GIVE DISTRESS SIGNALS FOR IDENTIFICATION.的意思是:发出遇险求救信号。
All of the following are distress signals under the Rules EXCEPT().
Under the International Code of Signals how are geographical locations such as New York City transmitted().
When a vessel signals her distress by means of a gun or other explosive signal,the firing should be at intervals of approximately().
The signals that will be used for emergency should be clearly ().
Distress flares and smoke signals for small passenger vessels().
When whistle signals are used for launching lifeboats,one short blast means().
Where will you find the requirements for the signals that must be sounded by a mobile offshore drilling unit that is being towed through an area of restricted visibility? ()
The service life of distress signals must be not more than().
Uncharted lights, fog signals and radar beacon transmissions may be()near the station.