czerwca
03How many gallons of gas would a 50ft catamaran use in 1 hour?
Filed Under (Catamaran) by admin on 03-06-2009
Tagged Under : Catamaran, Knots
How many gallons of gas would a 50ft catamaran use in 1 hour?
roughly on average. in ideal conditions. going 20 mph (40 knots) roughly.
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so many vareubles
single engine I am assuming…
figure about 11 - 14 gal per engine per hour for duals and maybe a little higher for a single…
KILO: read the article and while they are speaking of a 34′ cat it states…
“At a steady 17 knots under varying sea conditions we used 6.5 gallons per hour total for both engines over a two-day period. Another two days of cruising at 14 knots we used 3.8 gals per hour. These are the best ratios of fuel consumption to speed that we have ever heard about or experienced in a boat that size!”
Now granted, we are speaking of a 50′ in the question and if one doubles the fuel consumption shown above for the size difference we are looking at 7.6 gals per hour at 14 knots or 13 gals at 17 knots. While this is not an exact science and was a guesstimate given based on the fuel consumption of my 33′ with no knowledge of the consumption of a cat (that would be less due to the hull design) I will admit that I am truly amazed that the cat only burns 6.5 gals at 17 knots for both engines on the boat in the article.
How can you back your statement that a 50′ cat will burn more alot more than 11-12 gal per hour when the article doesn’t support your claim? Please note that I’m not trying to get into a shouting match here but the figures just aren’t there from what I’m reading and calculating. Thanks.
all depends on weight , sea conditions , winds , on and on and
None if it were under sail.
20mph is 17.3 Knots 40 knots is 46 mph moving anything 50 feet long at 46mph will use a lot more than 11 to 14 gph
For a 50 foot cat at best the weight would be around 30,000lbs I calculate approx 1 gallon per nautical mile above 20 knots. Therefore A speed of 20 knots would use approx 20 gallons per hour.
But slow down just a little to 17-18 knots it will only use 14.4 gallons per hour
Based on twin 200hp diesels
Added Comment : If you doubt my figures read this article
Combined fuel consumption 6.5 gallons per hour
With increased speed you have an increase in the resulting drag
None. Something that size would have diesel engines, and wouldn’t burn gas at all.
With increased speed you have an increase in the resulting drag
“40 knots is 46 mph moving anything 50 feet long at 46mph will use a lot more than 11 to 14 gph ”
20mph is 17.3 Knots “But slow down just a little to 17-18 knots it will only use 14.4 gallons per hour”
This is only .4 gallons higher than Boatin’s Highest estimation for 20 mph but it has a practical weight of 30,000lbs and 50 feet figured in and,more than likely based on calculations using Forude’s Number