1. A smooth curve, usually referring to a line of the hull which has no deviations. 2. To make something flush. 3. A line is fair when it has a clear run. 4. A wind or current is fair when it offers an advantage to a boat.

Related Terms

RESTRICTOR

A device for producing a deliberate pressure drop or resistance in a line by reducing the cross-sectional flow area.

SEEBECK EFFECT

When two different adjacent metals are heated, an electric current is generated between the metals.

AMMETER

An instrument for measuring the magnitude of electric current flow.

ARC

A flash, caused by an electric current ionizing a gas or vapor.

ALIVE

A term referring to a circuit in which a current is flowing. Also referred to as live.

ALTERNATOR

A device which converts mechanical energy, into alternating current.

HARMONIC FUNCTION

Any real function that satisfies a certain equation. In its simplest form, as used in tide and tidal current predictions, it is a quantity that varies as the cosine of an angle that increases uniformly with time

GRID RHUMB LINE

A line making the same oblique angle with all grid meridians. Grid parallels and meridians may be considered special cases of the grid rhumb line.

HARMONIC CONSTANTS

The amplitudes and epochs of the harmonic constituents of the tide or tidal current at any place

TO HAUL

To change the course of a sailing vessel to bring the wind farther forward, usually used with up, such as haul up.

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