Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Working Vessels => Topic started by: moller62 on February 08, 2008, 09:29:19 pm
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I came across the newly developed axe bow concept from Damen.nl.
(http://scheepvaartnieuws.punt.nl/upload/thn4_mID_5698_cID_4709_AxB-016copy.jpg)
DAMEN FAST CREW SUPPLIER 330 (http://www.damen.nl/PRODUCTS/DAMEN_FAST_CREW_SUPPLIERS.aspx?mId=8628)
The design seems easy to develop as a hard chine construction.
I tried to make a design using carlson hulldesigner. (http://www.carlsondesign.com/#Fun_Shareware)
The design is available as AXE.txt(rename to axe.hul before opening with carlson).
I find it difficult to use to print facility of the Carlson hull designer, so i have converted it to
a word zip file axe111.txt (rename to axe111.zip).
As a poc. i've made made a smaller mockup in carbon and tape, to ensure that it's possible to develop the chines from Carlson's hull designer to a 'real' hull (tn_axeredwine.JPG / yes the wine is French red wine;-)).
The actual hull will be made from 0.6 plywood.
cheers
Søren
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Damen fast crew supplier
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Damen fast crew supplier 330 is 33 meters in loa. The vessel is depicted above (http://www.damen.nl/PRODUCTS/Damen_Fast_Crew_Supplier_3307.aspx?mId=8628&rId=79&Big=1).
The chines developed in axe111.doc has a length of .44 meters thus indicating a scale of 33 / .44 = 1/75.
The chines has been cut out of .6 mm ply and a temporary assambly of the model vessel is depicted below.
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Work in progress
Remaining work on the hull includes the transom. The aft of the hull has been reinforced with 3x16 mm balsa in order to stiffen the .6 mm ply sides.
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LiveryNext step will be the basic painting of the hull. Damen suggest various different liveries(page 34) in the Pdf document available at http://www.maritiemetechniek.nl/downloads/Bijlboeg%20Gelling.pdf.
The illustrations below originates from the pdf file, that also includes the drawing(page 35) i used when the chines were designed.
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Great looking boat. How are you progressing?
Steve
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Hi Steve
Thx. for your interest. The work is slowly progressing. The driveline has been installed. It consists of a Graupner speed 260 unit and a "noname" micro servo for the rudder control.
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Container load.
Similar to the ill-fated "Aziz" aka "RED PELICAN" (http://www.modelboatmayhem.co.uk/forum/index.php?topic=4192.0), my build has a low aft deck. The builder (Kenny) of the RED PELICAN has modified Hi's vessel in order to avoid future sinkings.I've aligned to Kenny's modification (http://www.modelboatmayhem.co.uk/forum/index.php?topic=4192.80), and added a deck load of 6 20' foot, hollowed out container's, of various owners. Depicted below is the vessel, with the aft deck and the 6 containers temporarily mounted.
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Just a few pics to show the progress of the building. Depicted below is a picture of the real thing in the green livery i've decided to use. The picture originates from: http://www.damen.nl/News/Another_Damen_Fast_Crew_Supplier_3507_for_the_Croatian_Operator_Brodospas.aspx?mId=8565&rId=493
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Pics the real model thing :-)
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The nitty-gritty work
I always seems to be quite fast, at least to my own judgement, when making the basic hull ::). So now comes the slow part where i have to add all the nitty- gritty details.
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Another view with the captain onboard :)
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Nitty gritty #1 Working on the radar mast.
There seems to be some discrepancy regarding the design of the radar mast.
The picture of the red crews supplier, uploaded februar 10, indicates a design including two 'legs' below the radar platform. The drawing depicted below indicates a one 'leg' design and so does several other of the uploaded pictures. As i'm building a semi-scale model of a class, rather than a peticular vessel, i opted for the two leg design. The two 'legs' will make the mast more stable and easier to mount on the roof of the wheel house.
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The mast was constructed of balsa for the 'legs', plywood for the platform and a 3mm square hollow plactic rod for the mast.
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Nitty gritty #2 Wheelhouse windows
As i see it there two ways of making windows.
Either 'cut-away' or not.
As seen on previes pictures i've opted for the 'not-cut-away' style.
I'm using some dark plastic glazing bought at the local office supply.
Below is a picture of the 'naked' wheelhouse with the readycut glazing ready to be glued on.
