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

Have you a budget for this project? I mean, cost of the boat and cost of circumnavigation with this boat. Don't take me wrong, but It looks to mee that you have to be a very rich man to do that in a boat like this.

 

Maybe................

I have a constant business that can deal with fuel and sailing need for a year. Remember the sail part of the ship? Gonna use it even it is slower than machine...... take n give 8 knots. First try varous inter island trip to charter to payoff part of the cost and try it myself, the owner can always tag along. Later, one year oversea cost. Is US$ 100,000 for year enough?

The building part, shipyard no rent, sponsor on welding rod (Indoweld) and safety and welding equipment( TUFF). Cheap professional cert. welder and carpenter working for 35,000- 75,000 rupiah a day equal US$ 3.50- 7.50 a day......., I produce the welding gas in my facilities, special gas from (airliquide)...... Machine and hydraulic equipment was given(dad), only major thing I need to buy is the marine steel plates of various thickness, aluminium, stainless steel plates, winch, angker, gearbox( TwinDisc), Propellar (European?) , Super quick bilge pump and a nice shinny stainless bell with the name of the ship ( best money can buy).

Of course there is other stuff like bed, I have 6 new bed doing nothing and can get pretty discount on Kingkoil bed, sofa custome ordered tailor made with the foam calculation stack of different density from furniture maker Olympic ( Leather skin wrap or top of the line synthetic leather for water proof). The wood here are excellent once dry naturally in shade and mold to desire. Pillow will be dunlope, with cotton bed spray. Utensile already been bought (Zebra Thailand) with the stainless steel fridge. The kitchen look will be fabricate in Tanggerang,Jakarta.

The electronic panel and satellite GPS, radar,sonar, night vision monintor and other stuff will be order in HongKong.

The mast and sail. I have no idea as the asking for the specification have just began........ no sail knowledge....... I like engine driven boat but would like sailing.( Will bring good sailors with me...... the two friendly gorilla).

Errr........... what else you need to know............ I am just 35 year old might leave out something..... yes?

It will take me 3 years to build this monster........... maybe turn bigger in size......... extent hull? Double engine? Whatever to get a better rating as a motorsailer. XX/XX . Still cross checking for circumnavigate redunancy measurement also.

Took me 4 month to decide to even discuss this boat building of a circumnavigate....... the type non-racing but for pure pleasure.




Wellydeckhand

 

See great craftmanship of Uli . His teak boat is perfect, wonder they have something for you Welly........

 

Well Welly I don't have a clue if $100 000 is enough or not. But if you can make it I'll be happy for you, and a little bit envious.

What I was trying to say is that if I were in your position I would begin by carefully calculating the costs with different kinds of boats, including smaller ones. I would see if the money I could make with those “inter island trips to charter to payoff part of the cost” meant anything regarding the initial and operating costs in an extensive world cruise in a bigger boat.

Big boats are always big money, they cost more, they need bigger motors, they waste a lot more fuel they need a bigger rig, bigger sails, you will pay a lot more at marinas, ports, and maintenance.

And only then I would make an option for a specific type of boat. Remember that a hull is only a small part of the cost of a boat ( 1/3 to 1/5) and that doing a world tour in a big boat is going to cost you …well, as I have said, I don’t have a clue, but surely, a lot.

Of course if you do things in a different way, it’s alright for me. I only would not like to see your dreams ending in a rusting hull.

 

Parking in Kalimantan is different, In Jakarta you cant actually park anywher you like....... unlike Kalimantan where you can find a cheap suitable place to dock for a limited time enough for charter purpose...... then why put in marina if you can put it near shore and park uses your smaller RIB boat for landing purposes? Thus cheaper. The charter for the boat will be US$1000 /day excluding fuel. I was offer by a expat family going to Derawan beach, they think I have already build the vessel. The route I would charter is to Derawan, Bali, Manado, Palu, Surabaya, Sumbawa, Semarang, Pulau Laut and Makassar. These are all near Eastern Indonesia, and I will have friends for logistic purposes.

It seem I can build a motoryacht better than a motorsailor, the mast part of the deal seem a bit new to me......... but unstayed mast will be the right choice for easy handling and maintaince.

I am now sending my Nissan Engine to The United Tractor service station to have a professional dealer revaluation on the thing. I will change some to better STD stuff while the rest OEM part.

The hull will not be rusty and sitting waitting for a paint job in a rain. I will build a temporarly shelter for this baby with lighting to do night time work. If the design is fixed and start building, it would be almost a 24 hrs building schdule, I have my surpervisor and me taking shift to see it complete.

I will take X-ray picture of welding I think is not up to standard and do analysis of the structure by Shipwright loftsman Sid Nixon. My Rendering man will show me, my desire to actually shape, and will do CAD. Welding man will be sort and classified by their experience and depend on the tested by our shipyard surpervisor. Inspection on load and structure will be done by Paul of scotland, he have a Llyod cert. and know about the proceedure.

In Balikpapan, You can almost find expat on part-time basis,......... too bad only part-time because they do full time at bigger company.

Vega, any person you know in your are interested in building ship in Indonesia for export? Cheapper lumber and labour...... maybe a proposal?

..................................................................

WDH

 

Indonesia will be a desirable place to charter a motoryacht and have inter-island tour of island to island 1- 4 days with fuel cost of:

Solar - Diesel : Rp. 4,300 = US$ 0.43 per litre
Bensin - Gas : Rp. 4,500 = US$ 0.45 per litre
Pertamax - Premix : RP. 5.550 = US$ 0.55 per litre

Food and hotel is cheap : Good exchange rate..........

