How Does It Work?Ī ventilation system has two ducts or vents at the minimum: an intake and an exhaust, both of which are connected to the bilge or any space that needs to be ventilated. Such a build-up could make way for starting a fire or an explosion. These fumes can build up inside the bilge, engine compartment, and other spaces inside the vessel. This growth can happen in the span of a few days and can even cause damage to the boat and your equipment.Īnother important use for ventilation is to expel dangerous fumes that come from fuel. This is when mold and mildew start appearing inside the vessel. Over time, moisture builds up instead of being removed. Some people close off their vessel compartments to prevent moisture from entering, but this results in the opposite effect, since the difference in humidity inside and outside the boat are not balanced. The first is to control moisture and humidity levels, as mentioned earlier. There are two main uses for a ventilation system on a boat. Only active types can serve as marine engine ventilation. The passive type of ventilation system is more affordable but cannot do everything that powered types can do. Passive ventilation is also called natural ventilation, while active ventilation is also known as powered. Perhaps more importantly, this system is a US Coast Guard requirement for boats with an engine powered by gasoline, and it can save your life.Īctive and passive ventilation systems are available, but only the former is suitable for the USCG requirement. This can be due to the lack of airflow, and the same thing can happen on a vessel.Ī ventilation system allows air to flow into and out of the boat, addressing problems with humidity and gas fumes.īy having ventilation channels in and outside of the boat’s compartments, we allow air to circulate inside the craft. If you’ve been to an old storage room with no windows, you’ll likely find that the air is heavy and stuffy. Proper Ventilation Operation – How Long Should a Ventilation Blower Be Left Operating?.What to Know About Ventilation for Boats.
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