The amount of BTU's/hour or kW's produced by a heating system from the burning of a fuel.

Difference between the temperatures of the dry-bulb and the wet-bulb thermometers of a psychrometer.

A support fixed on the front part of a chassis (which is retractable); used to support the front end of a chassis when the tractor has been removed.

To let out a line or sail slowly; to slacken or relieve tension on a line; to take pressure off.

Maintains and monitors radio, sends and receives messages. Often maintains electronic navigation. Latest replaced with certified GO (Deck officer)

The point or outdoor temperature where the heating capacity of a heat pump matches the heating requirements of a building.

The natural, convective movement of air or water due to differences in temperature. In solar passive design a thermosyphon collector can be constructed and attached to a house to deliver heat to the home by the continuous pattern of the convective loop (o ...

To stand at the mast and pull down on a halyard as another crewmate winches it in.

A type of turbine in which combusted, pressurized gas is directed against a series of blades connected to a shaft, which forces the shaft to turn to produce mechanical energy.

Solid fuels made from primarily wood sawdust that is compacted under high pressure to form small (about the size of rabbit feed) pellets for use in a pellet stove.

The amount of visible light that passes through the glazing material of a window, expressed as a percentage.

A vector term which includes both wind speed and wind direction.

Nested Grid Model generated every 12 hours by NCEP.

A hand held pneumatic tool. Designed for light demolition work, digging, making holes etc.

A type of lamp having a lens of heavy durable glass that focuses the light. They have longer lifetimes with less lumen depreciation than standard incandescents.

Intimate mixture of oil and water, generally of a milky or cloudy appearance. Emulsions may be of two types: oil-in water (where water is the continuous phase) and water-in-oil (where water is the discontinuous phase).

A series of Nansen-bottle water samples and associated temperature observations resulting from one release of a messenger.

Passenger Vessel Association.

A heat storage system that uses a heat storage medium, and where the additional or removal of heat results in a change in temperature.

Biofouling means the accumulation of aquatic organisms such as microorganisms, plants, and animals on surfaces and structures immersed in or exposed to the aquatic environment. Biofouling can include microfouling (microscopic organisms including bacteria ...