The prescribed level of pollutants allowed in outside or indoor air as established by legislation.

The distance between the water level at chart datum and an overhead obstacle such as a bridge or power line.

A wooden bar which may be shipped in the capstan head for heaving around by hand (to heave up anchor or heavy objects by manpower).

The older name for the Celsius temperature scale. Officially abandoned by international agreement in 1948, but still in common use.

A provision of a bond or preferred stock issue, listed in its indenture (the formal agreement.

(cash against documents) or D/P (documents against payment) or D/P (documents against payment)

In a wind energy conversion system, to pitch the turbine blades so as to reduce their lift capacity as a method of shutting down the turbine during high wind speeds.

A type of insulation, composed of small diameter pink, yellow, or white glass fibers, formed into blankets or batts, or used in loose-fill and blown-in applications.

The part of a measuring instrument which responds directly to changes in the environment.

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 ...

A hypothetical "body" whose surface absorbs no electromagnetic radiation of any wavelength. An idealization exactly opposite to that of the black body. In nature, no true white bodies are known. Moist white pigments exhibiting high reflectivity for visibl ...

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

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.

Pressure dew point temperature (

A lubricating oil made with synthetic base stocks.

The process of rendering a contract or deed null and void following a specified.

The generic term for models which aim to price assets, usually shares or baskets of them, in.

International Labor Organization; Based in Geneva, it is one of the oldest components of the UN system of specialized agencies and has been involved over the years in appraising and seeking to improve and regulate conditions for seafarers. In its unusual ...

The person who is in charge of a vessel and legally responsible for it and its occupants.

Small cask used for carrying drinking water in a boat.