S E C R E T
 
   
  PLAN 21 - TRINK - WASCH - und SCHMUTWASSERANLAGE  
                     Fresh water, Wash water, Waste, and Sanitary systems.  
     
 
a Hull valve . . . for example, risers on hot sea water main.
   
b Control cock, hand fresh water pump.
   
b1 Control valve, sea water spray.
   
b2 Control valve, fresh water.
   
b3 Selector cock, fresh water.
   
b4 Circulation selector cock, fresh water.
   
c Selector cock, hand wash water pump.
   
d Connection, fresh water tank 3.
   
d1 Manifold valve, drain line, aft.
   
d2 Filling connection, wash water tank.
   
d3 Valve, hot sea water spray connection.
   
d4 Emergency drain or bilge connection.
   
e Control valve, fresh water.
   
e1 Filtered fresh (drinking) water.
   
e2 Fresh water to galley stove.
   
g Hot sea water.
   
g1 Cold sea water.
   
h Cold sea water.
   
k Fresh water tank drain.
   
k1 Wash water drain, torpedo compensating tank 1.
 
     
 
S E C R E T