Waste-to-energy is the process of generating energy in the form of electricity and/or heat from the primary treatment of waste, or the processing of waste into a fuel source.

Waste-to-energy plants burn solid waste, often called garbage or trash, to produce steam in a boiler that is used to generate electricity.

A time period, usually of four hours, e.g. 12-4, 4-8, 8-12, which operates round the clock.

An alarm that is transferred from the bridge to the master and the backup navigator in the event deficiency (absence, lack of alertness, no response to another alarm/warning, etc.), of any officer on watch.

The watch alarm system urges the officer on watch at a predetermined time to acknowledge his watch-keeping awareness.

Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms.

Water cooling is a method of heat removal from components and industrial equipment.

Some tankers have a fixed system to give a protective water curtain between the cargo deck and the superstructure.

The water cycle, also known as the hydrologic cycle or the hydrological cycle, describes the continuous movement of water on, above and below the surface of the Earth.

A suspension in the atmosphere of water divided into coarse drops by delivery through a special nozzle for use in fire fighting.

Hydraulic shock (water hammer or fluid hammer) is a pressure surge or wave caused when a fluid, usually a liquid but sometimes also a gas, in motion is forced to stop or change direction suddenly.

Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature.

Water level, also known as gauge height or stage, is the elevation of the free surface of a sea, stream, lake or reservoir relative to a specified vertical datum.

A device to provide a visible indication of water level in the boiler.

Water resource management is the activity of planning, developing, distributing and managing the optimum use of water resources.

Water, added to the separator bowl to prevent the oil from leaving the bowl through the water outlet, in the purifier mode.

A suspension in the atmosphere of water divided into coarse droplets delivered through a special nozzle for use in fire fighting.

In water tube boilers, water circulates in tubes heated externally by hot exhaust gas from an engine.

A rotory engine that converts water energy into power from its flow from height. Usually found in water dams.

A water wheel is a machine for converting the energy of flowing or falling water into useful forms of power, often in a watermill.