Gallons per hour

quote:
Originally posted by mixman

I have the opposite approach. We spend somewhere between $3,500 and $5,000 each year when we take 4 weeks off and trailer the boat to FL. 4 trips to the Abacos, 2 to the Keys. Most people spend that kind of money (or more) for one week of vacation. Heck, we just did a week on the Chesapeake and it was very affordable. I burned 61 gallons of fuel over the course of 10 hours (Baltimore to Solomons & back with other stops) at $4.20/gallon is $256. Dockage was around $350. So 8 days of vacation for $600 plus food.

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Dockage for us at Montauk Yacht Club for ONE night over the fourth of July would have been almost $350.00...
 
Those prices in your area are insane. The only places I've seen even close to that were still closer to $3/ft. Bahia Mar in Ft. Lauderdale, Galleon in Key West, and Old Bahama Bay. Most other places I've been are in the $1.50-$2.50/ft range.
 
Kurt, $5 to $7 a ft is pretty common once you hit eastern Long Island sound and head towards RI, taxachussets, etc..
 
I think I'll keep my boating south of the Mason-Dixon line!
 
I'll check on HOGAN's theory wish my wife's car.
It has a Computer for MPG, so I can fill up, set the PC to Zero, go for an hour on the Freeway and refill.
 
quote:
Originally posted by mixman

I have the opposite approach. We spend somewhere between $3,500 and $5,000 each year when we take 4 weeks off and trailer the boat to FL. 4 trips to the Abacos, 2 to the Keys. Most people spend that kind of money (or more) for one week of vacation. Heck, we just did a week on the Chesapeake and it was very affordable. I burned 61 gallons of fuel over the course of 10 hours (Baltimore to Solomons & back with other stops) at $4.20/gallon is $256. Dockage was around $350. So 8 days of vacation for $600 plus food.

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With out a doubt I spent more on my one week vacation I'm guessing closer to 6K. Spending a week with my whole family was well worth the price!
 
24 GPH at a best range cruise speed of 32 MPH for 1.33 MPG in a Larson Cabrio 330.

Mike
 
Hogan we have the same boat. I did the math for the first time on the last two trips. One to Belmar and on to the channel club. I was stunned to find out that I burned about 20 gallons an hour.
 
"Not on these. Honda 60s red-line at 6,000. 60hp is achieved at 5,500rpm. We push 19 knots at that rpm so I back them down to 5,000 for cruise to save a couple gallons per hour and baby them a bit. My dealer thinks I am too soft on them :-)"

Last time I checked 4950 and 6000 isnt that far off. Thats more then 3/4 throttle, again not by much though. And at 5500 you only cruise at 19knots? Are you sure two hulls are better then one??
 
What are you burning at 5500 vs what you like to cruise at 4950? How fast do you cruise at 4950?
 
quote:
Originally posted by BoatCrazy

Last time I checked 4950 and 6000 isnt that far off. Thats more then 3/4 throttle, again not by much though. And at 5500 you only cruise at 19knots? Are you sure two hulls are better then one??
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For my needs, yes, I'm sure. This is a 30' x 10' power cat with twin Honda 60s. That's a total of 120 HP pushing the boat along at around 18 knots. What's the issue with that?
 
quote:
Originally posted by Audrey II

What are you burning at 5500 vs what you like to cruise at 4950? How fast do you cruise at 4950?

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4950-5000 pushes the boat around 17-17.5 knots burning around 8gph total (4 each engine) in real-time. 55OO is more like 19 knots and 11gph.
 
I see everyone stating what they burn over time, hrs vs. amount of fuel. Isn't it better to know what you burn at all speeds? for ex. I burn 28gl p/hr. at 30 mph, that is my sweet spot at cruise and just over 1mpg. But if I want to go hull speed I can as much as 5 mph burning 1gph at 6mph. If you go on long trips at higher speeds you are obviously burning more fuel per hr. than those just heading to an anchorage for a couple of hrs. and returning home. I believe that some of the #'s are not true indications of what you really burn p/hr.

I could be wrong though!
 
You're right, Van, there are two different figures being discussed here. Fuel burn at "sea-speed" would indeed be more important for finding one's sweet spot. But one needs either fuel meters or NMEA 2000 information to get that number.
 
Bingo I don't have any type of fuel monitoring system so the only data I have is GPH and MPG which is really what is important to me I put many hours on the boat most of which are at cruising speed and the most I have ever burned is 21 gph and this is with running my generator and running WOT from time to time to blow everything out. This said I believe my burn at cruise is more like 26 based on caterpillars info of 13 gph at my cruising rpm. Granted I could run slower and burn less or faster and burn more however the boat seems to like cruising at about 2400 rpms I'm not in a rush so I go as fast as it takes me anywhere from 19-23 knots with an average of about 21.
 
All I posted was what my average burn was since I last filled up before vacation. Since then, there has been a combination of running at cruising speed, running at idle speed and running in between. My figures include the use of the genny, which burns about 1 gph.
 
0 gph so far this year. The repar bill from a blown shaft seal and subsequent damage and upgrades is gonna hurt......A LOT!
 
"4950-5000 pushes the boat around 17-17.5 knots burning around 8gph total (4 each engine) in real-time. 55OO is more like 19 knots and 11gph.

--Kurt

20mph cruise at 5-7gph."

So what am I missing?

Im not familiar with your boat, so you pretty much have a cat hull trawler?
 
I wouldn't use the word "trawler" for something that cruises well over displacement speeds. I suppose I would classify it as a "trailerable" cruising power catamaran with off-shore capabilities, good fuel economy, reasonable cruise speed, and comfortable accommodations.

http://www.motorcat.com/models/1/mc30.html
 
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