Merchant Navy Technical Vocabulary

Plain-language explanations of common engine room and deck terms found in MEK and GAK study material.

Knowing the vocabulary makes both MCQs and oral questions much easier. The meanings below follow the study material used on ClassZee.

Engine room terms

Strainer: separates large solid impurities from a fluid.
Filter: separates fine solid particles from liquid, air or gas.
Centrifugal purifier: separates solid impurities and water from oil by centrifugal force.
Joint (gasket): prevents leakage between two fixed surfaces such as pipe flanges.
Packing: prevents leakage between a casing and a rotating shaft or spindle.
Heat exchanger: transfers heat between two media without mixing them.
Turbocharger: supplies charged air so an engine can burn more fuel.