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Gluing the windows to the wheelhouse proved more difficult than expectet. The glue worked fine but the windows turned darker in areas with glue. As the glue is not totally evenly distributed some area's of the glazing seems darker. This will not be visible 'at sea', but a close pond-side inspectoin will not please the a hard-core shipwright. I've decided to stay with to current glazing and mayby do a rebuild of the wheelhouse another time. As seen on the previes picture the wheelhouse is an independent item of the vessel. Below is picture of the vessel with glazing. the mentioned problem can be seen on the windows in the aft doors. The background of the picture shows my neigborhod i Copenhagen. As the summer has started some of the building efforts has been moved outside to the balcony. The Frech's redwine has been swopped with some latte' ;)
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Stop the press O0
First 'real-life' floating test in the local fountain. (http://vejpark2.kk.dk/apps/monumenter/index.asp?lang=dk&mode=detalje&id=152) She floats a bit to high at the bow and a little low at the stern, so there's ' room for adjustment.
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Looks really nice that bud :)
very nice work indeed with a diffrent kind of boat
well done O0
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Thx Thx. for the nice comment. Below is another picture from the fountain showing the low transom. Hope that moving the batteries forward will solve the problem. Next nitty gritty itrms will be ladders and railing. Cheers :)
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Swan lake ::)
No new nitty gritty details for now :angel:, but a picture from the local modelboat club lake where Swans rule. Surly i'm a little reluctant to make the virgen 'power on' test at my home model boat clubs lake. Take a look at the attack of the swans http://vallensbaekmodelskibsklub.dk/web/080507onsdagsholdet/pages/SNV33036.htm (http://vallensbaekmodelskibsklub.dk/web/080507onsdagsholdet/pages/SNV33036.htm) LOOKS frightening >>:-(
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First sea trial, Titanic (almost) revisited :)
When you are almost finished, only outstanding some nitty gritty stuff, it's always tempting to go for a real sea trial.
So i did.
Before i went i had to move the battreries forward in order lift the transom to the expected waterline. In order to move to the batteries i had to remove some scrap wood. I removed the wood,using a large wood chisel and the batteries moved forward.
What i did not notice was the small crack/split that the operation had left in the bottom of the vessel below the batteries. The aft deck was taped in place so the final works below deck could be performed later and off i went.
At the local fountain i put her in the water, turned on the power and made a u-turn around the sparkling fountain. She looked great.
I examined her, there was a small amount of water inside the hull. I thought it was related the taped deck and water comming from the fountain, so i went to a bigger lake where i could make u-turns without entering the dangerous sparkling fountain water. She sailed well with a nice wave pattern (everybody says that), but continued to take water in.
Nice wave pattern ::)
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I decided to stop the sailing, Tintannic was not revisited, but i was close.
I settled for the theory that water had penetrated via the propeller tube which had not been olied/greased for this firt sea trail.
Home again, inspction of the hull revieled the crack in the bottum.
The crack seen from the inside of the vessel.
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The crack seen from the outside of the vessel, and yes, it my balcony fountain you see in the background ::)
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Glad you told us about the "balcony fountain". I thought it may have been you being sick over your bad luck!
Roger in France.
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Nice result. It's a really interesting hull shape – I may try one myself.
Steve
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Thx for the comment, including the "Balcony one" 8)
I aggree that the hull shape is interesting. I was actually a bit worried about the steering abilities of the vessel because of the deep bow. The vessel is however easily controlled, so mayby the deep stem acts as a pivoting point in the stearing process.
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Nitty gritty, Fendering tires
This was an easy nitty gritty task, altough there's a discrepancy between the design and the actual vessel. Below is the designed fendering only featuring tires as fenders.
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Silni
An actual vessel in this case the Silni has another configuration of fendering. The vessel is depicted below. Origen http://www.boatdesign.net/forums/attachment.php?s=4e8c51ba0204069074d4c0de50738cd2&attachmentid=13370&d=1179556670 (http://www.boatdesign.net/forums/attachment.php?s=4e8c51ba0204069074d4c0de50738cd2&attachmentid=13370&d=1179556670)
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I opted for the original configuration as tires was readily available at the local 'plastic kit pusher'.
The aft tires are spares for a lorry, whereas the small ones were meant for a Unimog.
