TM 5-4220-231-14&P b.    Operational Capabilities     and    Features. The   SDASS    will support     up  to  three    surface-supplied divers   for  one diving    day     (8   to    12    hours) during construction, salvage, recovery, repair, and     emergency diving missions. It   is capable of   providing a  secondary life  support air  source for   a   recompression chamber by   pressurizing it to    165   fsw and    maintaining adequate ventilation for   at   least one     hour. The    SDASS will   provide the    topside supervisor and operator with   constant and    accurate depth monitoring to   within    +0.25 percent of   full  gage scale to   a   maximum of 250    fsw   for   each     diver    supported. The    SDASS can    be   prepared for   use    within   60    minutes and    returned to  stowage configuration within    30    minutes. 1-8. Location and Description of    Major    Components. 3 3 1 2 IL 5 5 4 5 5 Figure 1-1. Special Diver    Air   Support System DIVER   AIR   CONTROL CONSOLE (DACC)     (1). Receives HP   air   from   the    DASS    or   the    LP   compressor. Controls the    diver    air   supply to   the    volume tank     assembly. Provides depth monitoring for   three divers. VOLUME    TANK   ASSEMBLY (VTA)   (2). Stores LP   air,   supplied from   the    DACC,    providing breathing air   for   up   to three divers. DIVER   AIR  STORAGE SYSTEM (DASS) (3).     Provides HP   air   storage. Consists of two   groups of  four   racks, each containing two   5,000 psig    HP   Kevlar    flasks (total    of   16  flasks). CHAMBER REDUCING STATION (CRS) (4). Provides the    recompression chamber with    LP  air   from   the    DASS     or LP  compressors. DECK   AND    INTERCONNECTING HOSES (5). HP   deck hoses are     used to   connect the    HP   compressor to    the DASS,    and    the    DASS     to   the    DACC    and    CRS. HP   interconnecting hoses are    also     used between flask    racks. LP deck     hoses are    used     to  connect the    LP   compressors to  the    DACC    and    CRS, and    the    DACC    to  the    VTA. LP  deck hoses are    also     used     to   connect the    CRS     to   the    recompression chamber. 1-6