A junk in the making? Can I make a 65ft circumnavigate vessel?

http://www.nogva.no/

Deliver profesional marinized engines with gear and proppeler and also produce generator units. I would exspect them to be able to have a good price compared to the qualety if you order a complete system.

 

yes, your are right

I was having a break from computer and grab some beer..... I met with my friend an expat in catapillar, he recommented something above 200 Hp and will have a schedule meetin offically to just recomment the perfect engine and transmission for the job...... problem is friendly in business cost money ....... But I was told only to listern and deciede later...... good beer chap.

He wanna see the study plan of the hull to somewhat understand the need.


WDH

 

explore truck marinizing engine? and alternative gearbox

Thanks only if it is in englandish would I understand the full extend of the content.

I am really looking into truck marinizing setup for the vessel. I have all 7 wooden pinisi wooden cargo doing fine with truck engine.....running on 8 cylinder nissan, can reach 8 knot loaded with cargo but alot od fuel usage, but spare-part is cheap and can be found everywhere.

http://www.boatdesign.net/forums/showthread.php?t=4630&highlight=marinising

The real problem is this vessel will cost me more US$250,000 in material, will i sacrifice that for a dirt cheap engine......

WDH

 

"will i sacrifice that for a dirt cheap engine......"

No sacrifice at all, down in the puny 200hp area almost every "boat" engine is simply a marinized truck , or perhaps tractor engine at birth.

Here in the US the John Deere has a great rep as a heavy duty marine engine .A very simple ploy is to purchase a factory rebuilt , and "marinize" it yourself. With a keel cooler and dry stack there isnt much to do!!

Be sure to avoid anything turboed , as I would assume the 20gph of 200hp uses will be rare indeed, and most times you will plug at 8K sipping fuel.Turbo engines suffer the most from underloading and minor rpm..

While the fuel prices will drop considerably as more supply comes on line , I don't see much under $2.00US happening quickly , so 2 gph lookes loads better than 20gph for a cruise.

Here in the US really fine trannys from landing craft are heavy duty and cheap. They have mounts for two engines and a disconect lever. An engine can be disconected underway , but both must be secured to reingage.

With a variable pitch prop , you might be able to cruise at LRC (long range cruise) with a genset working at 80% , which will enshure its longest life.

And only fire off the big defuler when slo water skiing is in the days program.

Used is better than new , your "NEW' gear will all be USED after the first 30 seconds anyway.

Works for me,

"Who me worry?" MAD Magazine sorry it was "WHAT? Me Worry?'


FAST FRED

 

Did you not see the english flag?

I give you direct link to english version

http://www.nogva.no/English/english.html

NO! avoid anything witch is not turboed.
Turbocharging alow you to have a lighter engine with the same hp so you save weight.
If the engine is matched to the boat the load should be ok.
Are you running CP propeller lower RPM and high pitch will keep the load high so those proplems are eliminated.
Get a preshure gauge in the weelhouse so you can monitor the turbopreshure and at all time keep the realationship betwen rpm and pitch so that you keep the preshure as high as posible compared to disired speed.

 

Welly,

With all the stuff you intend to take along, this boat will weigh 55+ tons. To manage 12 knots at that weight and 59' waterline will take over 350 HP. Achieving a speed length ratio of 1.5 with this boat is not realistic.

To not be stopped by average weather you will need a big propeller with at least 3:1 reduction. 12 knots in flat calm water will require 15.5 USgal / hr or over 50ltr /hr. That is an expensive way to travel unless you are making (Lots of) money.


Tad

 

What then is the recommendation?

The check list stuff is still not in a elimination period, I am taking option and slim down my choice on things vital and things I can forego....... dont think 65 ft have lots of tonnage.........

You know the process of building the vessel and the engine drive system would be 2 main issue in my log book.........if hull is discuss later then the engine have to be quickly decide now. East Kalimantan is full of mining and oil industry, there are enough used engine to find a fit to my boat.

What I need is a suggestion on the spec and transmittion and porpulsion......... The propellar would be at least Singapore made..... to be safe on the calculation.

I wont mind turbo but........... a used convertioned dozer engine will be non turbo...... I have the Branch Manager of INDOTRUCK ( volvo ) east-kalimantan , my cousin, studied machine, to tell me more tonight. too bad, he rabble a lot of tech stuff before telling you the simple answer.

