This greatly affects the stability of yachts and boats above all, who do not have a heavy keel. The yacht "Omega", for example, would need to add 93 kg of ballast in the keel, to get the same stability as the boat has a series of aluminum mast.
Another disadvantage of the mast of wood is its large size.
This affects primarily upwind of the wind and is expressed in a significant increase in the turbulent zone of air flow reaching the grotto. On the example of the mast for the boat "Omega" 159) can be established that when the angle of apparent wind at 30 ° to the increase in DP zone of turbulence nearly 56% more than the boat with an aluminum mast.
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If you still think that today the cost of anodized aluminum mast with a boom, spreaders, and all patentrifom individual things is about 3% of the total cost of the yacht, it becomes clear why the wooden mast for the modern yacht could not be more than a subject of debate.
Experienced manufacturers of steel masts have "empirically derived data, in which the basis for calculating the cross section of the mast is only the length and breadth, displacement and sail. With the help of these tables can not be simplified, of course, the optimal minimum mast weight.
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If the manufacturer recommends a specific profile of the masts, he is naturally interested in the fact that it has sustained no damage during warranty. On the other hand, it is important to avoid excessive weight spars. Care should be taken not only to improve the static stability, but also to reduce the mass located far enough from the center of the longitudinal oscillations of the bottom. The latter is usually in the middle of the ship a little ilk waterline. Every kilogram of excess weight increases the tendency of the mast to the keel (longitudinal) and the rolling of the boat and reduces seaworthiness and speed of the vessel.
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Theoretically, you can make light mast, using profiles of a large diameter and thin walls.However, fixing individual things to thin wall grows into a problem, a large cross-section of the mast due to the increase of the turbulent zone of impingement on the main stream with a steep course the wind has a great resistance to movement of the yacht. "