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Wooden model keel

Wooden model keel To produce a cement mould for the keel, into which the liquid cement is poured later on, we first of all need an exact wooden copy of the lead keel.

 
 

Individual parts The overall form is made up of individual handcrafted parts, whose significance is not clear at first glance.

 
 

 
 

Keel fin Here, you can recognise part of the assembled keel fin which will later be attached to the keel.

 
 

Joining the individual parts together While joining the individual wooden parts together, you can slowly recognise the shape of the keel.

 
 

Gluing All the parts are carefully glued together so that the negative form bears up to the load of pouring in cement, and also matches the actual keel one hundred percent.

Sanding the wooden model keel

Sanding the wooden model The wooden model keel must have the exact same shape as the actual keel and so requires a great deal of fine detail work. The wooden surface must be evened out using filler before we can even begin sanding

 
 

Sanding form After the filler the keel is smoothed using special sanding forms.

 
 

 
 

Fine detail work This tedious work requires great care and precision.

 
 

Points for hanging On the finished wooden model - here with the beautifully curved edge of the keel - you can clearly see the hanging points for the wooden box.

Cement box for the wooden model keel

Cement box With this view from above you can clearly see how the model keel is fitted into a two-part wooden box for pouring in the cement later.

 
 
 

Bracing The wooden shape of the keel is fixed tightly to the wooden box to avoid movement while pouring in the liquid cement.

 
 
 

Foto: Yachtbild - Kai Greiser www.yachtbild.de

Negative shell After pouring in the cement and allowing it to harden, the wooden model is removed from the negative shell of cement.

 
 
 

Foto: Yachtbild - Kai Greiser www.yachtbild.de

Basis for the lead keel This negative cement shell is made up of two pieces and serves as the mould for the actual lead keel.

 
 
 

Foto: Yachtbild - Kai Greiser www.yachtbild.de

Bow Here, you can clearly see the bow shape of the cement model.

 
 
 

Foto: Yachtbild - Kai Greiser www.yachtbild.de

Scale The scale and weight of this cement model should not be underestimated. A solid steel framework is needed to contain it. With this negative cement shell a specialized company is then casting the keel of the yacht.

Keel Bolts

Keel bolts The keel is bonded to the hull and bolted with keel bolts.

 
 
 

Grease The bolts are covered in grease so that they can be easily tightened after the keel has been bonded to the hull, and to ensure these connecting points are perfectly water-tight.

The Keel

Keel A lead keel weighing several tons, like this one, is attached underneath the yacht.

 
 
 

Keel bolts Several keel bolts are necessary for this. They are fixed to the hull with screws on aslant metal brackets.

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