相关题目
"()is the process by which the position of the vessel at any moment is found by applying the last well determined position to the run that has been made since，using for this purpose the ship＇s course and the distance being those indicated by log.
"() means course which a vessel makes good over ground, after allowing for the effect of currents, tidal streams, and leeway caused by wind and sea.
"Speed of a vessel required for the passage through a canal, fairway, etc, called () .
"When a wind blows round clockwise, called().
"Turning of a vessel upside down while on water is called()
"A vessel which has been destroyed or sunk or abandoned at sea is called () .
"If a buoy is not at the position charted, we say it is () .
"When the transmissions of a radio station , etc., have broken down, switched off or suspended, we will say it is ()
"Place on deck, in mess rooms, etc., assigned to crew and passengers, where they have to meet according to the muster list when the corresponding alarm is released or announcement made means().
"Which one is not a distress , urgency or safety communication procedure might marked by? ( )
