CONFIDENTIAL REPORT 2G-21
S39
     
 
FORMER GERMAN SUBMARINE TYPE XXI
 
 
 
 
INSULATION AND LAGGING
 
     
 
SUMMARY
 
     
          The amount of insulation provided in this type of vessel is reduced from that in previous classes.  The amount and type of lagging remains unchanged.  
          The use of cork is confined to the refrigerator and cool room in this type of vessel.  Where installed the cork is covered by zinc sheets soldered at the joints.  
          The refrigerator insulation is computed on the following basis of heat transfer:  
  Deep freeze   - 10 heat units (WE) per sq. meter per hr.  
  Potato locker - 20   "      "                "     "     "       "    "  
          Both the above are rated for an ambient temperature of 95° Fahrenheit, with an interior temperature of -2°F.   
          Comments remain unchanged from those on the 9C report.  
     
     
     
     
 
July, 1946
 
 
 
 
PORTSMOUTH NAVAL SHIPYARD, PORTSMOUTH, N. H.
 
     
     
     
 
- 1 -
 
     
     

 


 

Click the icons to view the associated records

Return to the Design Studies page