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Now the mast I found a web site for superyachts just for the refrence, dont think I'll buy this set...... look expensive.

http://www.formulaspars.com/05-superyachts/assets/Superyacht BrochureV2.pdf

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Wonder where you can order mast and sail in South East Asia with quality to match?


Wellydeckhand

 

I found some reading on old thread that maybe useful for your 2 blades quest. I will prefer to start figuring propellar at 3 - 4 blades configuration, I am thinking of twin engine with one gearbox? It seem the rating is not efficient....... gonna see , find some one to calculate it.

http://www.boatdesign.net/forums/showthread.php?t=384


WDH

 

So What happen to your engine? Cat will be 49,000 while cumm 40,650 for same horse power, u got that free....... I have help you check it up.....

Sorry , I am his cousin decide to use this member to post and relies his dream.

Mayfly

 

The engine Nissan RE8 is small truck engine with 280HP. Monday it will be looked at, fix and put on a dynoworkbench for test running.

Twindisc with a V- drive save more space in the boat....................

to check the rough speed of my boat is 1.34 (square root ) LOA = expected knots , around 10.5 as guessed by Gillimore

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http://www.pyiinc.com/index.php?section=python&action=main&sn=1

Advantages of the system are:
The propulsion system pushes the boat, and not the engine, for more efficient propulsion

Maintaining correct alignment of the gearbox to the propeller shaft is no longer necessary

Even with unequal angles the Constant-Velocity drive shaft guarantees a constant speed of the propeller shaft and reduces wear of other parts of the drive line

Large bearings and maintenance free thrust assembly

Strong Constant-Velocity drive shaft for long life even with high performance engines and heavy gearbox operations

Collet shaft connection makes fitting the shaft to the thrust bearing a simple task with no machining required to the shaft

Thrust bearings and CV shafts can be used as stand alone units to fit your application

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Anybody think Jefa wheel and rudder system is good, I sort of like the design..........

http://www.jefa.com/

http://www.jefa.com/rudder.htm
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On Corrosion subject

http://www.yandina.com/electrolysis.htm

http://www.boatsurveyor.com/corrosion.htm

http://www.islandnet.com/robb/marine.html#CorrosionProtection

http://yachtsurvey.com/corrosion.htm

http://www.boatelectric.com/corrosio.htm

 

Nope! That speed was estimated for the first Lwl you provided in one of your posts.
With actual information Lwl is 58.73' (17.9 m) and correspondent 1.34 speed is 10.27 kn. Economical speed at 1.1 S/L is 8.43 kn

 

Bed room looks............. maroon redish delight and rattan

Well that is comfortable speed, for travelling, if only I can hike it up? Maybe hull extention...... to a longer LOA? It is possible in this stage. The extention to increase speed of 11 knot with no change of power unit? It seem 65 is ok, changing the LOA of the hull may mean bigger fuel consumption and bigger engine.

The 65 ft range with shallow draft is still a river entry possible size.


Any way the bed room will be drape with maroon pattern print cloth to add taste and reduce sound..... easy sleep. I got to be comfortable and homely, expensive look carpet with short fur will prevent cold feet.

The deck furniture will be rattan woven by cane form kalimantan process by Toraja artisant.......

The some of the bed can be order made at reasonable price.


WDH

 

Found PDF on 2 blades

Check this out for comparison.......... 2 and 3 blades and VP

 

Welly -

Picking linen patterns before the keel is laid? Just because you don't worry doesn't mean you shouldn't be concerned

 

He........ I charter the vessel but I want it in style..............Processed leather is cheaper here and Indonesia is a textile advance country....... did alot of export for army clothing all over the world, the fabric is very....... good for the price. The boat would be a homey but dry place to live........ I have a few interior designer friends giving me crash course.

WDH

 

To increase hull speed to 11 kn you need to go to a Lwl of 67.55' so a LOA (keeping proportions with actual design) of around 75'

Simplifying the problem, keeping the same CUNO to keep displacement more or less the same, and so the HP needed, an keeping also the same body draught, beam should have to be diminished to around 13', which will give a narrow boat. Increasing beam to maintain proportions would increase displacement to more or less 60 tons, and so HP needed for propulsion will rise from 205 HP (DIN) to 270 HP, keeping the same HP/D ratio.

Questions: When you say Nissan RE8's power is 280HP, What power are you talking about? DIN or SAE? (This is: with or without engine's appliances?). There can be a significative difference between those two (10% or even more!). For propulsion you need to know the net HP at the engine's shaft, so deducting from SAE power (if it's the case) all its 'hardware' (alternator, pumps, etc) power deductions. So it's more useful to use rated DIN power instead of SAE. Also: Intermittent or Continuous power? You need to know continuous. A rule of thumb is to take continuous as 85% of intermittent, so if they are 280 HP intermittent, what you really have for cruising is rather something like 240 HP

Make yourself sure about this. I always talk DIN power, continuous rating

Remember that if you want the engine power to be able move the boat at hull speed and also move alternators, hydraulic pumps or the like, you need to increase the engine power I estimate, in whatever necessary to move those items plus transmission loses.

A last advise: I'd rather be concerned about fixing principal dimensions, parameters, power and the like at this stage, rather than thinking about the linings (although that's nice and enjoyable, for sure). You have chosen a highly reputed NA for the design, in this case Bruce Roberts. Go talk to him and clarify all this basic design questions, before going ahead with other concerns. That's what I'd do.

Cheers.