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Just another picture
I'm not sure whether the real vessel is named Silni form Split or Split from Silni ::)
http://bp1.blogger.com/_2mOeKZzflVE/RcJKVV-MqMI/AAAAAAAAAUw/NCi_O-uqYlk/s1600-h/DSC02086.JPG (http://bp1.blogger.com/_2mOeKZzflVE/RcJKVV-MqMI/AAAAAAAAAUw/NCi_O-uqYlk/s1600-h/DSC02086.JPG)
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Silni
2,200 HP, Crew Boat, Built 2007
REF:-http://www.clarksons.net/register2/register.asp?rOpt=register&rSel=0&showItem=1&search=Si&Page=1&x01_cvn=59424584 O0
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No the wine is not French ;D
In fact i used Danish beer while performing the second sea trial at the local pond.
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Laying calm on the waterline
No dangerous ducks in sight :D
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Almost full (2/3) speed ahead :police:
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Video available
A short video, not including ducks or beer :), will be available at <object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/uGpXBxQvOBg"> </param> <embed src="http://www.youtube.com/v/uGpXBxQvOBg" type="application/x-shockwave-flash" width="425" height="350"> </embed> </object>
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Hi!
What's the advantage of this "axe bow", can anybody please explain?
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The bow design cuts through the waves like an "axe".
It should make for a smoother less stressed ride.
Bob
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Axe bow advantage
The Axe bow concept is specially developed for smaller high speed vessels. The aim of the design is to reduce vertical acceleration (bumping) of the vessel.
A conventional design will, in high seas, follow the wawes up and down, where as the axebow will cut through in stead. The Damen yard claims that for vessels of similair sizes, the vertical accelaration is reduced by 30%, thus enabling the Axe bow vessel to a higher speed in high seas without (to much) bumping. A video from a sea trial can be found at http://www.youtube.com/watch?v=lcvq_Wp-nxQ (http://www.youtube.com/watch?v=lcvq_Wp-nxQ)
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Also: http://uk.youtube.com/watch?v=Y_i6qqFtpno&feature=related (http://uk.youtube.com/watch?v=Y_i6qqFtpno&feature=related)
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Thanks! Now it makes some sense.
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b]Axebow[/b]
I found small article describing the advantage of the Axe bow concept. Extract from he article:
"What is special about the axe bow is that the draught at the fore is deeper than that at the aft. As a result a part of the ship remains in the water in rough seas so that the ship does not start to beat on the waves. The shape is derived from an axe, hence the name." The whole article can be found on . The article describes a vessel (type 5009) slightly larger than the one i've build a model of. I expect my next model to be of this vessel build to a scale 1:50 giving the model a length of appprox 1 meter. The vessel is depicted below. The picture originates from [url]http://directory.workboatshow.com/index.php5?id=1119955&Action=showProductPicture&bmp=0773409f605f85ae867311333b7a3f0c]http://www.tos.nl/file/nl/index.asp?pagina=312[url]. The article describes a vessel (type 5009) slightly larger than the one i've build a model of. I expect my next model to be of this vessel build to a scale 1:50 giving the model a length of appprox 1 meter. The vessel is depicted below. The picture originates from [url]http://directory.workboatshow.com/index.php5?id=1119955&Action=showProductPicture&bmp=0773409f605f85ae867311333b7a3f0c (http://www.tos.nl/file/nl/index.asp?pagina=312[url)
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Den er sku fint Hr Møller!!
The attack of the Vallensbæk swan: is he still at it?
Did they ever get that jet ski back from the swan?
I rather like the look of the red one. Boat not swan!
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New Axebow supplier
I'm actually in progress of building my new model.
I have published my work on the Danish forum: http://www.skalamodelskibe.dk/news.php (http://www.skalamodelskibe.dk/news.php)
This is unfortunately in the Danish language, but thx to Google is available in 'proper' English as well.
Hope you enjoy.
Cheers from Copenhagen ok2
Thread in Danish:
http://www.skalamodelskibe.dk/forum/viewthread.php?thread_id=162 (http://www.skalamodelskibe.dk/forum/viewthread.php?thread_id=162)
Thread in 'proper' ;-) English:
http://translate.google.dk/translate?u=http%3A%2F%2Fwww.skalamodelskibe.dk%2Fforum%2Fviewthread.php%3Fthread_id%3D162&sl=da&tl=en&hl=da&ie=UTF-8 (http://translate.google.dk/translate?u=http%3A%2F%2Fwww.skalamodelskibe.dk%2Fforum%2Fviewthread.php%3Fthread_id%3D162&sl=da&tl=en&hl=da&ie=UTF-8)
Preview of the new build