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A small request maybe
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ANR
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PostPosted: Mon Jul 09, 2007 10:40 pm    Post subject: A small request maybe Reply with quote

Hi is it posible, that some of you can create this ship. the reason i ask is, that i was onboard this ship back in 1977, from Italy to Nigeria.

http://www.werftarchiv.de/3e82e3864b0412c92653f275fb9c2048/deutsch/schiffsdaten/schiffe_der_buesumer_werft_gmbh/unit_scan_-_schwergutschiff_-_bau_nr._236/index.html Smile

I dont know, if there is enough data, and pictures on this site, to create something.
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Zootier
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PostPosted: Tue Jul 10, 2007 8:43 pm    Post subject: Reply with quote

That looks like a job for Bearsie Laughing
But i will try doing this small ship too!

The data´s are ok, but i havent found any usable Pics of the Unit Scan.

But there is a good pic of here sistership Hercules Scan, maybe i can use that!

I think i can upload it tomorrow.
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Last edited by Zootier on Tue Jul 10, 2007 10:12 pm; edited 1 time in total
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Bearsie
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PostPosted: Tue Jul 10, 2007 9:51 pm    Post subject: Reply with quote

Looks like a nice Job Smile
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ANR
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PostPosted: Tue Jul 10, 2007 10:41 pm    Post subject: Reply with quote

If I remember cirrect, there was some sisterships, to Unit Scan. Named
Unit Scan Tor Scan Hermes Scan, and Hercules Scan, but I also think there was a Freja Scan. All these ships belonged, to a Danish shipping company by the name, of blæsbjerg line, or something like that.
back in the 1970's. Smile
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Bearsie
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PostPosted: Tue Jul 10, 2007 11:10 pm    Post subject: Reply with quote

And she is on her way to you ANR, via email as we speak Smile
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PostPosted: Tue Jul 10, 2007 11:39 pm    Post subject: typo Reply with quote

Ooops ! there is a typo. Embarassed
You need to remove a 1 from this line: <dwt>11278</dwt>
so it looks like this : <dwt>1278</dwt>
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ANR
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PostPosted: Wed Jul 11, 2007 12:26 am    Post subject: Reply with quote

Hello Bearsie. I dont think, that I can ever thank you enough, for doing this nice job. This ship means so much to me, and I have so many great memories, on board this ships. Smile

Regards
Allan
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PostPosted: Wed Jul 11, 2007 8:52 am    Post subject: Reply with quote

you gonna put it on ya web site?
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for my ships,cargo and harbors don't visit my web site as they are not there anymore
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PostPosted: Wed Jul 11, 2007 11:40 am    Post subject: Reply with quote

My version is ready too! I have used the same foto like bearsie did, only my underwater part loks a bit better Razz

I will upload it on my webpage today evening!
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PostPosted: Wed Jul 11, 2007 4:11 pm    Post subject: Reply with quote

She´s online now!

You can find her in the "Massengutfrachter" (german for bulkcarrier) category.

I hope you like her.
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PostPosted: Wed Jul 11, 2007 10:31 pm    Post subject: Reply with quote

All is well that ends well Wink
I like your underwater hull better too Very Happy
At 185 % she looks a bit like a fuel guzzler?
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PostPosted: Wed Jul 11, 2007 10:43 pm    Post subject: Reply with quote

Hello Zootier. Ive seen your version, of Unit Scan, and I think that your work is also very nice. I dont think I can tell you wich one is the best, Bearsie's, or Zootier's. So dont let me choose between them. Wink
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PostPosted: Thu Jul 12, 2007 6:54 am    Post subject: Reply with quote

Bearsie wrote:
All is well that ends well Wink
I like your underwater hull better too Very Happy
At 185 % she looks a bit like a fuel guzzler?

Maybe you are right, i don´t know!

But i think such a small engine couldnt be as effectiv as a big engine in a big ship and they are around 150 to 170 in the game.
So i have taken higher value for the fuel consumption.
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PostPosted: Sat Jul 14, 2007 12:51 pm    Post subject: Reply with quote

The whole fuel consumption issue in the game is an unqualified mess!
I suspect this is because the original formula programmed into the game is too complicated. Even original ships in the game are all over the lot!
From way too low to extremely high

Diesel engines in general use between 150 to 200 grams/KW/hour, period.
Very old Diesels (pre 1940) use a bit more, around 230 grams.
There is a slight difference between 2 cycle and 4 cycle, but the main difference is if the engine uses Diesel or heavy fuel oil, which has different
energy value per gram in BTU (english) or KJ (metric?)

basic write up to be found here: http://en.wikipedia.org/wiki/Specific_fuel_consumption

A while back we had this discussion ( but I can't seem to find the thead now) Either Mooringmann or Hoeftmann gave consumption figures of
coasters he worked on.

Neither speed, size or shape of the ship affect specific consumption.
The only thing that matters from a calculation point of view is the DEVELOPED Horse Power!
And there is half the trick, the HP/KW given for a ship of any size is the "rated" HP/KW at the rated top speed presumably.
so, really all we should need to do in the game is to fine tune consumption between say 90% and 110%
That we have to go as high as 185 % to make it come out shows that the basic formula in the game is seriously flawed.
An example is a bulbous bow, it improves "efficency" by around 10 to 15 %, a bit by better flow charachteristics but mainly simply by making the hull longer. This can be used to either save fuel or run faster.
However it does NOT affect specific consumption!
It simply lowers demand for HP/KW "developed", or needed for a certain speed at a certain draft.
That is why we see one 1000 ton ship @ 10 knots with 600kw and perhaps 2 ton fuel a day and another one with twice the HP/KW (1200 kw) @ 13.5 knots and 4 tons a day. Steam of course is a different ball of wax and there we would have to go to a higher % to make it come out.

I try to find numbers directly for a given ship from the builders where I can, since the formula in the game does not seem to work properly.
My point is simply that we shouldn't have to do this.
The only caveat would be when a builder gives a rated horse power and "service speed" instead of top speed, since service speed is usually not achieved at rated Horsepower but at quite a bit less, usually between 80 to 90 % of rated. in such cases we would be showing a somewhat higher consumption than we are actually using.

The easy way would be for us to rent these ships for a day, do a test run and insert the real value Laughing Wink
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PostPosted: Sat Jul 14, 2007 1:39 pm    Post subject: new spec's Reply with quote

Here are spec's for a brand new freighter of 8500 tons with a nice MAK engine Smile

http://www.maritimeequipment.com/ShowAd.aspx?id=101660

Consumption varies between 10 and 13 tons based on either 80 % or 100 % of rated output.
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