Princess v39 with Yamaha outboards

marcochi76 said:
it looks like all interior wood furniture had been repainted. terrible.
based on my experience with the D6 330, those 2x250hp Yamaha are more than underpowered.
I do not understand what are those black boxes in place of the volvo engines.
only one tank used for both engines, they are not going much far away
it is usual to see long taxi boats with 2-3 outdrives in those areas, so I understand where the idea might comes from
but my eyes are bleeding looking at that V39
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Definitely looks like there's a back story to the boat.
 
petem said:
The engines seem to be mounted a lot further back than I would have expected.

Also, is that dark interior woodwork OEM?
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Hard to be certain, but that looks like OEM matt walnut but taken with a rubbish camera to me.

Don't think that carpet is from the original Princess colour swatches however! :D
 
Rappey said:
Fairly easy job if someone wanted to swap them out for a pair of 600hp outboards ?
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Twin 600hp is overkill and will make it overpowered, considering that even Princess offer as biggest engine the D6 380. But Mercury Verado 350 or 400hp should do the trick.

The original D6 330hp is just over 800 nm of torque. Verado with 5.7l V10 block should be close.
 
PowerYachtBlog said:
Twin 600hp is overkill and will make it overpowered, considering that even Princess offer as biggest engine the D6 380. But Mercury Verado 350 or 400hp should do the trick.

The original D6 330hp is just over 800 nm of torque. Verado with 5.7l V10 block should be close.
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Verado will be ballpark 1/3rd of the torque of D6, which is perfectly fine because it is ballpark 3x the rpm of D6. Power moves the boat fast, not torque :)
 
jfm said:
Verado will be ballpark 1/3rd of the torque of D6, which is perfectly fine because it is ballpark 3x the rpm of D6. Power moves the boat fast, not torque :)
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The torque curve of the Verado would be interesting to see.

A VP D6 (and many other diesels) are designed to have increasing torque with lower RPM, which suits a heavier boat - it makes it easier to maintain a stable cruise speed, plus you need enough torque at the right hull speed to effortlessly transition to a planing state.

If it looks similar but needs 3x the RPM to achieve that, then fine.
But I'd still be interested to see the fuel burn figures 🤣

VP D6-370:
Screenshot 2025-02-10 153718.png
 
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Like with like a Pardo 38 which is available with stern drive Volvo D4 300hp and or twin Mercury 350hp was 1 litre per nautical more. 1.5 per nautical more if you opt for the 400s.

So with Verados 400hp you should be 1 liter per nautical mile more or less.
 
It's kinda clever on one hand but for me it's a very hard boat to value since it was never intended to be outboard powered (and there are a few obvious clues that it was never intended that way.)
I know it's much much cheaper than a similar age diesel version but to me it's going to have a very limited market. If you buy it you're really really going to want to keep it, in my opinion..
 
I asked ChatGPT to summarise the forum wisdom on this boat. These are the results:-

✅ No complicated outdrives that will melt in contact with the water
✅ No ladder to the flybridge (admittedly there is no flybridge)
❌ Tent on the back
❌ Petrol powered so impossible to find fuel in any marina anywhere and will explode
❌ Has blue underwater lights (probably)
 
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