A small local current usually caused by tidal streams as they ebb and flow around or against obstructions.

The interval between the lower and upper measuring limits of an instrument, i.e. a thermometer with a range of -35 to 50

Stemming the tide or sea means to head the vessel's bow directly into the current or waves. Overcome adverse circumstances.

A device that removes contaminants, by mechanical filtration, from the fresh air stream before the air enters the living space. Filters can be installed as part of a heating/cooling system through which air flows for the purpose of removing particulates b ...

A room heat delivery (or exchanger) component of a hydronic (hot water or steam) heating system; hot water or steam is delivered to it by natural convection or by a pump from a boiler.

A temperature-sensing element which converts thermal energy directly into electrical energy. In its basic form it consists of two dissimilar metallic conductors connected in a closed loop. Each junction forms a thermocouple. If one thermocouple is maintai ...

Merchant Navy Training Board

Use of individual carrier/rail equipment through a central agency for the benefit of carriers and shippers.

An order placed with a broker to purchase or sell stock, a commodity or financial instrument at.

A pipe lead-in for anchor chain through ship's bow.

A measure of the number of cycles or wavelengths of electrical energy per second; U.S. electricity supply has a standard frequency of 60 hertz.

An electrochemical battery that uses lead and lead oxide for electrodes and sulfuric acid for the electrolyte.

The trapping of light inside a semiconductor material by refracting and reflecting the light at critical angles; trapped light will travel further in the material, greatly increasing the probability of absorption and hence of producing charge carriers.

Metal strip and lead fastener used for locking freight car or truck doors. Seals are numbered for record purposes.

The foremost sail; a triangular shaped foresail forward of the foremast.

Forming an adherent phosphate coating on a metal by immersion in a suitable aqueous phosphate solution. Also called phosphatizing. See also conversion coating.

To heave in until the vessel is riding nearly over her anchor.

A form of thermal energy resulting from combustion, chemical reaction, friction, or movement of electricity. As a thermodynamic condition, heat, at a constant pressure, is equal to internal or intrinsic energy plus pressure times volume.

A vessel designed for the transport of people or goods from one place to another on a regular schedule.

The visibility along an identified runway, determined from a specified point on the runway with the observer facing in the same direction as a pilot using the runway. Compare to runway visible range.