© by National Archives, Kew, U.K.
Chapter II German Navy Submarines, April 1918
| 
| 
| 
|
| 
| 
| 
|
| 
| 
| 
|
| 
| 
| 
|
| 
| 
| 
|
| 
| 
| 
|
| 
| 
| 
|
| 
| 
|
Chapter IV Submarine War 1914 and 1915
| 
| 
|
Chapter VII The Last Year in the Atlantic
| 
| 
|
| 
|
Chapter VIII Submarine War off the Atlantic Coast of the United States
| 
| 
|
Chapter IX Submarine War in the Mediterranean
|
Appendix
| 
| 
| 
|
| 
| 
| 
|