D semester

The eductor is a pumping device without moving parts (e.g. piston etc.) which is .... by the high pressure of water flowing through it by the general service pump or the fire fighting pump. The high pressure of water creates a vacuum around the nozzle of the device, which causes the ... of bilge water. It right overboard and it is generally used in emergencies.

The bilge holding tank is a huge tank of about 50m3 where bilge water is pumped into, from the bilge well. It is divided into smaller compartments by vertical divisions which have holes. Dirt and waste partly down in the 1st compartment, while cleaner water passes through the holes into the next compartment and from there, through the separator, over- board. The residue of oil in the water that is pumped overboard must not 15ppp.