What range do you have?

[Firefly625]

I was looking at a boat for sale, the first leg of a delivery to my home port would be about 170nm. At true displacement speed, it would have the range, but would take foreeeeever. I'd do it at about 10 knots, its not a planing boat, but at that speed, I reckon the fuel range is marginal


What range do you have at displacement speed and at your usual cruising speed?

Ben, Tulana has averaged 13.5lph over the entire season yet again, but with brimming tank of 450litres, head off at 11.5knots then consumption more like 16lph so 28hours to drain tank you may have covered just over 320 miles so 250miles safe.

edited bit
sorry, forgot displacement speed.....6 knots circa 7lph, 64 hours worth, 385 miles... take off a safe margin 300 miles..

is it what I think it is..?

 

[MapisM]

I was looking at a boat for sale, the first leg of a delivery to my home port would be about 170nm. At true displacement speed, it would have the range, but would take foreeeeever. I'd do it at about 10 knots, its not a planing boat, but at that speed, I reckon the fuel range is marginal

If you're not willing to accept long cruising timeframes, you'd better look at planing boats, I reckon...
Besides, also at 10kts and with a 170Nm passage, you obviously must consider some darkness cruising and wait for a decent whether window anyway.
Why not just leave in the morning, cruise at 7 to 8 knots, and arrive the morning after?

 

[longjohnsilver]

It’s winter in England and English winter weather!!

 

[IDAMAY]

600 nm at 7.5 kts (which is our overall cruising speed) with a 20% safety margin from 2500 litre tanks.

How far we would get at a cruising speed of 12 kts doesn't really bear thinking about.

 

[Deleted User YDKXO]

About 1000nm @ 9kts, 350nm @ 21kts

If this boat can only do 170nm at displacement speed, it must have a very small tank for the size of boat

 

[Portofino]

360 miles @ 30 knots , 377 @ 28 knots and 400 @ 24 knots
650 @ 9 knots .

 

[tillergirl]

me about 300mls @ 7 kts

Im surprised Tillergirl can attain 10kts & cruise @ 7.5

Yes but you have mistaken the boat! Never have an assumption.

 

[burgundyben]

Ben, Tulana has averaged 13.5lph over the entire season yet again, but with brimming tank of 450litres, head off at 11.5knots then consumption more like 16lph so 28hours to drain tank you may have covered just over 320 miles so 250miles safe.

edited bit
sorry, forgot displacement speed.....6 knots circa 7lph, 64 hours worth, 385 miles... take off a safe margin 300 miles..

is it what I think it is..?

Yes/No/Not sure! Its not a Bulldog. Its the Mitchell I emailed about.

If you're not willing to accept long cruising timeframes, you'd better look at planing boats, I reckon...
Besides, also at 10kts and with a 170Nm passage, you obviously must consider some darkness cruising and wait for a decent whether window anyway.
Why not just leave in the morning, cruise at 7 to 8 knots, and arrive the morning after?

Once its back in my home cruising ground, then plodding about at displacement speed, or running a bit quicker when needed is of no consequence. It just happens to be a long way from home. My cruising will be short distances with young family for the next few years at least.

 

[Firefly625]

not got the email..,

Or i don’t think I have?

 

[burgundyben]

not got the email..,

Or i don’t think I have?

Oh. Let me look.

 

[Fishtigua]

About 9500 nm, but we had designed her to spend a lot of time in the Pacific.

 

[MrB]

About 9500 nm, but we had designed her to spend a lot of time in the Pacific. View attachment 74556

That's quite a boat you have Fishigua, any more pics or details on her?

 

[BruceK]

That's quite a boat you have Fishigua, any more pics or details on her?

That's not a boat it's a ship!

 

[Fishtigua]

Ha, no guys, just one we built and crewed on around the world. Did the Leander G afterwards, bigger at 75m but less range at 8700nm.

 

[benchmark]

My semi displacement ( argueably planing) Boat has only a 200 Lit diesel tank , 200 hp Nanni diesel (Toyota) engine.
At cruise speed of 17-18 knots I use 1.8 liters /Nautical mile so range is about 110 Nm.
At displacement speed of 6-7 knots I use 0.6 liters per Nm so range is about 330 Nm.
In addition to the boats main tank I always carry an emergency 23 liters of diesel strapped fast in one corner of the engine room. I call this my ‘take me to land’ insurance if ever $hit hits the fan.

The boat also has an inbuilt 135 lit water tank that I almost never use and I have considered converting it to a second diesel tank by plumbing it to the main tank but with my short trips , diesel is never more than 3 hours away anywhere I sail in the Baltic.

 

[Bandit]

Aquastar48 cruise about 18 to 19 knots 410nm to empty.

With a sensible reserve a usable range of 360nm

 

[petem]

360 miles @ 30 knots , 377 @ 28 knots and 400 @ 24 knots
650 @ 9 knots .

How big are your tanks Porto?

 

[MapisM]

How big are your tanks Porto?

I was going to make the same question.
As I recall from a previous thread, PF mentioned that his typical fuel burn is 180 l/h at a cruise speed of 27/28 kts.
So, he should burn around 2500 litres to make 377Nm, and that's without considering any reserve.
Sounds like a helluva tankage, for a boat like his...

 

[petem]

I was going to make the same question.
As I recall from a previous thread, PF mentioned that his typical fuel burn is 180 l/h at a cruise speed of 27/28 kts.
So, he should burn around 2500 litres to make 377Nm, and that's without considering any reserve.
Sounds like a helluva tankage, for a boat like his...

Yep, his post failed the "sniff test" for me too .

 

[BruceK]

Who here doesn't self delude as to just how much fuel they are burning when the sun is out and they have the wind whipping their hair at 100, I mean 30, knots?
I just know I have 14 hours of fun till I have to pay the fiddler. How far I go depends on how many donuts I took to get there.