Folio 1: Volume title sheet.
Folio 2: Explanatory note.
Folio 3: Lists of records of Rear Admiral (S) dealing with operations 1914-1918.
Folio 4: Table of contents Commodore (S) war records Volumes I to XI.
Folios 5-6: Blank. Folios 7-9: Schedule of memoranda and reports.
Folios 10: List of additional reports.
Folios 11-14: Blank.
Folios 15-17: War order 001 for submarines E6 and E8 by Commodore (S) Roger Keyes, HMS Maidstone, 31 July 1914.
Folio 18: Corrigenda to Commodore (S)’s memorandum of 31 July 1914, war orders for E6 and E8, Commodore (S) Roger Keyes, HMS Maidstone, 1 August 1914.
Folios 19-20: Report of proceedings dated 15 August 1914 of Submarine E 6 employed in Heligoland Bight for 6-7 August 1914 by Lieutenant-Commander Cecil Ponsonby Talbot.
Folio 21: Report of proceedings dated 15 August 1914 of Submarine E 8 employed in Heligoland Bight for 6-7 August 1914, by Lieutenant-Commander Francis Herbert Heaveningham Goodhart.
Folios 22-24: War order 002 for submarines E4, E9, D3 and D5 by Commodore (S) Roger Keyes, HMS Maidstone at Harwich, 2 August 1914.
Folios 25-31: Memorandum 001 war orders for 1 and 3 Destroyer Flotillas by Commodore (T) Reginald Yorke Tyrwhitt, HMS Amethyst at Harwich, 4 August 1914 includes details of naval defence arrangements at Harwich, (folio 30).
Folios 32-36: Draft memorandum with comments regarding cruising with submarines in tow or otherwise in company by Rear Admiral Henry Campbell, HMS Bacchante at Sheerness, 4 August 1914.
Folios 37-40: Decision to attach a Submarine to each cruiser in Force C, Commodore (S) Roger Keyes, 4 August 1914.
Folios 41-42: Memorandum regarding cruising with submarines in tow or otherwise in company by Rear Admiral Henry Campbell, HMS Bacchante at Sheerness, 4 August 1914.
Folios 43-46: Copies of signals to Submarines E4, E9, D5, and HMS Bacchante, dated 5-6 August 1914. F
olio 47: Withdrawl of the Gabbard-Hinder patrol and successful completion of arrangements for the co-operation of submarines with Cruiser Force C, Commodore (S) Roger Keyes, 6 August 1914.
Folio 48: Correction to memorandum regarding cruising with submarines in tow or otherwise in company, dated 6 August 1914.
Folios 49-52: Memorandum 0016 Commodore (T)’s war orders Destroyer Sweep number 2 by Commodore (T) Reginald Yorke Tyrwhitt, HMS Amethyst, 9 August 1914.
Folio 53: Copy of an intercepted signal, dated 15 August 1914, concerning the movements of Rear Admiral Christian and his being in command of Cruiser Force C and Commodore (T) and Commodore (S).
Folios 54-68: Operations by submarines D2, D3, D5, D7, D8, E2, E3, E4, E5, E7, E9 for 8 to 14 August 1914 and war order 003 for submarines by Commodore (S) Roger Keyes, HMS Maidstone at Harwich, dated 8 August 1914.
Folios 69-80: Operations by submarines D5, E4, E9 for 18 to 23 August 1914. Report of proceedings dated 20-21 August 1914 for submarine E4(folios 76-77), submarine E9 (folio 78), and submarine D5 (folios 79-80).
Folios 81-94: Operations by submarines D2, D3, E5, E7, 15 to 18 August 1914 and war order 004 for submarines by Commodore (S) Roger Keyes, HMS Maidstone at Harwich, dated 14 August 1914. Report of proceedings dated 15 – 18 August for submarine E5 and E7 (folios 85-90), D2 for 16 -17 August 1914 (folios 91-93), D3 for 16-17 August 1914 (folio 94).
Folios 95-97: Operations by submarines D7, E2, E3 and war order 005 for submarines by Commodore (S) Roger Keyes, HMS Lurcher at sea, dated 20 August 1914.
Folios 98-99: Operations by submarines D2, D3, D7, E3 and war order 006 for submarines by Commodore (S) Roger Keyes, HMS Lurcher at sea, dated 24 August 1914.
Folios 100-148: Operations by submarines D2, D8, E4, E5, E6, E7, E8, E9 at Heligoland Bight on 28 August 1914 and war order 007 for submarines by Commodore (S) Roger Keyes, HMS Lurcher at sea, dated 26 August 1914. Report dated 29 August 1914 by Commodore (S) Roger Keyes regarding the Battle of Heligoland Bight (folios 110-114). Report of operations of submarine D2 off Western Ems on 28 August 1914 by Lieutenant-Commander Arthur George Jameson (folios 119-120). Report of proceedings of submarine D8 on 28 August 1914 by Lieutenant-Commander Theodore Stuart Brodie (folio 121). Report of proceedings of submarine E4, 26-28 August 1914, by Lieutenant-Commander Ernest William Leir (folios 122-123). Report of proceedings of submarine E5, 26-29 August 1918, by Lieutenant-Commander Charles Stuart Benning (folio 124). Report of proceedings of submarine E6, 28 August 1914, by Lieutenant-Commander Cecil Ponsonby Talbot (folios 125-126). Report of proceedings of submarine E7, dated 29 August 1914, by Lieutenant-Commander Ferdinand Eric Bertram Feilmann (folios 127-129). Report of movements of submarine E8 on 28 August 1914 by Lieutenant-Commander Francis Herbert Heaveningham Goodhart (folio 130). Report of proceedings of submarine E9, dated 29 August 1914, by Lieutenant-Commander Max Kennedy Horton (folio 131). Correspondence between John Rushworth Jellicoe, Commander in Chief Home Fleets and Commodore (S) Roger Keyes about missing information in signals (folios 134-136). Ssupplement to the report dated 29 August 1914 by Commodore (S) Roger Keyes regarding the Battle of Heligoland Bight (folios 139-140). A report to the Chief of the War staff by R Y Tyrrwhitt (Commodore T) and Roger Keys Commodore (S) dated 16 September 1914 concerning HMS Goshawk and the German Destroyer V 187 and rescue efforts (folios 143-146). Recommendation by Roger Keys Commodore (S) that all the crews of submarines D2, D5, E4, E5, E6, E7 and E9 be considered for the Conspicuous Gallantry Medal (folio 147).