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Fig 4-3 – [[File:EngineVentilationShaft.jpg|thumb|left|260px|Engine ventilation shaft extending to the sole of the engine room may prevent water intake in a capsize]]
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= Hull Openings & Closures =
Water and fuel intakes should be at least 4-in off the deck to prevent ingress of dirt. Openings for the engine room ventilation should be at least 36-in off the deck. (Air intakes on the side of the hull are susceptible to letting water in.) Extend the intakes down close to the engine room floor. In the event of capsizing, this will keep the inside opening above the waterline so that water doesn’t siphon in. The air intake should have a shutter to cut off air in case of an engine room fire. Fit all vents, dorades and other openings with metal rodent screens.
== Doors ==
== References ==
[[Category:HullFittingsHullGeneral]]