accurate,  and  rapid  communications  should  take place between all damage control parties, fire-fighting parties, or similar groups so that overall coordination of  effort  and  direction  can  be  accomplished.  The primary damage control battle organization repair parties and teams are shown in figure 7-2. The   primary   duty   of   the   damage   control organization is to control damage in order to keep the ship fighting. Damage control objectives are attained by taking the necessary action to do the following: 1.   Preserve stability 2.   Preserve watertight integrity (buoyancy) 3.   Control list and trim 4.   Maintain effective segregation of vital systems 5.   Prevent,   isolate,   combat,   extinguish,   and remove the effects of fire 6.   Detect,  confine,  and  remove  the  effects  of nuclear, biological, and/or chemical attack 7.   Assist in the care of injured personnel 8.   Make   rapid   repairs   to   structures   and equipment Ships designate one of the repair parties to act as SECONDARY DCC. The repair party designated as secondary   DCC   maintains   status   boards   and communications logs identical to those maintained by DCC; it also directs control of damage in the event DCC is unable to perform its function. FUNCTIONS OF DAMAGE CONTROL CENTRAL Damage control central (DCC) is the hub of the ship’s damage control efforts. It is organized to coordinate control of all damage the ship may suffer in  battle,  and  it  keeps  the  commanding  officer advised of the capabilities of the ship after each casualty.  It  trains  repair  parties  to  operate  and control damage as independent units. DCC personnel check all damage reports and the corrective action being taken. DCC issues directions when  repairs  are  not  progressing  satisfactorily, damage is beyond the capabilities of the personnel involved, advice is requested, or corrective action in progress is incorrect. DCC maintains status boards showing struc-tural damage, location of flooding boundaries, condition of propulsion, condition of electrical and casualty power circuits, and corrective actions taken. REPAIR PARTIES AND TEAMS Each ship will have at least one repair party. Some ships have as many as eight repair parties. In addition, larger ships may have an ordnance disposal team, a crash and salvage team, or an aviation fuel repair team. Each repair party will have an officer or a senior petty officer in charge. Composition of repair parties   depends   on   the   number   of   personnel available, type of ship, and area of responsibility. A repair party organization chart is shown in figure 7- 3.  All  repair  parties  should  have  the  following capabilities: Making   repairs   to   electrical   and   sound- powered telephone circuits. FIRE FIGHTING DAMAGE NO.    GO    EVALUATION         FLOOD AND   CONTROL                         NBC DEFENSE                         MISC ASSIG     REMARKS CLO     AND COMM       A      B         C     SMOKE CONTROL     REPAIR NAME   Figure 7-3.—Repair party organization chart. 7-5