Nautical Term: Air casing
Definition of Air casing
Air casing refers to a circular plate or cominge that encircles the base of a ship’s stack or funnel. This plate is fitted at the upper deck, just below the umbrella-like structure known as the ventilator.
The air casing plays a crucial role in safeguarding the deck structure from the intense heat generated by the engine’s combustion process. Additionally, the air casing aids in the ventilation of the ship’s fireroom, enhancing the overall efficiency and performance of the vessel’s engine system.
For instance, let us consider a container ship named MSC Seawise. This vessel, measuring approximately 377 meters in length and 51 meters in breadth, is equipped with advanced engine technology, including a large and highly efficient main engine.
As the MSC Seawise generates enormous amounts of heat during its engine’s combustion process, it is essential that the ship’s deck structure and engine system are well protected from the intense heat.
To mitigate the risks of potential damage to the ship’s deck structure and engine system due to the extreme heat generated during the combustion process,
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