Folios 142-158: CB number 01400 O.X.O, Copy number 290, UB.81 Interrogation of Survivors,...

Folios 142-158: CB number 01400 O.X.O, Copy number 290, UB.81 Interrogation of Survivors, December 1917. UB. 81, sunk on 2 December 1917.

Folio 143: Cover sheet, UB.81.

Folio 144: table of contents.

Folio 144: There were six survivors of whom two officers provided most of the information.

Folio 144-146: UB.81 proceeded from Zeebrugge on 28 November 1917 passing through Dover Barrage. Lost anchor and cable making depth keeping and steering difficult. While in Channel, attacked for convoys sinking S.S. Molesey. On 30 November following an explosion aft, water entered boat. While the stern was resting on the bottom the CO trimmed the boat to get the top of the bow tubes above water. Six of the crew escaped through these although others were reluctant to do so. Patrol Boat P.32 approached and while rescuing the survivors, bumped UB.81 causing it to sink. Plate 1: Track of UB.81, 28-30 Nov. 1917 (folio 145).

Folio 147: Crew list UB.81.

Folio 147-149: Details of UB.81, General Detail, Colour, Keel, Conning-Tower, Periscopes, Armament, Internal Arrangement, Hatches, Compasses, Steering Gear, Anchor Gear, Sound Signalling Apparatus, Jumping Wires, Wireless Telegraphy, Air Service, Accommodation, Main Engines, Main Motors, Accumulators, Auxiliary Machinery, Lighting and Power Circuits, Depth Gauges and Searchlight.

Folio 149: Submarine in the Flanders Flotilla: UB.10, UB.12, UB.16, UB.17, UB.18, UB.24, UB.27, UB.30, UB.31, UB.33, UB.35, UB.38, UB.40, UB.54, UB.55, UB.56, UB.57, UB.58, UB.59, UB.80, UC.4, UC.17, UC.47, UC.48, UC.50, UC.51, UC.64, UC.69, UC.70, UC.71, UC.75 and UC.77.

Folios 149-150: List of shipyards building improved UB type.

Folio 150: Submarine Losses UB.20, UB.32, UB.39, UB.41, UC.1, UC.6, UC.14, UC.16, UC.18, UC.21, UC.62, UC.70 and UC.72.

Folios 150-151: Submarine Officers. Korvetten-Kapitan (Commander) Bartenbach, the Flotilla Commander, is exceedingly popular.

Folios 151-157: Appendix I: Translation of Diary taken from Steuermann (Navigating Warrant Officer) Bathke Plate 2: Chart Showing the Areas which Diving and Torpedo Practices are carried out in the Baltic (folio 152). Appendix II: Speed Table. Appendix III: Note Found in Notebook taken from Steuermann (Navigating Warrant Officer) Bathke. Appendix IV: Miscellaneous notes Found in Notebook taken from Steuermann (Navigating Warrant Officer) Bathke. Appendix V: Folio 158: Translation of a letter written by Able Seaman Otto Kirschbaum dated London 7 December 1917 to the Kirchner family.

Folios 158-159: Appendix VI: Translation of a letter written by Able Seaman K. D. Blunck dated 13 December 1917 to Auguste Blunck.