Cruising RPM for Volvo 63P's

[Garryt]

Cruising RPM for Volvo 63P\'s

The max RPM of my 63P engines is around 2850, (about 29 kts with a clean bottom and rope cutters / strippers) what would you experienced guys say would be the optimum revs for cruising:

1. For economic cruising

and

2. Maximum cruising revs for sustained distance cruising (say 80 to 100 miles)

Thanks,

Garry

 

[No1_Moose]

Re: Cruising RPM for Volvo 63P\'s

We cruise between 2000 and 2200rpm, that gives us between 20 and 23kts under normal conditions. Long distance crusing for us is about 1800-1900rpm which is when the exhausts are just under water resulting in submarine style silent running (well on the flybridge anyway).

 

[Deleted User YDKXO]

Re: Cruising RPM for Volvo 63P\'s

Well, if you want maximum economy, then the most efficient engine rpm is at minimum in gear idle speed ie about 5 knots in your case but I guess if you'd have wanted to go at that speed you would have bought a sailing boat
So, I assume what you're really asking is what is the most efficient planing speed for your boat. Normally, this is just beyond hump speed at, say, 14-16 knots in your case. For max cruising speed, Volvo normally say max rpm less 200rpm which obviously in your case is 2650 rpm but be aware that as your hull and sterngear gets dirty, the max rpm will drop so your max cruising rpm should be reduced accordingly
Generally speaking more speed = more fuel. There's no getting around that
The 410/F43 is a nice boat. I had one once with TAMD63P's and I thought the hull/engine combination was particularly good
If you want fuel consumption data on your boat, you could download an old test report from this site

 

[MapisM]

Re: Cruising RPM for Volvo 63P\'s

[ QUOTE ]
For max cruising speed, Volvo normally say max rpm less 200rpm

[/ QUOTE ]
Isn't their general recommendation max rpm less 10%?
Not a big difference actually, more relevant on smaller engines like kad44 etc.

 

[Garryt]

Re: Cruising RPM for Volvo 63P\'s

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Well, if you want maximum economy, then the most efficient engine rpm is at minimum in gear idle speed ie about 5 knots in your case but I guess if you'd have wanted to go at that speed you would have bought a sailing boat
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Absolutely....

Couldn't be more pleased with the boat itself.....I can't imagine another boat of this size with the accommodation space!

I haven't managed to find a review on the F43 only on the earlier version with the similar hull (Statesman 410).

If you know where there is one I'd appreciate it Mike! Not too worried about the fuel at this time, more worried about overdriving the engines!

Come next November however, I may have to put a piece of wood under the accelerator! /forums/images/graemlins/smile.gif

Garry

 

[Deleted User YDKXO]

Re: Cruising RPM for Volvo 63P\'s

Yes you're right, there does'nt seem to be a F43 test report available from this site but the F43 is basically just a 410 with a bigger bathing platform so I would think that any performance figures for the 410 were also valid for the F43. FWIW, I got exactly the same top speed out of my 410 ie 29kts as you
You're right about the 410/F43 accomodation. You won't get more space for the money except maybe in an older Broom. Also I was told by a Sealine guy that they view it as one of their best sea boats and it's been very successful for them as witnessed by the fact that, effectively, it's been on sale since 1993 first as the 390, then 410, then F43 although it does seem to have disappeared from the Sealine new model range recently

 

[Mister_Smee]

Re: Cruising RPM for Volvo 63P\'s

We have a Phantom 38 with 63P's
at 1900 RPM we get about 17kts with good fuel economy.
Do like the odd burst at WOT to blow the cobwebs away (plus the contents of your wallet!!)

 

[Garryt]

Re: Cruising RPM for Volvo 63P\'s

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Also I was told by a Sealine guy that they view it as one of their best sea boats and it's been very successful for them as witnessed by the fact that, effectively, it's been on sale since 1993 first as the 390, then 410, then F43 although it does seem to have disappeared from the Sealine new model range recently
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I spoke to one of the Sealine sales guys at the LBS in January and he confirmed that they have now dropped it from production in favour of their biggest market which is in warmer climes....ie the Med, where they prefer the larger space in the cockpit.

He also said that he felt it would be back in production within two years as it will be missed, but I can't see that to be honest as the cost of re-tooling would be prohibitive!

Luckily SWMBO prefered our boat to the F42/5, so wallet able to stay in pocket! /forums/images/graemlins/blush.gif

 

[Garryt]

Re: Cruising RPM for Volvo 63P\'s

Do like the odd burst at WOT to blow the cobwebs away (plus the contents of your wallet!!)
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Talking about WOT, how often is it advisable, if at all and for how long, should you run your engines at WOT and does it harm them?

