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03-21-2015, 08:41 PM
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#1
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Senior Member
City: Norfolk, VA
Vessel Name: Slow Bells
Vessel Model: Marine Trader 38
Join Date: Nov 2013
Posts: 311
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hey, "sip" this...
I was doing some research on the Great Loop this evening, and happened to come across an article with this sentence:
"Under the water is a slippery hull that a single, fuel-sipping 425-hp Cummins diesel drives to a comfortable 16-knot cruising speed (and 20.4 knots flat out)."
I think it is the first time I have seen the phrases "425 hp", "16-knot", and "fuel sipping" all used in the same sentence.
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03-22-2015, 01:23 AM
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#2
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Guru
City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
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Quote:
Originally Posted by seattleboatguy
I was doing some research on the Great Loop this evening, and happened to come across an article with this sentence:
"Under the water is a slippery hull that a single, fuel-sipping 425-hp Cummins diesel drives to a comfortable 16-knot cruising speed (and 20.4 knots flat out)."
I think it is the first time I have seen the phrases "425 hp", "16-knot", and "fuel sipping" all used in the same sentence.
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Well, what's the sipage number?
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03-22-2015, 03:28 AM
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#3
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Senior Member
City: Northern Chesapeake
Vessel Model: Carver 440, 6CTA8.3's
Join Date: Oct 2007
Posts: 405
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16k, 15.8 gph
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03-22-2015, 08:44 AM
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#4
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Guru
City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
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Quote:
Originally Posted by bluebyu
16k, 15.8 gph
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More like borderline chugging to me. Now half that number would be sipping. 
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03-22-2015, 09:36 AM
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#5
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Guru
City: Windsor
Vessel Name: Keeper IV
Vessel Model: 44 Viking ACMY
Join Date: Nov 2013
Posts: 1,313
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My DD 6-71 450HP will drink 16GPH at 19Knts. So me thinks this Cummins is a bit of a gulper.
Sent from my Nexus 4 using Trawler
__________________
"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."
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03-22-2015, 09:44 AM
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#6
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Guru
City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,607
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Reminds me of a buddy that insisted that his 61 viking with twin 2400HP Mtu's wasn't that un fuel efficient. He said at the speed he likes he only burns 100GPH per side. I prefer my modest 5GPH
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Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
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03-22-2015, 11:47 AM
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#7
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Guru
City: Fort Myers, FL... Summers in Crisfield, MD
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 9,974
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If you have more than a 3/8" fuel line, you ain't sippin.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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03-22-2015, 12:30 PM
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#8
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Guru
City: St. Petersburg, Florida
Vessel Name: M/V Sherpa
Vessel Model: 24' Vashon Diesel Cruiser
Join Date: Jun 2013
Posts: 585
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I guess it is all relative; but when I hear about "sipping fuel", < 2-3 gph comes to mind. Amazing people can afford to operate boats with large diesel guzzling engines.
I love my 1/2 gph burn rate and 200+ nm range on slightly less than 20 gallons. I can spend more going to the movies with my family than a day trip on my boat. I've learned to enjoy the trip more than the destination.
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“Go small, go simple, go now”
― Larry Pardey, Cruising in Seraffyn
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03-22-2015, 01:32 PM
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#9
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Guru
City: Little River SC
Vessel Name: JAZ
Vessel Model: Ta Chaio/CT35
Join Date: Jan 2011
Posts: 716
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There's a huge difference between a baby's sip and an elephant's sip! I prefer the baby sip.
__________________
Tracy & Susie Hellman 1985 Ta Chiao CT 35
Twin Lehman Super 90's Cummins Onan 5kw
Lightkeepers Marina -Little River, SC
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03-22-2015, 02:21 PM
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#10
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Guru
City: Fort Lauderdale
Join Date: Jan 2014
Posts: 19,616
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It's all a matter of perspective. To us, that is definitely sipping. We're use to two to three times that fuel usage at that speed.
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03-22-2015, 02:45 PM
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#11
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Guru
City: Punta Gorda, fl
Vessel Name: Escapade
Vessel Model: Nordic Tug 37 2002
Join Date: Jan 2015
Posts: 1,211
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Quote:
Originally Posted by O C Diver
If you have more than a 3/8" fuel line, you ain't sippin.
Ted
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Now that says it all! I never thought of that quick and easy reference, the fuel line!
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03-22-2015, 03:49 PM
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#12
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TF Site Team
City: California Delta
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 13,130
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As I approached retirement, I was cruising along at altitude in the Learjet 60 doing 480 knots. I commented to my copilot that we're now cruising at 8 miles per minute and soon I'll be enjoying 8 miles per hour. He asked, "Well, is that boat 60 times more efficient?"
"Good question!!" So I pulled out my calculator and ran the numbers. They came out something like this...
Learjet 60: 200 GPH @ 480 Kts=2.4 NM/Gal
Californian 34 LRC: 3.1 GPH at 7.5 Kts = 2.4 NM/Gal
It was hard to believe that the largest Learjet had the same fuel efficiency as my slow trawler! I explained that I also get to enjoy my boat 24 hrs a day, even if the engines are not running. In the Learjet, we never enjoyed our time aboard when the engines were not running!!
