A lower-than-usual tariff rate assessed because a shipper offers a greater volume than specified in the tariff. The incentive rate is assessed for that portion exceeding the normal volume.

Free Water

Seaman's term for the period of work on board ship for which he has been paid in advance when signing on.

A halo phenomenon consisting of a horizontal circle passing through the moon, corresponding to the parhelic circle through the sun. Produced by reflection of moonlight from ice crystals.

Rate of wind movement in distance per unit time.

A component of the wind (often using Cartesian coordinates. i.e. X and Y wind vectors). Also, an arrow representing wind velocity, drawn to point in the direction of the wind and with a length proportional to wind speed.

A manmade waterway used to connect bodies of water that do not connect naturally. Canals use locks to raise and lower boats when connecting bodies of water that have different water levels.

An apparatus, used in studying soil temperatures, for measuring the total supply of heat during a given period.

A description of how well people in a lighted space can see to do visual tasks and how visually comfortable they feel in that space.

That part of a ship's bow where the hawse holes and hawse pipes are situated.

Cotton yarn used for cleaning purposes.

A container designed with openings in the side and/or end walls to permit the ingress of outside air when the doors are closed.

In financial services, the period after signing a contract during which customers are entitled to.

Owners or operators of vessels providing transportation to shippers. The term is also used to refer to the vessels.

A winch, frequently unpowered, having rope storage capacity and used for topping and lowering a derrick boom while the boom is unloaded and for supporting it while it is supporting a load.

The volatility of the underlying instrument implied by the market value option's.

Surface discoloration of a metal caused by formation of a thin film of corrosion product.

A type of photoelectric photometer used to measure high-altitude winds on the assumption that stellar scintillation is caused by atmospheric inhomogeneities being carried along by wind near the tropopause level.

A heating system where heat is supplied (radiated) into a room by means of heated surfaces, such as electric resistance elements, hot water (hydronic) radiators, etc.

A short piece of rope secured in the bow of a small boat used for making her fast.