ship’s  berthing  and  locker  bill.  Divisions  are  assigned responsibilities  for  the  cleanliness  of  the  exterior  and interior of the ship’s hull, hull fittings, machinery, and equipment   according   to   the   ship’s   cleaning   and maintenance bill. The berthing and locker bill and the cleaning and maintenance bill are administrative bills of the Standard  Organization  and  Regulations  of  the  U.S. Navy, OPNAVINST 3120.32B. We’ll explain the role of the  engineering  department  divisions  on  the  following pages. Auxiliaries Division The   A   division   officer   heads   the   auxiliaries division.   Personnel   of   the   Engineman   (EN), Machinist’s Mate (MM), and Machinery Repairman (MR) ratings are assigned to the division. The A division is responsible for the cleanliness and maintenance of such spaces as the air-conditioning machinery  room,  air  compressor  room,  anchor  windlass room,  emergency  generator  room,  evaporator  room,  fire pump room, fan rooms, internal combustion engine shop,  refrigeration  machinery  room,  steering  gear room,  machine  shop,  auxiliary  machinery  room,  aircraft elevator machinery room, and boat winch machinery room. The  A  division  is  generally  responsible  for  the preventive and corrective maintenance of winches and cranes,  emergency  generators,  air-conditioning  and refrigeration  equipment  and  systems,  laundry  and dry-cleaning  machinery,  galley  machinery,  steering engines,  anchor  windlasses,  air  compressors  and compressed air systems, emergency fire pumps, boat engines  and  boat  propulsion  machinery,  internal combustion  engines  not  specifically  assigned  to  another department,  distilling  plant  machinery  and  equipment, auxiliary   boilers,   hydraulic   systems,   elevator machinery, ventilating equipment, and heating systems. Boilers  Division The B division officer heads the boilers division. Personnel  of  the  Boiler  Technician  (BT)  rating  are usually  assigned  to  the  division. The B division is responsible for the cleanliness and maintenance of such spaces as the firerooms, forced draft  blower  room,  fuel  oil  storage  tanks,  fireroom uptake spaces, and the fuel oil test laboratory. The B division  is  generally  assigned  the  preventive  and corrective  maintenance  of  the  boilers,  fireroom auxiliaries,  forced  draft  blowers,  fuel  and  water  testing apparatus, the equipment for fueling at sea, and fuel oil piping  and  pipe  fittings. Electrical Division The E division officer heads the electrical division. Personnel  of  the  Electrician’s  Mate  (EM)  and  Interior Communications  (IC)  ratings  are  assigned  to  the division. The E division is responsible for the cleanliness and maintenance of such spaces as the electrical shop, gyro room, IC room, IC shop, storage battery room, battery locker,  underwater  log  compartment,  winch  controller rooms, wiring trunks, and switchboard rooms. The E division  is  generally  assigned  the  preventive  and corrective  maintenance  of  all  electrical  motors, generators, and controllers not specifically assigned to another  department.  They  are  also  assigned  degaussing systems,  electrical  distribution  systems  including cabling  and  switching  and  protective  equipment, gyrocompasses  and  related  equipment  such  as  the  dead reckoning analyzer and dead reckoning tracer, battery charging equipment, underwater log systems, small boat  electrical  systems,  automatic  and  sound-powered telephone  systems,  lighting  systems,  closed-circuit television  systems,  IC  systems  including  ship  control and indicating systems, portable announcing systems, the  magnesian  compass  system,  and  portable  electric tools. Main Engines Division The  M  division  officer  heads  the  main  engines division. Personnel assigned to this division are MM for steam engines, EN for diesel engines, or Gas Turbine Systems Technicians (GS) for gas turbine engines. The M division is responsible for the cleanliness and maintenance of such spaces as the engineering department  office,  engine  room  uptake  spaces, freshwater and feedwater tanks, engineering storeroom, and shaft alleys. The M division is generally assigned the preventive and corrective maintenance of the main engines  and  propulsion  maintenance  including  the shafting,   engine   room   auxiliaries,   ship’s   service generator drive units, and engine room piping systems. Repair Division The R division officer heads the repair division. Personnel of the Hull Technician (HT) and Damage Controlman  (DC)  ratings  are  assigned  to  the  division. 1-12