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대구담 2011. 11. 4. 11:26

The Mould framework

Mould

Mould framework

The hull - the shell - of your yacht needs a ribcage.
In the Classical way of building a yacht this consists of ribs and stringers, which remain in your yacht.

The core of a modern yacht can consist of a mould framework, which is only needed for the building phase.

First of all, a frame is built from wooden boards. You can also describe this as the kern of the yacht hull.


 
 
 
Mould

Internal keel

Most yachts are built with both: stringers and ribs, for the parts that come under the most strain. These then remain in the hull and give the yacht great stability under extreme pressure.
The mould framework gives the yacht the optimal hull form during the building phase.


 
 
 
Mould

Fixing

The internal keel is fixed with clamps to the mould.


 
 
 
Mould

Giving shape

The finely aligned rods are fitted closely on one side of the hull.
Each rod is then glued in its exact pre-calculated position with the help of wedges and constraints.


 
 
 
Mould

Internal view

Inside the mould you are looking towards the bow. You can clearly discern

The Mould framework 2

Mould

Precision

The frames are aligned precisely.
The mould framework may look like a ribcage, but is nothing more than the shape of the hull less the exact thickness of the panel layers, which will later be attached on top of it.


 
 
 
Mould

Fine detail work on wood

Rods are applied lengthwise until the optimal shape has been attained.


 
 
 
Mould

View towards the bow

This view shows the starbord side (the yacht has to be turned!) towards the bow section.


 
 
 
Mould

View towards the stern

This view shows the starbord side (the yacht has to be turned!) towards the stern section.


The Mould framework 3

Mallengerüst

Giving shape

The finely aligned rods are fitted closely on both sides of the hull.


 
 
 
Mallengerüst

Optimising the form

Each rod is then glued in its exact pre-calculated position with the help of wedges and constraints.


 
 
 
Mallengerüst

Ideal hydrodynamic form

Great care and precision is necessary so as to achieve the designed ideal hydrodynamic form during lamination.
This explains why each phase of work is so time-consuming.


 
 
 
Mallengerüst

Perfect form

Now you can recognise the exact shape of the hull.

Laminating the first layer

Laminating

Laminating

The hull is laminated keel up.

A highly modern wood composite technique is implemented - the west system, which has been further optimised here at the Shipyard.

Several layers of veneer are attached here out of thin strips.

The inner layers are usually made up of south american Tabasco mahogany.


 
 
 
Laminating

Fitting onto the mould framework

First of all, each layer is attached without resin and stapled onto the frame in order to achieve the optimal fit for each piece and the perfect measurements overall.


 
 
 
Laminating

Fine adjustment

Each piece is fitted precisely.


 
 
 
Laminating

Diagonal carvel

This method of wood veneering requires attaching several layers of mahogany (up to seven).

Two layers are always glued simultaneously to the rest.

To achieve the right adhesive pressure, the boat builders nail the different veneer layers one after another with copper staples through a thin plastic strip.


 
 
 
Laminating

Double diagonal carvel

The layers are glued diagonally, whereas the following layer is attached on top at a 90 degree angle to guarantee great stability and durability.

This well-known method of building yachts, called double diagonal carvel, is extremely time-consuming due to the laying of the layers at a 45 degree angle to the axis, but is technically the optimal method because it requires less maintenance.


 

 

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