(f) Fitting of more than one whistle. If whistles are fitted at a distance apart of more than 100 metres, it shall be so arranged that they are not sounded simultaneously.
(g) Combined whistle systems. If due to the presence of obstructions the sound field of a single whistle or one of the whistles referred to in paragraph 1(f)[/url] above is likely to have a zone of greatly reduced signal level, it is recommended that a combined whistle system be fitted so as to overcome this reduction. For the purposes of the Rules a combined whistle system is to be regarded as a single whistle. The whistles of a combined system shall be located at a distance apart of not more than 100 metres and arranged to be sounded simultaneously. The frequency of any one whistle shall differ from those of the others by at least 10 Hz.
译文的译文者,将“whistle" 翻译成“号笛”,它可以是压缩空气驱动的(air-hone) 或电机驱动的 electric driven whistle/hone, 但都可称whistle.
在仔细读我的总结: 英文名称都叫Whistle,是避碰规则里面所要求的船舶必配的声音信号装置。
通常理解,气笛的动力源是压缩空气,经电磁阀控制,空气经弹簧笛末片吹出号声。
电动气笛,动力源是电,经遥控控制,马达驱动机器内的压缩机,制造的压缩空气经弹簧笛膜片,吹出号声。
配置要求,大于12米的船都要装whistle。装在船的最高位置。
至于由于,船舶结构或货物堆积原因,造成号声被阻挡,要装组合whistle,即船首一个,船尾部一个。装组合whistle的,相离大于一百米的组合whistle,不能同时响起(一次响一个嘛)。在听的位置,声压不得超越一百一十分呗。至于你常遇到的,组合号笛,船首一般电动气笛,雷达桅杆装气笛,但不是法规强制要求当安装组合号笛时,首部装电机驱动的气笛,尾部装压缩空气驱动的气笛(AIR-HORN) ,可以反过来?
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