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发表于 2012-4-18 23:06
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来自: 中国河北廊坊
andylgang 发表于 2012-4-18 10:04
测深仪呢?
出于什么原因计程仪必须安装海水阀?盼解释,谢谢!
DNV要求:准确说不叫海水阀,是闸阀,计程仪和测深仪要求一样
Sensor(s) for speed log shall have means for ice protection or be fitted with gate valve
for sensor replacing at sea without need for dry docking。
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