Forced ventilation for Machinery space:

Cargo hatch Mechanical ventilation:

Mechanical ventilation is achieved by using fans to circulate air through the hold. A mechanical ventilation system may have fans that are protected by covers.

Cargo hatch Natural ventilation:

Natural ventilation is achieved by opening the ventilator doors/ covers to allow the air to flow naturally. A natural ventilation system may have doors/ covers that are closed with gaskets.

Why Hold Ventilation is Considered Necessary:

The primary purpose of hold ventilation is to minimize damage to the cargo and ensure the safety of the crew and vessel.

• Minimizing the Formation of Sweat (Dew Point Control):
• Removing Hazardous Gases Emitted by Cargo:
• Preventing Excessive Heating of Cargo:
• Removing Taint:
• Preventing the Hold from Becoming an Enclosed Space:
• Preventing the Hold from Becoming a Vacuum Chamber:
• Providing a Favorable Atmosphere for Crew Working in the Hold: