Marine Mechanical System

Hi frnds, I am basically Electrical engineer,now I am working in a system(on a vessel),where we must know how all the mechanical systems work/functions,so that by understanding that system we really can visualise the importance of control switch/transmitter. so,please tell me each block/part and its function,highlighting the very specific parts. The systems like 1.Main engines(4500Kw) 2.Auxiliary engine(450Kw) 3.Seperators 4.Boiler 5.Sewage treatment plant 6.gearbox(hydraulic clutching and other pneumatic clutching) 7.Controllable pitch propeller 8.Cooling system 9.Hydraulic system 10.Pneumatic System 11.Bridge equipments and their functions 12.Firefighting system and 13.water mist system ....etc Since I am basically electrical I can understand better,if you have any specific important points to share,please share without hesitation. Hope you will send, Thanking you, Your frndly, Joganand