A calorimetric radiation instrument of historic interest used for the measurement of outgoing heat radiation from the earth during an interval of time. The time integration is performed by allowing the radiation to fall on an uninsulated vessel containing ...

An electrical generator that runs at a constant speed and draws its excitation from a power source external or independent of the load or transmission network it is supplying.

Old and experienced seaman.

National Technical Information Service.

(See RNR)

A balloon used to carry a radiosonde aloft, considerably larger than pilot balloons or ceiling balloons.

The direction, at any point on the earth that is geographically in the northern hemisphere, facing toward the South Pole of the earth. Essentially a line extending from the point on the horizon to the highest point that the sun reaches on any day (solar n ...

To pass a turn around a belaying pin or cleat.

One mole is the mass numerically equal (in grams) to the relative molecular mass of a substance. It is the amount of substance of a system that contains as many elementary units (6.023 exp23) as there are atoms of carbon in 0.012 kg of the pure nuclide C1 ...

40 cubic feet.

Error that can be introduced when not reading an instrument, such as a compass, directly from its front, due to the separation of the indicator and the scale being read.

Passenger Ship Safety Certificate

A unit of work, being the work done in one hour at the rate of 1,000 watts.

A halyard used to raise the spinnaker.

An arrangement whereby a steamship company, under rules and regulations established in the freight tariff of a given trade, accepts small packages at rates below the minimum bill of lading, and issues a parcel receipt instead of a bill of lading.

The supportive structure of a building.

The component of a central receiver solar thermal system where reflected solar energy is absorbed and converted to thermal energy.

See 'Federal National Mortgage.

A market in which there are more sellers than buyers resulting in falling.

Brittie fracture of a normally ductile material in which the corrosive effect of the environment is a causative factor. Environmental cracking is a general term that includes corrosion fatigue, high-temperature hydrogen attack, hydrogen blistering, hydrog ...