Emergency could be for real or just a drill. Emergency has codes on ships as on any other transportation means. On real cases, could be a fire, man overboard, flood or really bad weather, when all personnel gather to solve the situation using a proven system. Could be medical, as someone on the ship gets sick or even dies. In that case, the doctor and his team are called to fulfill their duties. A special party is used when, on bad weather some other ships are in trouble and they call for help. Could mean a lot of things, but in general, is just a drill, training people to respond in real emergency situations.
meaning of ship routins
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EMTis the abbreviation meaning emergency medical technician.
Emergency Escape Breathing Device
What is the meaning of nationality of the ship?
emergency generator is located in the above the waterline to mnimize danger of flooding
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An emergency rescue is a situation in which the victim must be removed from the area or the emergency removed from victim
panama lead in a ship
ship
An order to abandon ship.
It is the same on any ship "man overboard". Only yell it if someone really is overboard, since the cruise ship staff will respond as if it is an emergency.