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.


Related Terms

DANGEROUS CARGO ENDORSEMENT

An endorsement issued by a flag state administration to a certificate of competency of a ship’s officer allowing service on dangerous cargo carriers such as oil tankers, chemical carriers, or gas carriers.
Depending on the position and degree of personal responsibility, the following types of evidence are determined: tankerman - minimal responsibility, assistant - personnel directly involved in cargo operations, responsible person - personnel directly responsible for cargo operations and compliance with safety measures during cargo handling.

BULK CARGO

Cargo such as oil, coal, ore, woodchips, etc. not shipped in bags or containers

TRAMP FREIGHTER

A cargo ship engaged in the tramp trade.

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

COMBI

Vessel designed for a combination of passengers, and different types of cargo.

DERRICK

A device for hoisting and lowering heavy weights, cargo, stores, etc

DUNNAGE

Cushioning material placed among cargo to prevent their motion

GENERAL CARGO

Non-bulk cargo. The cargo may be of various kinds

FARDAGE

A wood placed in bottom of ship to keep cargo dry

CARGO HANDLING

The act of loading and discharging a cargo ship.

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