Interestingly everyone said i should expect a litre per mile from my Optimax (150), which after owning the Yammie v4 i was quite excited about (sorry pete
)... but i am experincing far better than that. Average on a long distance cruise (allowing for some 40knts+ sections) seams to be 1.5nm per litre.
Even given this weekends extreme weather, lots of throttle working and full chat up southampton water my average has come out as 1.4nm per litre.
We've put 30 hours on the engine now and total fuel consumption is about 400litres, thats 13li /hr.
Now no smart comments from smelly diesel owners please.
A little irrelivent i know, but possibly helpful in your quest. You could make a far worse decision than an optimax. (edit: there isn't one on your list! Even more irrelivent then i guess, so i'll try and add some useful comments below)
I beleive the 115 4-stroke is the best of the bunch here. Reasons: lower running costs, higher resale value and desirability, quiter, smoother running.
You need to find out if the Yammie 150VMax is a HPDI engine or not. It'll go well regardless, but unless you have shares in an Oil company steer clear unless it IS an HPDI engine.
The 2-stroke (i assume conventional technology) 115 will also drink fuel at an alarming rate, so this boat would need to be several thousand beer tokens less than the 4-stroke to attract you, or a future customer me thinks.
