“A” class divisions – Bulkheads and decks constructed of steel or other equivalent material, suitably stiffened, and designed to withstand and prevent the passage of smoke and flame for the duration of the one-hour standard fire test.

A device which can detect a fire, and provide a signal to an alarm circuit. Fire detectors can be operated by smoke, flames, and heat, or any combination of these factors.

A plan providing crucial information for rapid and efficient action of the vessel’s crew during a fire.

Fire is the result of a combination of three factors; a substance that burns, an ignition source, and a supply of oxygen.

The method of analysis of ship structures developed in 1960s. This allows to apply loads in the most realistic way and to analyse stresses with sufficient accuracy even in very complex structures.

Hydraulic cylinders mounted outside the hatch covers used for opening and closing them.

A small part of a large continuous structure which is investigated with regards to its loading. Displacements, stresses and strains can be determined at the nodes where the various elements meet and the whole structure is thus analysed.

Filtration can be defined as the process of collecting solid particles from a fluid by passing the fluid through a filter medium where the particles are retained.

A vapour-air or gas-air mixture that is capable of being ignited by a source that is at or above the ignition temperature of the vapour-air or gas-air mixture.

A filter with an automatic cleaning function. Back flashing is carried out by reversing the fuel flow to remove contaminants from the surface of the filter.

Electrical equipment is defined and certified as explosion-proof when it is enclosed in a case, which is capable of withstanding within it the explosion of a hydrocarbon gas/air mixture, or other specified flammable gas mixture

A device used for mechanical separation of solid contaminants from a liquid or a gas. Fine mesh filters are used to remove the smallest particles of dirt from oil before the oil enters the finely machined engine parts.

A relief valve fitted to the engine crankcase doors as a safeguard against explosions. It relieves excess pressure, stop flames being emitted and prevent from the entry of air into the crankcase.

A trunk extending above a space which is used for stowage of liquid cargo. The surface of the liquid cargo is kept sufficiently high in the trunk to permit expansion without risk of ...

The valve through which exhaust gases leave the engine. The exhaust valve consists of a valve housing and a spindle.

The gas which leaves a system after energy exchange or conversion process, e.g. combustion gases from a diesel engine, a boiler, a gas turbine or an incinerator.

A turbine wheel driven by exhaust gases from the engine rigidly coupled to a centrifugal air compressor.

Nitrogen oxides (NOx) emission reduction technique used in a reciprocating internal combustion engine, which involves diluting the intake air with recirculated exhaust gases.

The thickness of the paint or paint system.

Exhaust gas emissions increasingly become a more stringent topic of public interest in the context of merchant shipping industry.