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Old 02-11-2016, 09:16 PM   #21
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 5,346

Yes, installed Hp is much more. What engines in your vessel? Know of several 48s and 49s whose numbers are pretty close to those I mentioned when doing longer journeys with economy paramount. But as usual I'm sure I'm wrong.

I keep close track of nmpg and over the past 10 years have averaged right at 1.4 nmpg including genset and diesel heat. This number drops quickly on short runs where I'll run say 8.2 - 8.5 knots. 7.8 seems the economy sweet spot.

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Old 02-12-2016, 08:20 PM   #22
Join Date: Nov 2015
Posts: 3
We also own a a 49rph, a '79, twin leman 120's.
With that hull 120's are plenty and the high bow is comfortable to have. We will often on calm days here on the Chesapeake shut one down and freewheel the prop (don't mean to start up that conversation) and with @200rpm more on the running engine do the same speed ( 1750-1800 = @ 7-7.5 kts)
The high bow does come in handy for those storms coming from the NE and we have to get somewhere.
We weigh 54,000 lbs and draw 4.5 ft.
Love the boat.

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Old 02-13-2016, 12:42 AM   #23
Daddyo's Avatar

City: Cruising East Coast US
Country: USA
Vessel Name: Grace
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 2,392
My 48 has the twin Lehmans. As to running one and free wheeling, it's costing you fuel. At 1400rpm we were burning 1.9gph total. At 1500rpm it's about 2.5gph. That's a huge difference on our hull which is a bit different than the 49. The 48 is much more of a displacement hull vs the 49. A lot less windage on the 48 so that probably contributes to the numbers.
Mark Bowerman
Brokerage owner and cruiser
Esse Quam Videri
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Old 02-13-2016, 04:10 AM   #24
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City: Brisbane
Country: Australia
Vessel Name: Lotus
Vessel Model: Clipper (CHB) 34 Sedan/Europa style
Join Date: Jun 2008
Posts: 5,673
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Originally Posted by healhustler View Post
That 49' has always been my favorite look. Very masculine vessel. I'd be satisfied with that huge pilothouse and Portuguese Bridge, even if I had to graft it to Manatee. Ya think it would work?
Sorry Larry...but no...

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