The plates are marine grade Krakatau steel, rough estimation show at least 30 tonnes? I think lesser. Can calculate when the plan and books arrived.

Anyone know of a big modern Yanmar? Deutz have a assembly line in Surabaya......... or Nissan 8-cyclinder is efficient?- can take off from my used truck.

Wellydeckhand

 

The first thing you have to decide is speed and weight. Then you have to decide if your going for fix pitch proppeler or control pitch proppeler.

You should think about vibration and how important that is, this is something you should think about since 2 and 3 blade proppelers are cheaper, but often cause more vibration then 4 blade.

Calculations is something I would not worry about, I would say all manufacturers can pick the right proppeler as long as you can provide the right data.

If your considering to marinize a diesel I would look around the internet to find a company working with marenizing that engine type and see if they are willing to sell you the parts necesary to convert your's.

 

Vibration is an enemy to me......... I'll take the four leaf propeller... I will install all vibration elimination precaution. Anything to get back my sleeping sanity, I am a light sleeper, anything can wake me up in an instant.

Is Chinese made gearbox reliable for long trip....... in this vessel spec? Do Taiwan have manufacturer for the gearbox and stuff, pls advise since your are there. Thanks

 

There are some manufacture off proppeler here, but I'm not familiar with them since we buy moust off our proppeler from europe. They are just as good or bether than amerian made. The service is quick and they are cheaper than american product's with similar qualety.

The price diference to asian made is smal unless you go for the really cheap low qualety stuff.

I can e-mail you a list off all the producers I have listed.

 

Sorry Stian and Welly I do need the info myself, can you have the info on this thread Stian? My latest boat is at wood drying stage..those info about engine , propeller,gearbox, are a subject that I'am very keen to know.

 

Recomended from first hand and second hand exsperience.
http://www.finnoygear.no/
http://www.helseth.no/http:/
http://www.heimdal.com/English/Nyheter.aspx?MenyId=2 (good price)
http://www.nogva.no/ (Cheap) The english version off the page don't include this.http://www.nogva.no/Produkter/Brukt_utstyr/brukt_utstyr.html It's used equitment and the price is in NOK and can be converted into anny currency at http://finance.yahoo.com/currency
http://www.rolls-royce.com/index_flash.jsp (the name tell you the price)
http://www.scana.no/en/svo/products_and_services
http://www.servogear.no/
http://www.wartsila.com/
http://zf-marine.com/ (nice engine matching program on the webpage)

I don't know this ones
http://www.bergpropulsion.se/
http://www.francehelices.fr/
http://www.piening-propeller.de/
http://www.veem.com.au/

Try out this resource if you want to try annything made in Taiwan
http://www.ship.org.tw

 

So..... Ari,

What present engine you use for the junk circumnavigation of your spec? Are you making it with Naga Pelangi?

 

Welly,
I worked out some simple numbers for you, guessing displacement etc, as there is so little info on the boat at this stage. If I'm not wrong, I think 10.5 knots maximum cruising speed is a much better approximation than 12. For those 10.5 kn, you'll require a heavy duty marine engine with a continuous rating of 250 HP, turning at something like 1800 rpm, a 3:1 gear reduction ratio and a 3 blades 41" x 36" propeller, more or less. But you'll have not spare power to run big generators and the like at that speed, so you'll have to go for auxiliaries. If you want to move other items with the main engine, you'll have to add their power to the 250 HP, plus transmissions loses, etc. If you do not go for a heavy duty marine engine then you'd better go up to 300 HP, plus geared items powers.

Please confirm displacement and body draught (without keel), at least, whenever you can, for more precise talking. Knowing Bwl and prismatic coeficient, will also be of help.

Also, I suggest a sail area of around 200 sqm (2153 sqf)

 

Engine still not decided yet.Am looking forward to install something in the range of 200 - 300 horses. Maybe a Misubishi or Nissan /normal aspirated or turbo,Yanmar also will do..7 knots is enough for me..Phinisi Si lolona used 600 horses engine.
Naga pelangi 2 nearly completed. Yet to pay them a visit(9 hours driving.. away from my place)Hopefully by the end of this month.That junk anyway is a world class boat..better than mine in lots of aspect..can't afford to splurge the money like that German guy..since my financing come from my own saving..no other share holder.I had been advice to do the fittings for my Phinisi in Surabaya..know anything about Surabaya? Is it o.k there?