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Battleship Bretagne - France - 3D realisation - 1:200 scale


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On 9/7/2022 at 10:02 AM, Killingholme said:

I also enjoy this thread because I am learning about the design and construction considerations of dreadnought battleships. I have just realised, for example that the forecastle is considerably shorter than on an equivalent British ship of the period. I guess that is because of her being designed to work in the inshore seas such as the Mediterranean?

 

Will

I found a comprehensible explanation for this arrangement of the main artillery on the internet:

For the construction of the ships, however, the dimensions were tied to the size of the docks of the French shipyards. The dimensions of the ships should be the same as those of the Courbet class and thus be 166 meters long and 27 meters wide. In order to be able to accommodate the new, larger and therefore heavier guns, they had to be moved closer to the bow and stern of the ships.

Regards 

Andreas

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Tks Andreas, very interesting. 👍

 

You can see how it works here:

 

The two shoes move apart thanks to the screw at the bottom (one step to the left and one to the right), the lower yellow friction pad which is placed on top of it rubs more or less on the cable, braking it with the help of the upper wedge. This screw is driven by the bevel gear return, the chain and the large flywheel.

 

The upper wedge with the two handles is also adjustable with the other handwheel, it can be slid into the device, so that the wear due to friction can be compensated. Spare parts are available for the top corner and its opposite wedge. 

 

I don't know what the material is, maybe a Ferodo type material.

 

"Ferodo is a British automotive supplier based in Chapel-en-le-Frith in the non-metropolitan district of High Peak, Derbyshire. The group specialises in the manufacture of braking products for both consumer and competition use1.

History
In 1897, Ferodo began manufacturing brakes for carts.

In 1902, Ferodo introduces the first brake lining: an innovative and revolutionary step in the world of braking

In 1922, Ferodo became the first company to supply original linings for production cars, equipping the Austin 7.

Ferodo became the first company to stop using asbestos in brake linings by 1980"

 

There's still a lot of stuff missing, the design is far from finished.

 

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Small progress:

 

The cable brake still needs to be designed.

 

We can see the spare corners and counter corners on the intended platform.

 

Screenshot-2022-09-14-13-01-11-729.jpg

 

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It's coming to an end, I'll be able to continue the ship. There are still a few things to rectify and draw.on the brake.

 

A new and different rendering, the Fusion360 app on IPad, this app only allows visualization and measurements.

 

0-D59054-A-1-F07-4933-9-F7-A-2-C3-AF96-A

 

28724573-3017-4-A1-F-8-E59-03-BC7-F749-A

 

6-E6035-F7-97-B0-4-A44-810-B-AE988-BEB1-

 

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A18-F6322-2351-4-B82-899-A-9293-A272-ABB

 

B4-B0053-E-00-AA-42-DA-BC03-B0-C2-DE91-F

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This evocation of a 1907 Moissenet stopper from the Battleship Liberty is finished. 

 

I'll see if I have time to animate it, otherwise my friend Bernard will do it. 

 

The strut works on compression here. It is on the back of the stopper. The deck is reinforced at this point.

 

Stoppeur-Moissenet-1907-Cuirasse-Liberte

 

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There were also Moissenet claws that allowed to stoppering off a cable. 

 

C2971306-238-F-4531-A84-D-5721991-A9342.

 

DF2-BAE1-C-48-F4-41-EF-B0-C1-227841-F72-

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It would be excellent to see this apparatus in animation. Such a visualisation would certainly help understand the systems of 20th century battleships. Indeed, a museum may be interested, and failing that, the "Dreadnought Project" website would be interested.

 

Will

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I agree with Tony; amazing stuff.

 

Only just caught up with this project.  If I have understood which part you mean (and knowing that “braies” were baggy trousers worn by the Gauls), I think the term you are looking for on the gun barrels is “blast bags”

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On 9/18/2022 at 1:46 PM, Ex-FAAWAFU said:

braies” were baggy trousers worn by the Gauls), I think the term you are looking for on the gun barrels is “blast bags”

One and the same then, surely? Especially after filling up on haricots vert, onions, and garlic!

