Building and Sailing a Model Yacht
Sailing of a Model Yacht
The submerged portion of the boat is usually called the "Hull" The backbone is called the "Keelson" ; fastened to this is a piece of lead varying in size in proportion to the size of the boat. This is put in place to give the boat stability and power to resist the heeling motion or movement created by the force of the pressure of the wind upon the sails. This is only used on sailing crafts and is known as the "keel".
Most all boats have a portion of the hull extending out over the water. This is called over-hang. This over-hang at the stern is often known as the counter stern.
The extreme portion forward of a hull is known as the stem, while the portions forward and aft of the middle of the hull are sometimes called the fore and after body of a boat.
On large ships the sails are pulled up by halliards fastened to the gaff or upper portions of the sails. These have names according to the sail to which they are attached. For example, there is the jib halliard and the foresail halliards. The sheets are ropes fastened to the lower portions of the sails and are used to guide the boat to a great extent, and to trim the sails, so that the wind will strike them at the correct angle, in order to get the greatest amount of speed. Over the course previously decided upon by the yachtsman.
Much depends upon the arrangement windward or in other words, tack. If the more the yachtsman smaller he makes these the jib sails is too large, the hull will pay of.
Slackens out his jib and foresail (1f there is one), or the jibs, the less power they will have in turning the boat from its set course. On the other hand, if they are trimmed too tightly, or are too large, the greater will be their power to alter the course of the boat. Care must also be taken not to trim the main sail too tightly or too loosely or the same trouble will spring up. One cannot be told on paper just exactly how to adjust these sails.
Only experience gained by sailing the model on the lake will teach this. A great deal depends on the hull as well as on the rigging.
The influence of a sail upon the speed of the boat depends upon the angle that the sail makes with a line drawn through the center of the hull. Of course, not all depends upon the above mentioned facts. That is, the more the yachtsman lets out his sails, the better it will help to speed the boat along. The trimming of the main- sail may hinder or interfere with the adjustments of the jib sails, or vice versa, thus very much care should be taken in the adjustment of the sails if good results are to very much be achieved.
Of the sails whether the boat will beat to it is a fine thing for the average beginner to remember to keep Ms Sails just as slack as possible and still keep the boat on a good course. Then gradually try the boat over the same course with the sails trimmed a little more. D0 this until the best speed has been attained.
He must also remember that piling on sail and increasing the weight of the lead keel will not help. For the lighter the hull, and the nearer an upright position.
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