Measurement Goods. Cargo in which freight is based on the amount of space goods occupy in the ship carrying them.
Measurement of Ships. Determination of a ship's displacement. Gross, Net and Under-Deck Tonnages, Draught, Freeboard, Length and Breadth.
Mechanical Advantage. Ratio between force applied and weight lifted when using a purchase or other machine.
Mechanical Integrator. Instrument used for finding a vessel's displacement and moments of displacement by moving a pointer along line of sections of body plan; this movement actuating registering mechanism.
Mechanical Navigation.* Former name for ship handling and manoeuvring.
Mechanical Stoker. Machine that feeds furnaces of a coal-fired vessel.