[单选题]___means navigational and meteorological warnings, meteorological forecasts and other urgent safety related messages broadcast to ships.
[单选题]___the INMARSAT system ,a ship can sent a distress message and know with certainty it will be received by others.
[单选题]If a fitted two-way VHF radiotelephone apparatus is fitted in the lifeboat,it shall be install in a cabin ____to accommodate both the equipment and person using it .
[单选题]Every ship shall be carry personnel qualified for____to the satisfaction of the administration.
[单选题]After studying the SOLAS convention and other regulations for navigation, you should have known the Chapter IV of SOLAS is regarding the ____
[问答题]When activated in a distress situation,a SART responds to radar interrogation by transmitting a swept frequency signal which generates as a line of 12 blips code on a radar screen outward from the SART’s position along its line of bearing.Displayed on the PPI,the spacing between each pair of dots will be 0.6 nautical miles.In order to distinguish the SART from other responses it is preferable to use a radar scale between 6 and 12 nm,this will assist in differentiating between the SART and other responses.As the search craft approaches to within about 1 nautical mile of the SART,the blip dots will change into wide arcs,and even become complete circles as the SART is closed and becomes continally triggered.