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PostPosted: Wed Aug 17, 2011 3:32 am 
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Location: Hoorn - Holland
Gentlemen,

I’ve joined this forum not too long ago. So it’s my duty to tell you why I have deserved to bear the name of ship modeller :big_grin:

I’ve been building ship models for quite some time now. I think from the age of 12 but there hasn’t been a lot of activity in the last few years. This was because I started studying Naval Architecture in 2003. And all my free time was swallowed by the study and appropriate social activities, read: drinking beer :woo_hoo:

Now since I have graduated in 2008 some more free time is coming back and with the possibility of creating a nice and decent workshop in my newly owned house I started again on my long shelved projects.

In this topic, I will describe my current new building project. It’s not a warship because I got tired of the instable warship hulls (kidding). I was looking for a bit more color and different types of propulsion and found a platform supply vessel which sparked my interest.
I also have a Dutch frigate in the last stages of detailing but it’s too much advanced for creating a building thread.

Comments and criticism are certainly welcome because I speak very little people who do modeling (I'm not yet with a club). This project will, however, take a little while because I have many other hobbies so do not expect daily updates :heh:

My construction method is not standard and it has come with complications in the past but it suits very well now and has giving me good shaped, light and strong hulls. It may even need a separate topic to make it more clear but in short it comes down to the following steps:

1: manufacturing of frames, keel and decks of 2mm smooth cardboard (yes, paper that is)
2: coating the frames with two layers of 0.5 mm cardboard to form the hull
3: fairing hull with polyester plaster to get a smooth hull
4: coarse sand it with a piece of wood to avoid humps and bumps
5: apply two or more layers of epoxy to the hull to make it watertight and strong enough
6: filling of flaws and creating domes and bulbs with filler
7: again a lot of sanding untill it shines and good coating of the inside with paint so no water gets in the cardboard, I usually paint spaces that become inaccessible during construction with paint before the hull is ready
8: final coating of the hull with at least 3 layers of paint and laquer

Than the model. When looking for a new project I wanted to do something different from building naval vessels. Something with more displacement, so it got more stable on the water. And in a larger scale but not to big. Platform supply vessels are great ships to operate on the water because of the interesting propulsion systems build in. And it allows a lot of detailing and colour to be applied.

Image

My experiences with the previous model were that very good and exact drawings are important to a beautiful model. And more importantly to keep in the pace to finish the project in a reasonable amount of time ( I get lazy when having to do too much research :big_grin: ). That's why I wrote the Norwegian shipping company Simon-Møkster Shipping with the request for plans as detailed as possible on one of their ships. I was surprised to see them being very enthusiastic.

Soon I got a mail back with 1:1 CAD yard drawings which were great to show every detail and the exact shape of the hull. I could also use a CAD-program to pick out and enlarge items to print them. After I expressed my enormous gratitude to the company’s technical supervisor I came to the conclusion that something beautiful should be made out of this :smallsmile:

Image

Gr.
Pim

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1/50 ASD Mercurius
1/75 Stril Odin

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Last edited by SMART-L on Sun Aug 21, 2011 6:12 am, edited 1 time in total.

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PostPosted: Wed Aug 17, 2011 3:46 am 
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Location: Hoorn - Holland
Main dimensions are as follows:

Builder: Aker Langsten Norway (2006)
Displacement: 5825 tonnes
Cargo capacity: 4248 tonnes
Length(o.a.): 85.65 m
Width: 19.70 m
Draft: 5.6 m
Height: 30.25 m
Propulsion: 4x Caterpillar 1900 kW gensets, 2x2500 kw azimuthing thrusters, 1x880 kW retractable thruster, 2x880 kW bowthrusters
Max. Speed: 15.2 knots


With a scale of 1/75 this results in a model with:

Weight: 13.8 kg
Length: 114.2 cm
Width: 26.3 cm
Draft: 7.5 cm
Height: 40.3 cm

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1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


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PostPosted: Wed Aug 17, 2011 4:04 am 
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Location: Liverpool
Hi Pim Welcome and good to see you posting on Scratchbuild . It is always interesting to see vessels and marine subjects being built other than warships and this board is testimony to that . best of luck with the build .
Dave Wooley :thumbs_up_1: :thumbs_up_1: :thumbs_up_1:


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PostPosted: Wed Aug 17, 2011 5:03 am 
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Location: Hoorn - Holland
Thank you Dave!

As I'm giving comments on builds of others, I thought I had to show my own work :big_grin:

This is my first start of cutting out the frames and keel out of 2mm cardboard:
Image

Image

Gr.
Pim

_________________
1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


Last edited by SMART-L on Sun Aug 21, 2011 6:07 am, edited 2 times in total.

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PostPosted: Wed Aug 17, 2011 8:01 pm 
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It's going to be interesting to see a Naval Architect at work. :wave_1:

I'm looking forward to seeing your approach on this project!

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PostPosted: Thu Aug 18, 2011 5:05 am 
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Location: Land of the Cheshire cat
That makes at least two of us, :heh: :heh:

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PostPosted: Thu Aug 18, 2011 5:49 am 
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Thanks for your interest guys. But for this ship not a lot of my 'experience' is needed because I got the builders drawings in CAD-format from the owner itself :big_grin:. Offcourse the fact that I'm in the world of shipbuilding helps a lot in getting and especially reading this kind of info. I will keep a close eye on technical details though. And doing a full calculation of stability before she enters the water for the first time.

