Manifest – A list of the goods being transported by a carrier.
Maquiladora – A foreign plant operating under an in-bond program whereby components may be shipped into Mexico duty-free for assembly and subsequent reexport. Maquiladora plants are also known as Twin Plants.
Maritime Administration (MARAD) – A U.S. government agency, while not actively involved in vessel operation, that administers laws for maintenance of merchant marine for the purposes of defense and commerce.
Mark – (See Consignee Mark, Markings, Port Marks)
Markings – The physical markings on a product indicating the country of origin where the article was produced.
Mate’s Receipt – Receipt of cargo by the vessel, signed by the mate (similar to a dock receipt).
Measurement Ton – The measurement ton (also known as the cargo ton or freight ton) is a space measurement, usually 40 cubic feet or one cubic meter. Cargo is assessed a certain rate for every 40 cubic feet or one cubic meter it occupies.
MERCOSUR – A trade alliance between Argentina, Brazil, Paraguay and Uruguay, with Chile and Bolivia as associate members.
Min. B/L – Minimum Bill of Lading.
MM – Mercantile Marine.
M/R – Mate’s Receipt.
M/T – Metric Ton (2204 Ibs).
mt. – Empty.
M/V or MV – Motor Vessel.
MW – Minimum Weight Factor.