To let a vessel's head fall off from the wind (to leeward.)

Related Terms

TO HAUL

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

HEAD WIND

Wind from ahead of the vessel

HEADLAND

A comparatively high promontory having a steep face. Usually called HEAD when coupled with a specific name. Also called FORELAND.

CAPILLARITY

A property of a solid-liquid system manifested by the tendency of the liquid in contact with the solid to rise above or fall below the level of the surrounding liquid; this phenomenon is seen in a small bore (capillary) tube.

HARMATTAN

The dry, dusty trade wind blowing off the Sahara Desert across the Gulf of Guinea and the Cape Verde Islands. Sometimes called the DOCTOR, because of its supposed healthful properties.

GUST

1. A sudden brief increase in the speed of the wind of more transient character than a squall, and followed by a lull or slackening of the wind. 2. The violet wind or squall that accompanies a thunder- storm.

CHILL FACTOR

Calculated number based on temperature and wind velocity.

ICE RIND

A brittle shiny crust of ice formed on a quiet surface by direct freezing or from grease ice, usually in water of low salinity. Of thickness to about 5 centimeters, ice rind is easily broken by wind or swell, commonly breaking into rectangular pieces.

HURRICANE

Wind of force 12 (64 knots and higher or 73 miles per hour and higher) on the Beaufort wind scale.

DYNAMIC SUCTION HEAD

Positive static suction head minus friction head and minus velocity head.

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