Chief : the fog signal is not sounded . I supposed that the connection in the mast is not firmed.
雾号不响了,我怀疑是大桅处的连接部位接触不良。
船舶驾驶员实用英语口语
(3) Switch on and sound fog signals?
(3) 开机并发出雾信号?
英语百科
Foghorn
(重定向自Fog Signal)
A foghorn is a fog signal that uses sound to warn vehicles of navigational hazards, or boats of the presence of other vessels, in foggy conditions. The term is most often used in relation to marine transport. When visual navigation aids such as lighthouses are obscured, foghorns provide an audible warning of rock outcrops, shoals, headlands, or other dangers to shipping.
英英词典
fog signal n.
a loud low warning signal that can be heard by fogbound ships