So I guess it's all relative, but sometimes the time saved or the weather avoided by a fast run is worth every extra penny spent on the fuel. It's nice to have options, something my current boat does not afford me.
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03-22-2015, 05:22 PM
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#13
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Moderator Emeritus
City: Home Port: Buck's Harbor, Maine
Vessel Name: "Emily Anne"
Vessel Model: 2001 Island Gypsy 32 Europa (Hull #146)
Join Date: Sep 2008
Posts: 2,837
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Quote:
Originally Posted by FlyWright
Learjet 60: 200 GPH @ 480 Kts=2.4 NM/Gal
Californian 34 LRC: 3.1 GPH at 7.5 Kts = 2.4 NM/Gal
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Now how about comparisons on purchase price, nav equipment, maintenance costs and the like?
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David Hawkins
Deer Isle, Maine
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03-22-2015, 05:27 PM
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#14
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Guru
City: Satsuma FL/Daytona Beach Shores
Vessel Name: No Mo Trawla
Vessel Model: Hurricane SS188
Join Date: Jul 2014
Posts: 2,306
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Quote:
Originally Posted by dwhatty
Now how about comparisons on purchase price, nav equipment, maintenance costs and the like?
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Not to mention the cost of jet fuel versus diesel. Oddly, it is less for jet fuel vice low sulfur diesel.
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03-22-2015, 07:33 PM
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#15
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Guru
City: Seattle
Join Date: Apr 2012
Posts: 1,142
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Fly-what kind of anchor do you put on a Lear?
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03-22-2015, 08:33 PM
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#16
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Guru
City: Juno Beach, FL
Vessel Name: Takes Two
Vessel Model: Defever 49 RPH
Join Date: Jul 2011
Posts: 500
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hey, "sip" this...
Quote:
Originally Posted by THD
Fly-what kind of anchor do you put on a Lear?
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Wheel chocks
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03-22-2015, 09:43 PM
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#17
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TF Site Team
City: California Delta
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 13,130
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Quote:
Originally Posted by gwkiwi
Wheel chocks
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That's it....or a hangar! In nice weather, we'd chock it. If in doubt, it got hangared. Never once remember tying it down like lighter aircraft. Come to think of it, I don't think it's got tiedown rings.
Some places would provide a hanger for $50-75 for the night. Other places would gouge us for up to $500 for a heated hangar in the winter! Ouch...I hated paying that!!
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03-23-2015, 08:33 AM
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#18
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Guru
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 9,045
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Quote:
Originally Posted by seattleboatguy
I was doing some research on the Great Loop this evening, and happened to come across an article with this sentence:
"Under the water is a slippery hull that a single, fuel-sipping 425-hp Cummins diesel drives to a comfortable 16-knot cruising speed (and 20.4 knots flat out)."
I think it is the first time I have seen the phrases "425 hp", "16-knot", and "fuel sipping" all used in the same sentence.
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For most if not all of us North and South American MV owners the annual volume of fuel burned represents a small % of boat ownership costs. Let us cheer on the 15 or more GPH users knowing they are the ones keeping the marinas, boat repair places, builder's yards and marine development business going. Those of us burning less than 5 GPH cannot sustain the marine industry as we know it.
Sure, sipping fuel is good for bragging rights, but only for a very small group of us. Today's engines and hull designs allow one to sip fuel on a SD 45 - 55 footer or blast it out to a comfortable 16 knot cruise. Sounds good to me, Tony Fleming, Nordhavn, Doug Zurn, Tad Roberts, Sam Devlin and a large group of other MV builders and NAs.
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03-23-2015, 09:52 AM
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#19
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Guru
City: San Diego
Join Date: Oct 2007
Posts: 6,561
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Quote:
Originally Posted by sunchaser
For most if not all of us North and South American MV owners the annual volume of fuel burned represents a small % of boat ownership costs........Today's engines and hull designs allow one to sip fuel on a SD 45 - 55 footer or blast it out to a comfortable 16 knot cruise.
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   (I'm getting tired of defending my Yanmar 440s.  )
__________________
Done with diesel power boats! Investigating all electric!
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03-23-2015, 10:21 AM
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#20
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TF Site Team
City: League City, Tx
Vessel Name: Floatsome & Jetsome
Vessel Model: Meridian 411
Join Date: Oct 2007
Posts: 7,014
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Quote:
Originally Posted by N4712
Reminds me of a buddy that insisted that his 61 viking with twin 2400HP Mtu's wasn't that un fuel efficient. He said at the speed he likes he only burns 100GPH per side. I prefer my modest 5GPH
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I was going to use the same reference. A buddy had a 68 foot viking with the same engines. 180gph at about 38kts.
It's all relative!!!!
__________________
__________________
Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B...Sold
Meridian 411...T-Cummins 450C
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