuel required in you head.

A 2 hour run each way, and 10hrs of lure/teaser trolling at 1000rpm, a shade over 7kts, is a 420L day.
Fishing out of Port Stephens recently, only running 24nm and then pulling skip baits all day,just in gear at idle 5.5kts, we were down to 260-280L/day for a 13hr day, which was nice.

Cheers,
Myles