A method of winds aloft observation essentially the same as a pilot balloon observation except the height data is derived from the radiosonde observation rather than from assumed ascension rates.

To veer or haul on a rope, slightly, so that a part subject to nip or chafe is moved away and a fresh part takes its place.

The rotation of a horizontal axis wind turbine around its tower or vertical axis.

A two masted sailboat with the shorter mizzen mast placed aft of the rudder post. A ketch is similar, but the mizzen mast is forward of the rudder post.

A control line, usually a multi-purchase tackle, secured to the boom to prevent it from lifting. Can also apply to other spars, such as gaffs.

A thin, reflective foil sheet that exhibits low radiant energy transmission and under certain conditions can block radiant heat transfer; installed in attics to reduce heat flow through a roof assembly into the living space.

Brake Horse Power.

A semiconductor in which holes carry the current; produced by doping an intrinsic semiconductor with an electron acceptor impurity (e.g., boron in silicon).

The enclosure on a water heater, furnace, or boiler.

Horseshoe-shaped test piece used to detect the susceptibility of a material to stress corrosion cracking.

Americans With Disabilities Act

The control ring in a valve which surrounds the seat, used to control pre open and blow down.

A unit of luminance (or brightness) equal to 1/6 candles per square centimeter.

Vertical Centre of Gravity

A multilateral maritime treaty adopted in 1921 (at The Hague, Netherlands). Standardizes liability of an international carrier under the Ocean B/L. Establishes a legal "floor" for B/L. See COGSA

A document issued by the U.S. government; authorizes the export of commodities for which written authorization is required by law.

[meaning]

The situation of two vessels, lying alongside one another, so near that their yard-arms cross or touch.

Passenger/Vehicles Ferry.

The shape of a sail, with regard to its efficiency. Controls such as the cunningham, boom vang, outhaul, traveler, halyards, leech line, sheets, and the bend of the mainmast all can affect sail shape. Also sail trim.