sail shape - The shape of a sail, with regard to its efficiency. In high winds a sail would probably be flatter, in low winds rounder. Other circumstances can cause a sail to twist.
The tightness of the halyard can affect sail shape.
Hand - A member of the ship's crew.
Hand Bearing Compass - A small portable compass.
Hand Lead - A weight attached to a line used to determine depth by lowering it into the water.
Battens: stiffeners that fit into pockets sewn into the aft edge (leech) of a sail; they stiffen the loose edge and provide more usable sail area and a better sail shape.
Beam: the width of the hull at its widest point.
Primarily used to control the angle of the boom, and thereby the mainsail, this control can also increase or decrease downward tension on the boom while sailing upwind, significantly affecting sail shape.
While nobody disputes the loss of sail shape and area by having your mainsail cut for a furling system, the advantages of easily flying the right amount of sail often make up for the lack of sail shape.
Sail shape is the draft and appearance as created by the sail.-maker and adjusted by the sail trimmers in the crew. A sail slide or sail hank (sail slug) is a metal or plastic device that secures a sail to a mast or stay.
A line used to tension the foot of a sail, used to maintain proper sail shape.
outrigger
A floatation device attached to one or both sides of the hull to help prevent a capsize.
A line used to control the tension along a sail's luff in order to maintain proper sail shape.
current
The movement of water, due to tides, river movement and circular currents caused by the motion of the earth.
Halyard
A line used to hoist a sail or spar. The tightness of the halyard can affect sail shape.
Harbor
An anchorage protected from storms either naturally or by manmade barriers.
Batten: In America's Cup yachts, thin strips of composite material inserted into pockets in the sails to maintain proper sail shape and to support the curved leech, or rear edge, of the sails, particularly the mainsail.
When trying to negotiate upwind, a flatter sail shape is more desirable.
On most sailboats with a furling jib, the jib sheet comes back to a moveable block mounted on the deck, as in this photo. This block can be moved forward or aft for optimum sail shape with different amounts of sail unfurled.
Boom Vang:
Any system, usually block & tackle or hydraulic, used to hold the boom down. This is useful for maintaining proper sail shape by exerting a downward pull on the boom, particularly when running or on a broad reach.
The position of the sails relative to the wind and desired point of sail. Sails that are not trimmed properly may not operate efficiently. Visible signs of trim are luffing, excessive heeling, and the flow of air past telltales. Also see sail shape.
This is useful for maintaining proper sail shape, particularly when running or on a broad reach.
Boot stripe: a different color strip of paint at the waterline.
Bow: The forward part of the vessel.
Bow line: A docking line leading from the bow.
 See also: Boat, Sail, Hull, Point, Line
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