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Old 04-10-2011, 12:35 PM   #21
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RE: Your trawler's range

1350 GALLONS...10% RESERVE leaves me with just over 1200 gallons.

3gph at 7.5kts Including the generator, 3000nm range running the genset the whole time and leaving a reserve.....we have only put fuel onboard once in two years but have been doing alot of work to the boat as well. ....
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Old 04-10-2011, 01:13 PM   #22
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Your trawler's range

Full cruise is 15 knots, but we spend much of our time at 8.5 knots, which gives us about four hundred miles with a hundred gallon reserve.

The USCG recommends one third of your capacity be kept for reserve. Seems like overkill, but since it poses no problem to us with a three hundred gallons total, we stick with that.


-- Edited by Carey on Sunday 10th of April 2011 01:16:35 PM
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Old 04-10-2011, 02:47 PM   #23
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RE: Your trawler's range

I have 150 gal. and burns 1.3 gal/Hr. so i am good for 700 miles at 6 1/2 knots.
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Old 04-10-2011, 07:32 PM   #24
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RE: Your trawler's range

135 hp perkins. 300+ gallons. Good enough range for me.
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Old 04-10-2011, 07:35 PM   #25
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RE: Your trawler's range

Quote:
DavidM wrote:
My Cape Dory 28 burns about 9 gph (it's a gasser) at 12 kts. With its 100 gallon tanks this gives me a range of about 120 NM. But our cruising envelope is only about 30 miles.

David
*I love the Cape Dory 28. We would have one today if it weren't for the previous owner lacking the ability to decide if he really wanted to sell. That one had a 175 horse Volvo. I believe she was an eleven knot boat.

*
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Old 04-11-2011, 11:03 AM   #26
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RE: Your trawler's range

4 tanks, (2) 500 gallon and (2) 300 gallon tanks that are normally empty for a total of 1600 gallons.* I get about 1.8 miles per gallon at 9.5 knts for a total of 2880 miles.
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Old 04-11-2011, 11:04 AM   #27
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RE: Your trawler's range

*
The Eagle holds 1200 gallons and gets about 2 mpg or 2400 miles.* The last couple of years we averaged less than 50 gallons cruising but 400+ gallons for heating.*** The main 671 has a 5 kw cruise gen, so the main gen. is run only to power the hydraulic bow thruster/get home and when the dock power is out.* **We usually have 600 gallons max as the tanks are 32 years old so there is room to transfer fuel if one happens to start leaking.*
*
Besides most boats do not have the capability to cruise the total range they are capable of and/or need the range to a fuel dock.* Even in BC Canada and Alaska there are fuel dock ever couple hundred miles.* So for some of us total range is not as important as total fuel used.* ******
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Old 04-11-2011, 07:21 PM   #28
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RE: Your trawler's range

I can carry 360 gallons. At 2 gph, and 6.5 knots that equates to over 1000 nm.

Waaaay to much fuel in my opinion. 150-200 gallons would be more appropriate.

*

*
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Old 04-11-2011, 09:11 PM   #29
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RE: Your trawler's range

Quote:
jleonard wrote:
I can carry 360 gallons. At 2 gph, and 6.5 knots that equates to over 1000 nm.

Waaaay to much fuel in my opinion. 150-200 gallons would be more appropriate.

*
*So, can you*put only 150-200 gallons in?* It will be cheaper than 300 gallons!

Just kidding a little, Jay.* I know a lot of boaters try to keep their fuel tanks topped off for various reasons, but this thread is long enough already.* But we use the boat every month.* And every month, the tank sumps are drained (takes about 30 seconds).* The tank sumps are also drained 24 hours or so after fueling.* Have never had any water issues, and*no additives are needed.

So what does operating between 30-60% capacity do for us?* When we operate at 45% average capacity compared with operating at*80% average capacity,*we are pushing*over 900 lbs less weight through the water.* This is very near .45 knots difference in speed for this hull, around a 6% improvement.* This means a savings of around $300/year in fuel expenses.* That's worthwhile for us.

But when we go out into open waters, more weight means more comfort, so we fill her up.

*
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Old 04-11-2011, 10:20 PM   #30
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RE: Your trawler's range

I think our Krogen is a passagemaker (about 3000 nm) but I am not. I wish I did not own more diesel than I can burn in a year. On the other hand, I like not having to think about where my next fill up will be. Aren't these boats closer to trollers than trawlers?
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Old 04-12-2011, 11:38 AM   #31
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RE: Your trawler's range

John, You are probably right.
A trawler is a vessel that tows fishing gear (nets) to catch fish , prawns etc My take is a Troller is a trolling boat with lines for catching fish such as salmon etc.
There fore we own motor boats or vessels that are either either coastal cruisers or passagemakers depends where you take it.
In Aus a lot of boats similar to my own are ex trawlers and have been converted to pleasure, my own boat was purpose built to cruise the Aussie coast and the closer countries like Indonesia , PNG etc.
Thats my 2 c worth
Benn
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Old 04-12-2011, 12:05 PM   #32
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RE: Your trawler's range

"Trawler" is a marketing term for a type of recreational vessel, its meaning morphed by whim.

Both Chapman and the USPS*label my*fuel-efficient,*heavy displacement, hull-speed maximum, passenger-facilitated vessel a traweler.* That's good enough for me.
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