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          | Plate 1: | 
           Form of hand wheels and hand cranks, and valve identifications  | 
         
        
          |     "   2:  | 
          Symbols used | 
         
        
          |     "   3:  | 
          Color identification of pipe lines, conduits, and tubes | 
         
        
          |     "   4:  | 
          Abbreviations used | 
         
        
          |     "   5:  | 
          General arrangement of vessel  | 
         
        
          |     "   6:  | 
          Draining and trimming system | 
         
        
          |     "   7:  | 
          Regulating and torpedo compensating system  | 
         
        
          |     "   8:  | 
          Fuel oil venting, sounding and test piping (longitudinal section)  | 
         
        
          |     "   8a:  | 
          Fuel oil venting, sounding and test piping lcross section)  | 
         
        
          |     "   9:  | 
          Fuel oil filling, transfer, and delivery system  | 
         
        
          |     "   10:  | 
          Fuel oil compensating system (circulating water under pressure)  | 
         
        
          |     "   11:  | 
          High pressure air system  | 
         
        
          |     "   12:  | 
          Low pressure or service air system | 
         
        
          |     "   13:  | 
          Cooling-water system and anti-corrosion oil-circulating system; for ships with Krupp engines | 
         
         
        
          |     "   13A:  | 
          Cooling-water system and anti-corrosion oil-circulating system; for boats with MAN engines  | 
         
         
        
          |     "   13B:  | 
          Cooling-water system and anti-corrosion oil-circulating system; for U93-U97  | 
         
         
        
          |     "   14:  | 
          (Left) Engine lubricating oil system, (Right) lubricating oil storage, sump and purifying system, for Krupp engines  | 
         
        
          |     "   14A:  | 
          (Left) Engine lubricating oil system, (Right) lubricating oil storage, sump and purifying system, for MAN engines  | 
         
        
          |     "   15:  | 
          Engine starting air and induction air (for Krupp engines)  | 
         
        
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          | Plate 15A:  | 
          Engine starting air and induction air (for MAN engines)  | 
         
        
          |     "   16:  | 
          Flooding, venting, low pressure exhaust gas and emergency blowing systems  | 
         
        
          |     "   17:  | 
          Blowing and emergency blowing systems for ballast, regulating and negative buoyancy tanks  | 
         
        
          |     "   18:  | 
          Compartment ventilating and supply systems (emergency ventilating)  | 
         
        
          |     "   19:  | 
          Ventilating diagrams for surface, submerged, running and charging conditions  | 
         
        
          |     "   20:  | 
          Oxygen system  | 
         
        
          |     "   21:  | 
          Fresh water, wash water, waste and sanitary systems  | 
         
        
          |     "   22:  | 
          (Left)  Evaporating and distilling system;  (Right)  voice tube system  | 
         
        
          |     "   23: | 
          Hydraulic system for operating periscopes | 
         
        
          |     "   24:  | 
          Steam heating system  | 
         
        
          |     "   25:  | 
          Torpedo tube firing, venting, flooding and drainage systems  | 
         
        
          |     "   26:  | 
          Lime-water (acid neutralizing) system (for battery compartments)  | 
         
        
          |     "   27:  | 
          Arrangement of compartments and tanks, and tank capacities  | 
         
        
          |     "   28:  | 
          Flooding and venting system for ballast and buoyancy tanks  | 
         
        
          |     "   29:  | 
          Air starting gear for Krupp engines  | 
         
        
          |     "   29A:  | 
          Air starting gear for MAN engines  | 
         
        
          |     "   30:  | 
          Reversing gear for Krupp engines | 
         
        
          |     "   30A:  | 
          Reversing gear for MAN engines  | 
         
        
          |     "   31:  | 
          Cross-sectional arrangements | 
         
        
          |     "   32:  | 
          Specifications for hose and connections for piping systems  | 
         
        
          |     "   33:  | 
          Pumping plan | 
         
        
          |     "   34 | 
          Vibration and noise absorbing mountings, starboard and port | 
         
        
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