 

Lovely work on the Moissenet, I just wish I understood what exactly it was. From your description I get the idea that it locked the rudder so the ship could be towed, but I'm not sure I got that right.

 

Ian

 

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This towing cable stopper allowed the battleship to tow another ship damaged or out of propulsion during a fight or other events. The tension on the cable could be managed by this device.

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For the moment I'm focused on the 1915 version in terms of drawing. I will draw the 1940 version next, as I now have the necessary plans. It's a long job.

 

After a few days of vacations, I'm back to playing the 3D mouse.

 

A nice stay on the Ile de Ré, France. 

 

Lighthouse of the Whales, September 22nd, the weather was nice! 

Personal photo. Click to enlarge
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Today I worked on the rear of the ship and its 140 mm casemates.

 

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Tks all! 

 

Drawing of the rear main deck with camber, and the first deck. The casemates of the main deck, plus some details.

 

I have the flagstaff to tilt at the stern.

 

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I did quite a bit of documentary research today on the stern of the ship, the layout of the deck maneuvers, capstan, ventilation ducts and skylights.

 

I have very few pictures of the stern, or the few I have are of the Lorraine or Provence, arranged differently.

 

So I didn't make much progress today. But I learned a lot of things.

 

There is still a lot missing.

 

Screenshot-2022-09-26-23-53-19-490.jpg
 

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Thanks Rob, It will be necessary to transform this drawing in the real world and that it remains as beautiful. 😅😜

 

Thanks to HD photos of the Bretagne found on the US site:

 

https://www.history.navy.mil/content/history/nhhc/search.html?q=BRETAGNE French battleship&ts=false  

        

I redrew the windlass/cabestan, the mooring bollards, different from the front ones, the air vents, and the sighting radomes for the torpedoes.

 

A system to calibrate the guns can be seen, probably, on two pictures.

 

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This one is from elsewhere. We can see a typical skylight, very interesting.

 

You can see on the deck the rails for the mobile projectors.

 

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Not too much progress today, some housework took me a lot of time this week and it's not over...

 

Drawing of the aft strait or stream anchor, this evening. There is still the system that allows the anchor to be tipped overboard to be made, called " Mouilleur ".

 

The stream anchor keeps the ship in a defined axis in a river or a narrow place with or without current. Generally, the two front anchors are dropped in crow's feet, then the strait anchor is dropped backwards, releasing chain at the front, and then backwards to obtain a balanced position with enough links in the water at the front and at the back so that it does not slip.

 

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Lovely work Pascal.

 

Just for fun, here is a picture of this type of anchor (though the version with folding flukes) that I scratch-built in brass for my seaplane tender.  1:12th scale so of course it all works.  The pin on a chain at the base of the main arm locks the flukes in place.  The shackle below this is for the recovery line used to un-stick the anchor

 

641C2F5C-F76B-4FB0-A7C9-A3E956EFD061

 

Love watching your drawing work

 

Cheers

 

Steve

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Your anchor is great, Steve, a little jewel, you must have spent a lot of time on it... 😉

 

Drawing of the anchor's tilting system overboard. Addition of details on the anchor. There are still some accessories to draw, including the mast that allows the anchor to be positioned.

 

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I had finished drawing the mast of the rear anchor when I realized that on the 3 ships of the class, they were all different. I had drawn the Lorraine's. The fact that the 3 ships were built in 3 different shipyards, St Nazaire, Lorient and Brest, may explain the difference.  

 

So I redid the upper part of the anchor mast, the lower part being more or less identical. 

 

Provence:

 

Screenshot-2022-10-02-11-15-33-713.jpg

 

Lorraine:

 

Screenshot-2022-10-02-11-15-56-636.jpg

 

Bretagne:

 

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Screenshot-2022-10-02-11-14-29-995.jpg

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