An instrument for measuring the frost point of the atmosphere.

An aid to taking as astronomical sight with a sextant when the sea horizon is obscured through haze, fog, or darkness.

See embrittlement.

(SEE NEAPED)

Percentage of freight payable to broker (by owners in c/p's) or applicable to sale or purchase.

A measure of luminous flux remaining in a light beam after it has passed through a specified distance of the atmosphere.

Special Periodical Survey of Automated Control System

A type of furnace or reactor in which the emission of sulfur compounds is lowered by the addition of crushed limestone in the fluidized bed thus obviating the need for much of the expensive stack gas clean-up equipment. The particles are collected and rec ...

For a given location, a measure of the long-range effectiveness of precipitation in promoting plant growth. Also called precipitation-evaporation index.

Partly Protected Water Service in Philippines.

A large power plant that generates power for distribution to multiple customers.

Wind blowing from off the shore.

A port that is not directly listed in the tide tables but for which information is available as a difference from a nearby standard port.

Same as Aeolian.

A type of heating system where water is heated in a boiler and either moves by natural convection or is pumped to heat exchangers or radiators in rooms; radiant floor systems have a grid of tubing laid out in the floor for distributing heat. The temperatu ...

See principal stress (normal).

Differences between the compass reading and an actual magnetic direction caused by magnetic forces in the vicinity of the compass, which are usually the result of masses of metal, speaker magnets, etc. (2) Vessel departure from specified voyage course.

The leaning of a boat to the side because of excess weight on that side; inclination of a boat due to excess weight on one side or the other.

Being or composed of matter other than hydrocarbons and their derivatives, or matter that is not of plant or animal origin. Contrast with organic.

A hoisting apparatus consisting of a block and tackle rigged at the end of a beam.