Gr.
Pim

_________________
1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


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PostPosted: Thu Aug 18, 2011 6:11 am 
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Location: Liverpool
Hi Pim Having a back ground in the industry does indeed help . Looking forward to this build .
Dave Wooley :thumbs_up_1: :thumbs_up_1: :thumbs_up_1:


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PostPosted: Thu Aug 18, 2011 8:47 am 
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Location: Brasil
Hi Smart-L
good boat to build indeed.
i like this type of vessels too.
i have an projet to do one VLCC Tanker too.
waiting for more from you :smallsmile:


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PostPosted: Fri Aug 19, 2011 12:19 am 
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Location: Corvallis, Oregon, USA
Pim,

I am especially interested in what you learn from scaling original ship drawings to scale models, as it relates to shiphandling characteristics of the model. Since water properties don't scale, I suspect it isn't a straight 1:1 linear scaling to get a model that floats and behaves like the real ship.

For example, I know that propeller thrust and RPM don't scale. Ballast calculations are another modelling problem.

Any insight you can share will be much appreciated by all.

Phil

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PostPosted: Fri Aug 19, 2011 5:09 am 
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Hi Phil,

I started a new topic in the tips & tricks section about this subject.

Gr.
Pim

_________________
1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


Last edited by SMART-L on Sat Aug 20, 2011 3:58 pm, edited 1 time in total.

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PostPosted: Sat Aug 20, 2011 9:21 am 
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Finally another non-grey model here!!! I love it!

Generally speaking for manoeuvring of a ship they adapt the rudder shape and size as well as the propellor to get a "real" impression of the manoeuvring characteristics of the real ship. From a modeller point of view, the characteristics will definately not be in scale if you use a scaled down version of the prop and rudder. Shouldn't spoil the fun though :woo_hoo:

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PostPosted: Sat Aug 20, 2011 4:12 pm 
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And I was thinking to be a little weird posting a non-grey model here. I even asked the admin for permisson :big_grin: :thumbs_up_1:

You are totally right Neptune but there are ways to calculate motorsize and prop rpm using a standard prop available in the shops for your model. As said before I'm explaining this in a different topic.

Let's stick to the model here.

With some more progress photo's of the fitting of frames and forecastledeck to the keel.
Already showing the size. I'm used to 1:100 scale warships, makes this a little bigger :heh:

Cutting out the forecastledeck, already taking into account the openings for the deckhouse, anchor chains and stairways down to the maindeck:
Image

Keeping it straight:
Image

Fitting of frames upside down to keep the deck perfectly flat:
Image

Bowsection framed:
Image


Gr.
Pim

_________________
1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


Last edited by SMART-L on Sun Aug 21, 2011 6:06 am, edited 10 times in total.

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PostPosted: Sat Aug 20, 2011 7:33 pm 
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Interesting construction method, shall be watching with interest :thumbs_up_1:

Roy

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PostPosted: Sat Aug 20, 2011 9:06 pm 
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Actually, I did the same with all my "red" ships. Asked for permission as well.
I did put my latest one in grey primer though, disguises her quite well, so people keep visiting the topic. :heh:

I'm quite curious about the outcome of your construction method as well, although Laurent has also used cardboard for RC hulls with success, so I guess it's a valid method!

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PostPosted: Mon Aug 22, 2011 2:39 pm 
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It's a great method producing a far more cleaner workspace :big_grin:
Just be sure to get every part a good coat of paint or epoxy. And it's extremely light as well, ideal for warships.. Although in this case I need the weight. Or I'll be having a ship that can run for days as I can top her with accu's and her engines are far smaller than that of my frigate. (which usually only runs for 2 hours). I'm aiming at a construction weight of 3.2 kg.

Gr.
Pim

_________________
1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


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PostPosted: Fri Aug 26, 2011 9:56 pm 
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Nice start to your build, I wish Simon-Møkster Shipping had a ship or two that I would want to build.
There are not many companies that are willing to share their ship plans these days.

Card board frames will be fine, once the hull is sheeted and fiberglassed, the frames may not even be necessary.

:cool_2:

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PostPosted: Sat Aug 27, 2011 3:50 pm 
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Yes Umi, I was amazed too! But printing out the drawings and using them as a template makes life so much easier now :big_grin:
I keep all the frames in because they come in handy when fitting the hardware and wiring. I'm only removing the upper part of the frames i.w.o. deck openings.

Image

It's weekend so I've had some time to model today :woo_hoo: Finishing the framing towards the stern first. I know there are bigger ships on this forum but for me she is getting quite big! A lot of displacement as well.
Image

Still some frames left fitting:
Image

I've already been starting cutting out the bulkheads as well. They are a little weak now but they will be framed with profiles. When finished this area of the ship can be viewed from the outside so I want them to look real.
Image

Image

And a overall view:
Image

There appears to be a little bump in the maindeck but that has been corrected now :thumbs_up_1:

I'm figuring out ways to make the maindeck watertight because I'll be cutting out a great part of it when the hull is shaped. This way I'll have full access to all the electronics below. But because it sits very low to the water and I'll have functioning freeing ports it has to be sealed. I'm thinking about a rail along the side with a strake of rubber in it. And screws to hold the maindek down. But I don't want to lock and unlock so many screws when lifting the deck. Any suggestions for doing this?

Gr. Pim

_________________
1/50 P4
1/50 ASD Waterstroom
1/50 Stantug 1907
1/50 AHTS Maersk Helper
1/50 AHT Zeus
1/50 ASD Mercurius
1/75 Stril Odin

Believe and act as if it were impossible to fail..


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PostPosted: Sun Aug 28, 2011 2:03 am 
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Very interesting project.I will be watching this .Good luck . :cool_1:

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PostPosted: Sun Aug 28, 2011 2:41 am 
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Great project! :thumbs_up_1:

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