main parts

[1] backstay: the wire between the stern and mast, which keeps the mast fixed
[2] boom: horizontal pole that holds the bottom of the mainsail
[3] boom: vang
line that keeps the boom at right angles to the mast
[4] batten: elastic horizontal peace that support mainsail
[5] bow:
the front (pointy) end of the boat
[6] forestay:
the wire between the bow and mast, which keeps the mast fixed
[7] genoa: large foresail that overlaps the mainsail
[8] head:
the upper corner of a triangular sail
[9] hull:
the main body of a vessel
[10] keel: underwater fin attached to the hull that provides stability
[11] lifeline: cable fence around the deck
[12] mainsail:
the sail set on the mainmast and boom
[13] mainsheet: the line that controls the boom
[14] mast:
a spar set upright to support rigging and sails
[15] propeller: engine propelling device with blades
[16] rudder:
a vertical plate or board for steering a boat
[17] shroud:
run from the top of the mast to both sides of the hull
[18] stern:
the back end of a boat, usually the square end
[19] wheel: device used for turning/maneuvering boat
[20] winch: cylindrical device used for tightening lines and sails




type of sails

Sails come in different shapes and sizes depending on position and function. Mainsail, trisail, foresails, jibs and spinnakers are made from woven polyester replaced cotton (Dacron) or plastic laminate (Mylar) each whit it's own advantages and disadvantages.

points of sail

The angle between a sailboat's directions and the true wind is referred to as points of sailing. The points of sailing are divided into three main categories: running, reaching and sailing upwind.

Running - sailing with the wind blowing from behind. The true angle of wind matches the heading of the boat.

Reaching - is sailing with the wind blowing across the boat. On a broad reach the wind blows at an angle of 45 degrees over the transom.

Upwind - is sailing towards the wind. The goal is to point the boat as high as possible towards the wind, at approximately 30 degrees away from true wind