52C best economy for long trip?

[Blowncar]

Looking at taking my 52C on a 750 nm trip. Boat has 735hp 8v92's. Curious what the best balance of speed and economy others have experienced. During my only longer trip (200 nm) @ 8.5 knots my flow scans weren't reliable, but my guess is 1/1. Does that sound right? Ideas of fuel use at 9-9.5 knots? thanks

 

[madhatter1]

Figure .4 to be safe for range at 80%. Then factor in some savings for hull speed. Seems that many times I am expecting lower fuel fill up due to slow speed time I am disappointed. Don't care much about cost but not quite what you would guess. Cost is cost. Whatever. Range is what you need to be estimated accurately.

 

[madhatter1]

Also why was I not invited on this expedition??

 

[Blowncar]

Also why was I not invited on this expedition??

Reading comprehension comes to mind,

 

[Pascal]

Big difference between 9 and 9.5 kts. 9 kts is pretty much speed on your boat and you ll likely burn burn about 9 to 10 GPH. At 9.5 kts you ll be just above hull speed and starting to push a wave, probably burning close to 13/14 gph

 

[Freeebird]

Either run it at hull speed or put it on plane. Anything in between will just burn a lot of fuel and accomplish very little. If you’re trying to shorten your run time, alternate between the two. 1/1 sounds right at 9 knots.

 

[GCSI]

On my previous 52C (Cats), typically saw a bit more than 1nm/gallon at 9kts. Would do a little better at slower speeds, but 9 seemed the sweet spot.

Talking to other 52 owners with Detroits, everyone reported similar experience

 

[Freeebird]

This will give you an idea of how much more fuel you burn when you go above hull speed. From the brochure archives here for a 53ED.

 

[Blowncar]

Thanks everyone sounds like i can bump it up to 9 from 8.5. An extra .5 will shorten the trip 5-7 hours.