Folios 387-404: CB number 01469 O.X.O, Copy number 339, UB.124 Interrogation of Survivors,...

Folios 387-404: CB number 01469 O.X.O, Copy number 339, UB.124 Interrogation of Survivors, August 1918.

Folio 388: Cover sheet, UB.124.

Folio 389: table of contents.

Folio 390: Initial Proceedings of UB.124 (sunk on 20 July 1918). On 6 July 1918 left Heligoland with UB.83, UB.90, destroyer T.137 and six minesweepers. After mines encountered and sighing two hostile destroyers, returned to Brunsbuttel to pass through the Kaiser Wilhelm Canal to Kiel.

Folios 390-391: First and Last Cruise of UB.124. On 9 July left Kiel and proceeded via the Little Belt and the Skaw and headed for Peterhead. On 20 July off Tory Island torpedoed and sank S.S. Justicia but lost trim, was depth charged and came to rest on bottom. On re-surfacing lost trim and was depth charged. Ordered to abandon ship, UB.124 sank. After 20 minutes the survivors were rescued.

Folios 391-392: Survivors of UB.124. The survivors were generally reluctant to answer when interrogated.

Folios 392-394: Cruises of other Submarines. Information obtained from survivors who had served in U.21, U.46, U.49, U.54, U.90, U.91, UB.70 and UC.59.

Folio 394: Recent Movements of Submarines. In Germany and in the Flanders Flotilla.

Folios 395-396: Submarine Flotillas and Personnel. Details of the submarines and their commanding officers as of June 1918: 1st Submarine Flotilla, Brunsbuttel, 2nd Submarine Flotilla, Heligoland and Wilhelmshaven, 3rd Submarine Flotilla, Wilhelmshaven, 4th Submarine Flotilla, Emden, 'Cruiser' Submarine Flotilla, Kiel, 'Flanders' Submarine Flotillas, Mediterranean Submarine Flotilla. Also information on the Submarine School, the Submarine Acceptance Commission and some changes in commanding officers.

Folios 396-397: Submarines Lost or Damaged. Losses U.88, UB.31 and UB.70. Salvaged U.52, UB.84, UB.106 and UB.114. Damaged U.54, U.92, U.113 and UB.123.

Folio 397: Submarine Construction. There has been some abatement of submarine activities but great things are expected in October when numerous new submarines will be ready. Information as to builders of those being constructed Folios 397-398: New Cruiser Submarines. Details of U.140 at Kiel. Diagram: Conning-Tower of Cruiser Submarine.

Folio 398: New Minelayers of U.117 Class. Technical details.

Folios 398-399: Torpedo Firing in Submarine School, Kiel. Commanding officers' training includes attacking a defended convoy. They have to make a successful attack without being sighted, firing 30 to 40 torpedoes.

Folio 399: Method of Attacking Convoys. The course and speed of a convoy is obtained, the submarine endeavours to get ahead and attack from between the convoy columns.

Folio 399: Passage of Fair Isle Channel. To avoid observation from kite balloons, submarines submerge to go through the channel.

Folio 399: Notes on Procedure of Submarines. For communicating with Germany when off the coast of Ireland, it is always necessary to use the mast aerial.

Folio 400: Mining Information. Minesweeping Procedure, Sweep Wire, Bow Defence, Barrage Breakers, British Mines and German Mines. Plate I: Minesweeping Methods (folio 400).

Folios 400-403: Gunnery Information. Details of the rangefinder training course and stereoscopic rangefinders. Plate II: Zeiss Stereoscopic Rangefinder (folio 402).

Folio 403: Damage Sustained by German Battleships in Battle of Jutland. Hit on Oldenburg and two hits on Rheinland.

Folio 404: Appendix: nominal list of crew with ranks of UB.124.