| 摘要 |
<p>A deck ventilator suitable for small vessels is formed as a low dome (12). Outside air may enter it through window (14) and then circulate around member (30), through orifice (22) and down duct (7) which pierces deck (4). Member (30) usually serves merely as a shield against spray, however if a surge of water enters compartment (18) the orifice (22) is closed by movement of member (30) which is slidably hinged to U-shaped rods (23). This closing movement results from the combination of the impact of the water on member (30) and the member's inherent buoyancy.</p> |
