The hazardous goods seat on a ship's choice, between each kind of hazardous goods, hazardous goods' and isolates with other cargo between disposition, must strictly according to International Marine transportation Hazardous goods Rule (i.e. IMDG Code) stipulation discrete processing, in the ordinary circumstances, the hazardous goods seat on a ship's choice should follow the following principle: a, all hazardous goods, should be far away from the heat source, the fire hazard, the power source as far as possible, including engine room, chimney, steam conduit and so on, specially flammable, explosive hazardous goods, should be far away from the above quarter. b, the hazardous goods mostly have the varying degree toxicity, should be far away from between as far as possible the crew quarters, the operational site, the kitchen, food the air-conditioning system and so on, particularly the narcotics and easy to send out, flammable, explosive or the noxious gas hazardous goods, should be far away from the above place. c, the hazardous goods should arrange in the most breech loading, to unload first and to be advantageous as far as possible to the supervision and the safe processing seat on a ship, for example No.1 cargo hold, nearby NO.2 cargo hold tweendecks peristome, if the nature does not conflict, but should also concentrate as far as possible, reduces the supervision scope and is advantageous with other cargo disposition, specially the exploder, above do not load other cargos. 恩