Skittle (boat)

See also: Skittle

The skittle indicates the lowest part of a Bateau. However, this word has various significances according to the type of boat considered:

• With the general direction, the skittle indicates the lower axial part of the hull, with the geometrical direction; one also speaks about line of skittle if this definition does not correspond to any structural member.
• In the navy with veil, the skittle is the basic structural member from which the hull is built.
• On the current metal hulls, the skittle can be vertical (“massive skittle”) that is to say horizontal (“skittle punt”) in which case it is stiffened by a vertical part, the Carlingue.
• On a modern sailing ship, one calls aileron of skittle the fixed vertical appendix placed under the hull in order to place the Lest and to be used as plan antidérive. When this appendix is removable, it is called drift.

Origin

In the ships built out of wood, the skittle was (and is still) the showpiece of the frame of a ship, supporting on the one hand the couples of the vertical frame, the latter receiving the bordering (external) and the Vaigrage (intern) of the ship, other share the feet of Mât S and principal parts intended to support the Gréement fixed on the bridge. The skittle is prolonged with before by the stem and with the back by the stern post.

The invention of the skittle is very old, the Egyptian ships of the time of the Pharaon S included/understood of them already one, and allowed a notable increase in the size of the ships.

The term is often used today wrongly to indicate what is in general either a Dérive, or a ballast, or both at the same time. In the modern ships, when they have a skittle, this one is generally not visible, but dissimulated by the hull and ensures some the mechanical resistance.

The origin of the word comes from the norrois " kjölr". The majority of the terms employed on a ship also come from the norrois.

Aileron of skittle or skittle

The skittle of a boat indicates the lowest part of the ship known as quillard . It makes it possible to maintain this last in balance and is also used as Dérive. The balance of the ship is conditioned by the relative positions of sound Center of gravity and sound Center of hull.

Many ships do not have an aileron of skittle, Trimaran, Catamaran, Prao. These ships make use of supports on the side to be maintained in balance. On the other hand they have Dérive S

It is possible to add a ballast in order to weigh down the skittle and to thus descend the center of gravity.

See too

• Skittle of rolling