Sea line 29 sc

[george unthank]

From Ireland.
I'm looking for an up grade from a 20' with small cuddy to something about 25-30 '- Must do 28 mph . Must have bow thruster . One double bed + convertable bow cabin for guests
Must be able to stand up in main sleeping cabin ;
Must have shower/Wc near main berth .No ''sleeping in cave''
the SeaLine 29 SC seems ideal for my purposes.One I'm looking at is 2007
Perfect condition etc. He's looking for € 99,000 for it .
Is it worth that money
Any advise on where I could look for another craft that has above specs.
Any one have experience of these craft.
What would it do /gal @ 10 knots
Is she easy to manouver at 10 knots
at its most efficient how many gallons/hr? and what speed would that be ?

The craft I have does about 11 Litres / hr @ 23 knots/hr
I dont expect a 29/30' craft would do anything like that but how affordable are they to run . I would do about 100 hrs /
The craft I have I am disposing of it. Either its a Mon - morning boat or its just unlucky. every yr Ive had it I ve had some major problem. . Some of these were my own responsibility- but the coupler just blowing out .or spline just giving up, or turbo packing in - these are all design faults in a boat which is only 7 years old
I now learn that the 2 companies which allied their resources to manufacture this craft have parted company ; the marriage was not a blessed one . In fact I hear nothing but complaints about it's engine ; a mercruiser 1.7 D diesel dti
Any advice or comments on these reservations would be appreciated

 

[Quest]

Would a Jeanneau Prestige 30 do a similar job for you? Take a look. Generally the Jeanneaus are a little cheaper to buy than Sealines too.

 

[zkirkor]

Galeon

Have a look at Polish Galeon. They have a dealer in Ireland.

 

[martynwhiteley]

Finding a 30ft boat with a standing sleeping cabin that will do 28mph is the main problem. A Bavaria may come close.

 

[sea-commander]

Hello George,

I think 10 knots should be the most uneconomical speed, because it's faster than the hull speed, but slower than planning speed and the boat is "climbing" the boat wave.
A slow economical speed should be +/- 7-8 knots.
I don't know the figures for planning speed.

What about a Fairline Targa 28/29?

Cheers
Chris

 

[george unthank]

Thanks Chris,
I plead ignorance on hull speed and planning speed . I seem to recall that the max speed of displacement hull is related to the length of the hull & square root or is it ? squared ?
I'll look it up on wikepedia.
I presume ''climbing the wave '' is the speed you are at just before the boat planes .
Would you have any inkling as to what mpg a 200 hp engine would do at 7-8 knots?
The primary criteria if I pear it down would be ;
1x double bed cabin innwhich you can stand up
a shower that you can do likewise .
craft to do 30 knots/hr

I'll have a look at Targa you sugessted

 

[george unthank]

Martyn

what you you expect to pay for a > 28' Bavaria circa 2007 ?
Any Ideas ?
I paid €32 K for a 19 ft boat 140 hp. diesel which has given endless trouble.
July - most people hang on to their crafts if they have not sold/ changed by late JUne
So I will expect to pay less buying and lose proportionately selling mine
What do you think?

 

[sea-commander]

You're right regarding hull speed and D-speed / P-speed.

Hull speed (knots) = 2,43 x √ length waterline

I have no real life figures, but a boat like the sc 29 or compareable should be around 1,0 - 1,5 l/nm @7-8 kts, I think.
I am sure, someone from the forum might know exact figures.

Some months ago there was a used boat test of the Targa 28 / 29 on MBM. The conclusion was very positive.

I think the Bavaria 28 started in 2010.

Chris

 

[george unthank]

TURBO pROBLEMS

I put in new turbo last yr. Did about 50 hrs
THIs year on first trip it started ok. Then started to slow down such that it was taking up to 4 mins to click in
I was adviised about running too slow for too long , built up of soot etc, I avoid this by giving the engine full throttle for 5 mins before berthing , then allowing it 10 mins + to cool down

Any one know why this is happening
Ive read about the jamming of the waste gate - is tere any way of erradicating this prob ? Someone mentioned a fluid or oil to apply to waste gate ( where ever that is )
Ive been advised that I should spray WD 40 into turbo unit somewhere ??
Ive been advised about adding some fluid to diesel to reduce soot ??


Any one have any ideas on these infuriating turbo prob;ems
Please help !
George

 

[Hurricane]

You're right regarding hull speed and D-speed / P-speed.

Hull speed (knots) = 2,43 x √ length waterline

I have no real life figures, but a boat like the sc 29 or compareable should be around 1,0 - 1,5 l/nm @7-8 kts, I think.
I am sure, someone from the forum might know exact figures.

Some months ago there was a used boat test of the Targa 28 / 29 on MBM. The conclusion was very positive.

I think the Bavaria 28 started in 2010.

Chris

I think you will find that its 1.43 (not 2.43) times the sq root of the waterline length.
Water line length in feet and the speed will be in knots.

 

[sea-commander]

In "my" formula the water line length is in meter.
That's what I'm used to - sorry for the confusion.

Chris

 

[John100156]

Have you got your digits jumbled-up, I thought it was 1.34 x SQRT waterline length, so for my F43 with 33.1ft WL Pootling speed is 7.71 knots say 8?

 

[sea-commander]

Yup,
1,34 if LWL calculated in ft,
2,43 if LWL calculated in m