Abbreviation for 'Weight or Measurement;' the basis for assessing freight charges. Also known as 'worm.' The rate charged under W/M will be whichever produces the highest revenue between the weight of the shipment and the measure of the shipment. The comparison is based on the number of metric tons the cargo weights compared to the number of cubic meters of space the cargo measures. The prior English method was one long ton compared to forty cubic feet.
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BULK CARGO
Cargo such as oil, coal, ore, woodchips, etc. not shipped in bags or containers
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DIELECTRIC STRENGTH
A measure of the ability of an insulating material to withstand electric stress (voltage) without failure. Fluids with high dielectric strength (usually expressed in volts or kilovolts) are good electrical insulators. (ASTM Designation D 877.)
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TRAMP FREIGHTER
A cargo ship engaged in the tramp trade.
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COLD CRANKING SIMULATOR
An intermediate shear rate viscometer that predicts the ability of an oil to permit a satisfactory cranking speed to be developed in a cold engine. (CCS)
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CAPACITY PLAN
A plan outlining the spaces available for fuel, cargo, ballast, fresh water, etc, with guides on weight and volume for spaces at various drafts and displacements
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COPPER STRIP CORROSION
A qualitative measure of the tendency of a petroleum product to corrode pure copper.
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ACCELERATION
The rate of change of velocity, as a function of time. Expressed in m/s2.
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ACCELERATION
The time rate of change of velocity; i.e., the derivative of velocity; with respect to time.
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SALINITY
A measure of the concentration of dissolved mineral substances in water.
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COMBI
Vessel designed for a combination of passengers, and different types of cargo.
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