 

[Deleted User YDKXO]

Re: Cruising RPM for Volvo 63P\'s

Well I think thats a mistake because the F43 was still selling well AFAIK and just to abandon that sector of the market seems silly when effectively there's little competition but I guess they know what they're doing
Actually, the F43 would'nt make a bad Med boat anyway. OK the cockpit is'nt huge but it's well shaded and the flybridge has a reasonable sunpad and I'm starting to think that an aft cabin is'nt a bad idea in the Med anyway because you tend to anchor overnight a lot more and the noise of the waves slapping against the bow and the anchor chain grating makes sleeping in the forward cabin more difficult, at least for me

 

[MapisM]

Re: Cruising RPM for Volvo 63P\'s

I fully agree, the F43 wasn't a bad med boat at all.
Imho, Sealine did a much better job in building rather than marketing/selling it.
The larger cabin space and the much better privacy with guests onboard were a big plus.

For the anchor chain, I always release its tension with a line when overnighting.
There's some manual work involved, but it's worth both for the noise and for the winch.
Never noticed the waves noise against the bow, but I guess that's due to two inches of wooden hull!

 

[PowerYachtBlog]

Re: Cruising RPM for Volvo 63P\'s

[ QUOTE ]
Well I think thats a mistake because the F43 was still selling well AFAIK and just to abandon that sector of the market seems silly when effectively there's little competition but I guess they know what they're doing
Actually, the F43 would'nt make a bad Med boat anyway. OK the cockpit is'nt huge but it's well shaded and the flybridge has a reasonable sunpad and I'm starting to think that an aft cabin is'nt a bad idea in the Med anyway because you tend to anchor overnight a lot more and the noise of the waves slapping against the bow and the anchor chain grating makes sleeping in the forward cabin more difficult, at least for me

[/ QUOTE ]

after the post a week ago and this one I think Mr.Mike is being intrigued by a Ferretti 690 Altura /forums/images/graemlins/cool.gif

I agree that F43 is one if not best of Sealine seaboat's
as for the aftcabin
it is also worth noting that many open boats built in italy do have always the third cabin or guest cabin situated aft

- the old Pershing used to have it (45, 48 and 54)
- Itama
- Alfamarine
- Rizzardi
- Sarnico

while some people can argue wheter to like it or not, what I particular like with the aft cabin is that when you have guests you can put them there and they are a bit in there own privacy and also you have your own

 

[Garryt]

Re: Cruising RPM for Volvo 63P\'s

because you tend to anchor overnight a lot more and the noise of the waves slapping against the bow and the anchor chain grating makes sleeping in the forward cabin more difficult, at least for me
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You've really hit the nail on the head with that one. Our previous boat had fwd cabin and I said i would never get another one! Aft cabin or mid cabin only for us! /forums/images/graemlins/smile.gif

 

[Deleted User YDKXO]

Re: Cruising RPM for Volvo 63P\'s

For this season I have bought 2 ropes with rubber snubbers to relieve the anchor chain load and I hope that gets rid of the anchor chain noise but that still leaves the slap slap noise of the waves and SWMBO's snoring /forums/images/graemlins/smile.gif

 

[Deleted User YDKXO]

Re: Cruising RPM for Volvo 63P\'s

How come you've changed your name, nettuno?

Yes, I'm very intrigued by the Ferretti 690 Altura but my wallet won't stretch that far!

I've noticed that quite a few Italian sports boats have aft cabins too, particularly the Pershings and Sunseeker did it with the Camargue 46 and Travado 40 but they have stopped producing boats with this layout now. Shame

 

[PowerYachtBlog]

Re: Cruising RPM for Volvo 63P\'s

yeah 690 Altura is a nice boat I think if one is into her there is not much competition, who knows may be a good deal can pop out of the second hand market....

yeah remember the Camargue 46 (a very good boat) but also the Travado 40

yeah changed to my surname but if you mind it I change it again
Nettuno is the God of the Oceans, it is also a nice harbour Marina in Italy Central South just doward to Rome

 

[MapisM]

Re: Cruising RPM for Volvo 63P\'s

ROTFL re.swmbo, but I guess moving to aft cabin wouldn't solve the problem!?
For anchor chain, you'll realize it's easier done than discussed, and very effective.
I never used snubbers btw, just the two ropes. The chain weight is sufficient to absorb some boat movement.
...if the weather gets bad enough to create problems to the ropes, you'd be in trouble regardless of snubbers!

 

[Mister_Smee]

Re: Cruising RPM for Volvo 63P\'s

[ QUOTE ]

I never used rubbers btw,

[/ QUOTE ]
Nor me since the op!!!!
/forums/images/graemlins/laugh.gif

 

[MapisM]

Re: Cruising RPM for Volvo 63P\'s

Nice thing this 'edit' feature... /forums/images/graemlins/grin.gif

 

[Deleted User YDKXO]

Re: Cruising RPM for Volvo 63P\'s

It would solve the problem because I'd move to the aft cabin and she would stay at the front /forums/images/graemlins/smile.gif