Trip to Europe (and back) begins

dLj

.
Mar 23, 2017
3,912
Belliure 41 Back in the Chesapeake
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jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,343
CAL 35 Cruiser #21 moored EVERETT WA
David, this link may give you some information.

I think it Appears to be near La Palma Grab Canary.
 

dLj

.
Mar 23, 2017
3,912
Belliure 41 Back in the Chesapeake
David, this link may give you some information.

I think it Appears to be near La Palma Grab Canary.
Well here I go again, arriving to a port with a world sailing competition! I wonder if I can get involved in this one also?

dj
 
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jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,343
CAL 35 Cruiser #21 moored EVERETT WA
Now you are feeling the long range affects of this Lows in the North Atlantic. I thought they would eventually reach out and share with you, I think ocean waves move faster and are more sustained than wind waves. No science to back up that statement just casual observation. Conjecture on my part it is the pulsing affect of the atmospheric pressure cells on the ocean’s surface. I need to study this possibility.

How are the sails holding up?
 

dLj

.
Mar 23, 2017
3,912
Belliure 41 Back in the Chesapeake
Should be in Palms later this morning. I'll at least fill with fuel but don't know if we'll be able to stay. There seem to be a lot of boats there for various events. I was talking to a friend of mine anchored there, I may anchor next to him if there is still room.

dj
 
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dLj

.
Mar 23, 2017
3,912
Belliure 41 Back in the Chesapeake
Yes indeed! And I averaged 0.5 gallon per hour fuel consumption on this leg running at 2000 rpm. So that's a motoring about 5 knots depending upon sea state, sometimes a bit more, sometimes a bit less. Had a fair bit of motoring due to low winds for a lot of the trip. I check my fuel tanks before filling and was surprised how much fuel I had left as I motored for 82 hours. I burned approximately 44 gallons of diesel. My fuel capacity is 130 gallons so I only burned about 1/3rd of my fuel supply. I'm very pleased with this. I've been dancing around how much fuel I burn and having this extended leg motoring was great to add to my statistics.

dj
 
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jssailem

SBO Weather and Forecasting Forum Jim & John
Oct 22, 2014
22,343
CAL 35 Cruiser #21 moored EVERETT WA
It is great info to have about the boat. Gives the Captain more confidence in making the decisions that need to be made.
 
Apr 5, 2009
3,001
Catalina '88 C30 tr/bs Oak Harbor, WA
Yes indeed! And I averaged 0.5 gallon per hour fuel consumption on this leg running at 2000 rpm. So that's a motoring about 5 knots depending upon sea state, sometimes a bit more, sometimes a bit less. Had a fair bit of motoring due to low winds for a lot of the trip. I check my fuel tanks before filling and was surprised how much fuel I had left as I motored for 82 hours. I burned approximately 44 gallons of diesel. My fuel capacity is 130 gallons so I only burned about 1/3rd of my fuel supply. I'm very pleased with this. I've been dancing around how much fuel I burn and having this extended leg motoring was great to add to my statistics.

dj
Based on a little math, that sounds like you have a range of about 1200nm which is very good. I found this spreadsheet many years ago and while it is not for my boat, the principles should apply to all displacement hulls. It shows the relationship between range and speed. If I remember correctly, it was from a guy who did a full circumnavigation on his C42.
 

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dLj

.
Mar 23, 2017
3,912
Belliure 41 Back in the Chesapeake
Based on a little math, that sounds like you have a range of about 1200nm which is very good. I found this spreadsheet many years ago and while it is not for my boat, the principles should apply to all displacement hulls. It shows the relationship between range and speed. If I remember correctly, it was from a guy who did a full circumnavigation on his C42.
Great graph. Looks like the same one @JamesG161 sent me a while back. Looks like 1800 rpm is the best spot. I just ran at 2000 rpm because it gave me closer/more consistent 5 knots of speed. 1800 puts me down in the mid 4's, a bit slow for my tastes. Interestingly, the first 24 hours I ran at 2200 rpm due to adverse currents. But the remaining hours were done right at 2000.

I had previously calculated I get about 0.75 gallons per hour at 2800 rpm. But after James sent me that chart, I figured I'd see how this boat responded to the lower rpm's. Quite like the results.

dj
 
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JamesG161

SBO Weather and Forecasting Forum Jim & John
Feb 14, 2014
7,727
Hunter 430 Waveland, MS
But after James sent me that chart, I figured I'd see how this boat responded to the lower rpm's. Quite like the results.
:biggrin::biggrin:

I Call it the "Sweet Spot" for your Hull and Diesel Engine perfomance.
_________
Next on my list of understanding is your Boom Furling Mail Sail

Is this a picture you and @jssailem took on your Sea Trials?

YourBoomMain.jpeg


Jim...
 

dLj

.
Mar 23, 2017
3,912
Belliure 41 Back in the Chesapeake
It is great info to have about the boat. Gives the Captain more confidence in making the decisions that need to be made.
Absolutely does. I'll keep running statistics as the more you run, the better the numbers get.

The Arabic astrologers had measured the position of the stars and planets to such a high degree of accuracy, all by visual observation and the use of repeated measurements that modern astrologers could not measure more accurately until some time in the late 1900's like the 1970's or so, through the use of highly accurate telescopes. Quite amazing if you think about it.

dj
 
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