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    inboard gasoline boats built after july 31st, 1981 must have what type of ventilation system?

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    Inboard gasoline boats built after July 31 1981 must have what type of ventilation system?

    Mechanical

    Boats and Watercraft

    Inboard gasoline boats built after July 31 1981 must have what type of ventilation system?

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    Q: Inboard gasoline boats built after July 31 1981 must have what type of ventilation system?

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    Inboard gasoline boats build after July 31st 1980 must have what type of ventilation system?

    Mechanical Ventilation System

    Inboard gasoline boats built after 1981 must have what ventilation?

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    Inboard gasoline boats built after july 31st 1980?

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    Inboard gasoline boats built after July 31st, 1980 must have what type of ventilation system?

    Inboard boats after July 31st 1980 have what type of ventilation?

    They have mechanical ventilation.

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    Source : www.answers.com

    Required Equipment : BoatUS Foundation

    The BoatUS Foundation provides this study guide to not only help with passing our free online boating safety course, but to provide a knowledge base for anyone wanting to learn about boating.

    Required Equipment

    PFDs, Flares Fire Extinguishers, Sound Devices and Lights

    To legally operate your vessel, both the Coast Guard and the states require you to carry certain equipment aboard your boat. These requirements are generally based upon the length of your boat, but a recent trend has been to have requirements based upon the time of year that you operate your vessel, or how far from shore you might operate your vessel. For example, boats 16 feet in length and over must have the at least:

    One personal flotation device (in good condition) for each person on board, plus a throw-able cushion or ring is required. You must have the PFDs out of the plastic and in a READILY accessible location. The throw-able should be close by the steering station. For more information on PFD's, click here.Three current-dated, hand-held, approved flares are minimum equipment to serve for day and night distress signals, both inshore and offshore. For more information on Visual Distress Signals, click here.The correct number of approved fire extinguishers, readily available for use is based on the size of your vessel. For more information on fire extinguishers, click here.A sound making device. For more information on sounds, click here.Working running lights. For more information on lights, click here.

    Ventillation Systems

    If you have enclosed areas on your boat, a ventilation system can do many things for you. If you have any gasoline powered engines aboard a ventilation system is a legal requirement. Good ventilation can do many things for you--help prevent mildew and bad odors, to saving your life by taking carbon monoxide and gasoline fumes out of the boat.

    Ventilation systems must have two parts--an air inlet, and a separate air outlet. Both the inlet and the outlet must have ducts--which are tubes or hoses that extend down into the boat. Ducting for the exhaust must be located in the lower third of the hull--but above any bilge water. Ducting should be routed away from any heat sources, should not be "kinked", and should be inspected regularly for cracks or debris. (Birds like to make nests in ducts.) Intakes are usually pointed forward, exhausts usually face aft.

    Boats must have a ventilation system that is adequate for the size space the system is used for. Larger boats with larger compartments must have more ventilation--the figure is 15 square inches of opening for each cubic foot of compartment. For most boats that works out to having two inlets and exhausts, with each vent having ducting from 3 inch diameter hose for smaller boats to 5 inch hose for larger boats.

    Natural Ventilation

    A natural, or passive, ventilation system consists of vents, cowls and other permanent openings in the boat that are designed to let air enter or exit using wind power or the boats' motion to move the air.

    This type of system is rather ineffective at clearing fumes when the boat is not in motion, so it used primarily for living spaces and tank/bilge areas. It can be used in engine compartments, but only in conjunction with powered blowers.

    Power Blowers / Vents

    A bilge blower is important not only because it's required, but because your life may depend on it. The USCG stipulates the use of a mechanical ventilation system for all non-open boats built after July 31, 1981 that run on gasoline.

    Even if your boat is older, it still must conform to USCG minimum ventilation levels, and may require a bilge blower to satisfy those guidelines.

    Bilge Blowers are specifically designed to clear gasoline fumes from closed compartments. They are ignition protected to prevent sparks, and are built to resist overheating and corrosion. The size blower you need is determined by the volume of your engine compartment. It is recommended that you use a blower at least 4 minutes before you ever start the engine, and especially after fueling.

    Backfire Flame Arrestor

    With some minor and technical exceptions, every inboard gasoline engine must be equipped with an acceptable means of backfire flame control-or "flame arrestor." This safety device prevents an exhaust backfire from causing an explosion. It operates by absorbing heat.

    Flame arrestors no longer require Coast Guard approval; the USCG now accepts flame arrestors complying with Underwriters Laboratories Standard 1111 or Society of Automotive Engineers J1928. When in use flame arrestors must be secured to the air intake of the carburetor with an airtight connection. Elements must be clean, and grids must be tight enough to prevent flames passing through. Cleaning with soap and water is the best way to maintain its effectiveness.

    Equipment Chart

    U.S. COAST GUARD MINIMUM EQUIPMENT REQUIREMENTS

    Equipment Boats less than 16 feet 16 to 26 feet 26 to 40 feet 40 to 65 feet

    Personal Flotation Devices Recreational boats must carry Coast Guard approved Personal Flotation Devices, in good and serviceable condition, and of the appropriate size for the intended user. Wearable PFDs must be readily accessible, not stowed in bags, locked or closed compartments or have other gear stowed on top of them. Throwable devices must be immediately available for use. There must be one Type I, II, III, or V PFD for each person on board or being towed on water skis, etc., PLUS one Type IV throwable device. Throwable, Type IV PFDs may no longer be substituted for wearable types on boats less than 16 feet. State laws on mandatory PFD wear may vary.

    Source : www.boatus.org

    Ventilation System Requirements

    The purpose of a ventilation system is to circulate fresh air on your boat. Ventilation will remove gas fumes from the hull and engine compartments, which will help prevent a...

    MODULE 02 - BOATING EQUIPMENT

    VENTILATION SYSTEM REQUIREMENTS

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    The purpose of a ventilation system is to circulate fresh air on your boat. Ventilation will remove gas fumes from the hull and engine compartments, which will help prevent a fire or explosion from occurring. Keep in mind that ventilation ducts must be positioned above the bilge line and in the lower portion of the compartment. This is because gases are heavy and tend to accumulate near the floor.

    Federal law requires any boat powered by gasoline and built after April 25th, 1940, to have a ventilation system in place.

    TYPES OF VENTILATION SYSTEMS

    Depending on the engine type and the year it was made, your boat will have either a natural or a powered ventilation system.

    NATURAL VENTILATION SYSTEM:

    A natural ventilation system has two ventilation ducts with cowls (hooded openings that scoop up the air from outside).

    POWERED VENTILATION SYSTEM:

    All boats built later than July 31st, 1982 with an inboard engine or with installed fuel tanks, must have a powered ventilation system (which consists of one or more exhaust blowers).

    MAINTAINING YOUR BOAT’S VENTILATION SYSTEM

    To maintain the ventilation system, regularly check that the vents are free of obstacles and take a close look at the device. Does any part of the system look worn or in need of being replaced? If you have a powered ventilation system, turn on the blower to check that the powered system is functioning properly.

    Note: The USCG recommends that a powered ventilation system be turned on four minutes before starting your boat’s engine and for at least four minutes after you’ve fueled your boat. This will clear out any fumes that may have settled.

    Source : www.thecampfirecollective.com

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