Many  ships,  such  as  carriers,  tankers,  and tugs,  have  independent  diesel-driven  fire  pumps. If ship’s pumps and firemain are damaged, these diesel-driven  pumps  can  be  used  to  furnish  large amounts of water for firefighting purposes. LIGHTING  SYSTEM On ships using a.c. generators, the ship’s serv- ice and emergency lighting systems are energized from  the  generator  and  distribution  switchboards through   a   bank   of   transformers.   These transformers supply power to the lighting system through the lighting distribution panels. Lighting  throughout  the  machinery  spaces  is supplied  from  the  normal  switchboard  for  the compartments involved, with some lights in each space supplied from the alternate switchboard. A few  lights  in  each  compartment  are  supplied through automatic bus transfer equipment from circuits  originating  at  the  emergency  switch- boards. A few lights in each compartment are sup- plied through automatic bus transfer equipment from  circuits  originating  at  the  emergency switchboards. Automatic type hand lanterns are provided to supply an instantaneous source of illumination, in the event of complete failure of the ship’s serv- ice and emergency lighting systems. These relay- operated  hand  lanterns  are  installed  at  vital stations.  In  addition  to  these,  nonautomatic  type hand  lanterns  are  also  installed  at  these  stations. An EN1 or ENC in charge of an engineering space has the supervisory responsibility to see that the  hand  lanterns,  especially  the  automatic  type, are not removed except for actual intended use, and that hand lanterns are available for use at all times. Although the Electrician’s Mates have the responsibility for the maintenance of the hand battle lanterns, it is the duty of the petty officer in charge of the space to see that personnel do not   remove   the   lanterns   or   use   them   for unauthorized purposes. The EN1 or ENC should also ensure that per- sonnel have an adequate number or flashlights available  for  use  should  all  the  lights  in  an engineering space go out. ELECTRICAL POWER PANELS AND TERMINALS Power panels are supplied with two or three sources   of   power—normal,   alternate,   and emergency. These panels are equipped with cir- cuit breakers or switches which permit the transfer from  one  source  to  another  in  the  event  of  a casualty. Regular  electrical  outlets  are  installed throughout the engineering spaces for use with small  portable  tools;  multipurpose  outlets  are  in- stalled in selected locations for use with portable submersible pumps and portable welding sets. These outlets are located so that it is possible to use two portable submersible pumps in any water- tight  compartment.  Portable  triple  outlet  ex- tension   cables   are   provided   to   permit   the concentration of all submersible pumps in one area. An adapter provided with these extension cables  permits  connection  of  the  submersible pumps to the casualty power terminals. All this equipment   is   stowed   in   the   damage   control lockers. Engineroom personnel should be trained in the emergency  use  and  operation  of  submersible pumps as well as other damage control equipment. They should know the location of both normal and emergency power outlets in their spaces, and should  understand  the  different  methods  used  to supply electrical power for operating submers- ible pumps in the engineroom. Engineroom personnel should also be familiar with sources of electrical power provided to the different power panels in an engineroom. Dur- ing engineering casualty control drills and during actual emergencies, the Enginemen should be able to shift from one source of electrical supply to another. BATTLE   CASUALTIES As an EN1 or ENC you will be responsible for handling battle casualties, you will have to know   the   location   of   isolating   and   cross- connecting valves, and recognize which of the valves are remotely controlled. As a general rule, personnel safety will be your first consideration in handling casualties. Effective  control  of  battle  casualties  depends on a good knowledge of the principal engineer- ing piping systems and related equipment. This information may be found in the ship’s Engineer- ing  Casualty  Control  Manual,  in  the  Damage Control  Book,  in  the  plans  of  the  principle Chapter  9—ENGINEERING  CASUALTY  CONTROL 9-13