venerdì 16 aprile 2010

The mast-step

It is easy to imagine how a sail can move a boat: the wind blows on its surface, and since the sail is tied to the mast, that is connected to the boat, the boat goes. But to convey the wind energy to the boat's hull, and to do it in a proficient manner, is a serious problem to face, to avoid that mast and sail fly away while the boat stay still.
So the mast cannot be a simple pole, but a whole system due to resist strains while absorbing shocks potentially harmful to the hull. The first element of this system that Michele Cafiero assembles on his gozzo "S. Maria del Lauro" is the mast step.
It is a wooden pedestal that is tightly connected to the hull, with a hole where the bottom of the mast will fit in, after passing through another hole in the mast-hole, a plank placed at deck height. The position of the mast-step, that is to say the position of the mast, will affect the manoeuvrability of the boat, her trim during different reaches, and the centre of maneuver itself.
The lateen sail was seldom used by Alimuri fishermen: the Bay of Naples' winds are whimsical and changing, but who knew how to exploit them had a remarkable aid to the hardships of rowing. To save room, the mast was close to the bow, even if this arrangement made the boat quite unbalanced and hard to be kept in course, under sailing. With a concession to evolution, the lateen sail mast of Mast'Antonio's and Michele Cafiero's gozzo will stand in a more central position than the original 1919 boat.

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