![]() ![]() Your boat will require at least one exhaust duct installed. They require at least two ventilator ducts to function. Natural ventilation systems are not powered. You can still use one of two ventilator systems, depending on your kind of boat. Powered Ventilation Systems vs Natural Ventilation Systems It will keep those enclosed areas dry and free from dangerous fumes. Good air circulation with bilge blowers or other powered blowers is key. Mildew is notorious for building up on anything from wood to plastic to fiberglass. Plus it can effectively destroy your boat’s hull over time. That’s a secondary health risk above the fire issue from fuel fumes. Over time, this can lead to mold and mildew in enclosed spaces. Humidity and moisture are notorious in the bilge area. There’s also a second reason to ventilate your boat. Fumes from fuel are highly explosive and flammable. Without something like a blower fan or a dorade vent, that can become dangerous. Most boats, even larger boats, can allow gasoline fumes to build up. ![]() Your ventilation system exists to disperse gasoline fumes. They must legally use powered ventilation systems.īut what’s the reason? What’s that fresh air for? Simple. That means any boat with an enclosed engine or permanent fuel tanks up to today. Natural ventilation was no longer legal for such engine configurations. So as of 1982, if a boat had installed fuel tanks or an enclosed engine, powered was the rule. Now it would distinguish between natural ventilation and powered ventilation. This was required by law, and still is.įast forward to 1982 and the law was changed again. Any boat powered by gasoline would be required to have adequate ventilation. In fact, it dates all the way back to April 25, 1940. Why Fresh Air is Important for Cabin Ventilationīoat ventilation is nothing new. Let’s take a look at boat ventilation and what you need to stay safe. Because of that, you’re going to want to know exactly how and why your boat needs to be ventilated. It’s also something that must follow specific, legal guidelines as well. How you ventilate your boat is of vital importance. But on a boat, it can literally be a life or death issue. Ventilation is rarely something most of us give a second thought to. ![]()
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