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A large body of air having similar horizontal temperature and moisture characteristics.

Category:Meteorology

A written statement signed on oath and witnessed by a commissioner for oaths, usually a qualified.

Category:Financial Terms

In the days of tall ships the barometer was a glass vessel with a thin stem. The fluid in the glass (in most cases water) would move up and down the stem as the pressure of the surrounding atmosphere changed. These movements were used to predict changes i ...

Category:Sea Words

Fixed ports that do not open which are placed in the deck or cabin to admit light.

Category:Sea Words

Houses that have earth berms around exterior walls.

Category:Energy Terms

A mercury barometer designed for use aboard ship. The instrument is of the fixed-cistern type (see Kew barometer). The mercury tube is constructed with a wide bore for its upper portion and with a capillary bore for its lower portion. This is done to incr ...

Category:Meteorology

An opening such as a hole or vent. An opening through which air can pass, or a restricted opening placed in a pipe line to provide a means of controlling or measuring flow.

Category:Sea Words

A group of organic compounds composed of carbon, hydrogen, and oxygen; a series of molecules composed of a hydrocarbon plus a hydroxyl group; includes methanol, ethanol, isopropyl alcohol and others.

Category:Energy Terms

The risk that the buyer or seller will not complete the contract in accordance with their contractual obligations.

Category:Financial Terms

An instrument for measuring the pressure of gases and vapors. A mercury barometer is a type of manometer.

Category:Meteorology

A light source composed of a metal base, a glass tube filled with an inert gas or a vapor, and base pins to attach to a fixture.

Category:Energy Terms

Little or no wind and flat seas

Category:Sea Words

A metal air-tight tank built into a boat to insure flotation even when the boat is swamped.

Category:Sea Words

An industry abbreviation for "Hazardous Material."

Category:Sea Words

That portion of the base metal that was not melted during brazing, cutting, or welding, but whose microstructure and mechanical properties were altered by the heat; Refers to area adjacent to a weld where the thermal cycle has coused microstructural chang ...

The process of plotting a theoretical position or future position based on advancing from a known position using speed, time, and course, without aid of objects on land, of sights, etc. Term comes from deduced reckoning, abbreviated first to "ded reckonin ...

Category:Sea Words

Is a technique for predicting whether water will tend to dissolve or precipitate calcium carbonate. If the water precipitates calcium carbonate, scale forming may result. If the water dissolves calcium carbonate, it has a corrosive tendency.

Category:Sea Words

Type of order given.

Category:Financial Terms

The phenomenon leading to fracture under repeated or fluctuating stresses having a maximum value less than the tensile strength of the material. Fatigue fractures are progressive and grow under the action of the fluctuating stress.

Generation of energy at the location where all or most of it will be used.

Category:Energy Terms