| Departed Liverpool/ Southend | Saturday, March 23rd 1940 | 
| Joined OG.23 | Monday, March 25th 1940 | 
| Arrived Gibraltar | Sunday, March 31 1940 | 
| No. of vessels (Hague) | 30 + 33 / 51 | 
| Actual number of vessels | 27 + 22 / 49 + 4 did not sail + 3 escorts. | 
| Vessels lost from convoy | 
Note: OB.115G + OA.115G joined to form OG.23 on Tuesday, March 5th 1940.
  AGUILA and SALICIA acted as rescue vessels. 
Pdt. OG.23  | 
    Vessel  | 
    Cargo  | 
    From  | 
    To  | 
  
93  | 
    AQUILA | Liverpool  | 
    ||
53  | 
    ASHCREST | Ballast  | 
    Cardiff  | 
    Bona  | 
  
45  | 
    BARNBY | Coal  | 
    Southend  | 
    Montevideo  | 
  
94  | 
    BARON FORBES | Liverpool  | 
    ||
73  | 
    BARON MACCLAY | Liverpool  | 
    ||
62  | 
    BARON NEWLANDS | Liverpool  | 
    ||
43  | 
    BARON RAMSEY | Coal  | 
    Southend  | 
    Oran  | 
  
95  | 
    BEIGNON | Ballast  | 
    Cardiff  | 
    Dakar  | 
  
22  | 
    BRIKA | Coal  | 
    Southend  | 
    Gibraltar  | 
  
65  | 
    BRITISH GRENADIER | Ballast  | 
    Cardiff  | 
    Aruba  | 
  
42  | 
    BRITISH JUDGE | Ballast  | 
    Southend  | 
    Abadan  | 
  
16  | 
    BUFFIELD | Southend  | 
    Abadan  | 
  |
32  | 
    CAITHNESS | Ballast  | 
    Southend  | 
    Alexandria  | 
  
63  | 
    CITY OF SHANGHAI | Liverpool  | 
    ||
61  | 
    CLAN MACBRAYNE | Liverpool  | 
    ||
81  | 
    CLAN MACNAUGHTON | Liverpool  | 
    ||
82  | 
    CLAN MACPHERSON | Liverpool  | 
    ||
33  | 
    CLAN MACWHIRTER | DID NOT SAIL  | 
    Southend  | 
    Port Said  | 
  
51  | 
    DOLIUS | Liverpool  | 
    ||
15  | 
    DOMINO | Gen.  | 
    Southend  | 
    Gibraltar  | 
  
64  | 
    ETRIB | Liverpool  | 
    ||
52  | 
    HARPASA | Coal  | 
    Barry  | 
    Port Said  | 
  
34  | 
    HARPERLEY | Ballast  | 
    Southend  | 
    Alexandria  | 
  
| HMS VOLUNTEER | ESCORT  | 
    |||
| HMS WALKER | ESCORT  | 
    |||
| HMS WANDERER | ESCORT  | 
    |||
21  | 
    IMPERIAL MONARCH | Coal  | 
    Southend  | 
    Marseilles  | 
  
31  | 
    KARABAGH | Ballast  | 
    Southend  | 
    Gibraltar  | 
  
72  | 
    KAVAK | Liverpool  | 
    ||
44  | 
    KING CITY | DID NOT SAIL  | 
    Southend  | 
    Alexandria  | 
  
23  | 
    KING IDWAL | Coal  | 
    Southend  | 
    Algiers  | 
  
26  | 
    KYRIAKOULA (Gk) | Ballast  | 
    Southend  | 
    Capetown  | 
  
74  | 
    LONGWOOD | Liverpool  | 
    ||
36  | 
    LYCIA | Ballast  | 
    Southend  | 
    Casablanca  | 
  
96  | 
    MERCHANT ROYAL | DID NOT SAIL  | 
    Cardiff  | 
    Northern Range  | 
  
56  | 
    MORSKA WOLA (Pol) | Coal  | 
    Swansea  | 
    Madeira  | 
  
47  | 
    NAROCZ (Pol) | Coal  | 
    Southend  | 
    Casablanca  | 
  
76  | 
    OROPOS (Gk) | DID NOT SAIL  | 
    Cardiff  | 
    Dakar  | 
  
66  | 
    PEARLMOOR | Ballast  | 
    Cardiff  | 
    Huelva  | 
  
24  | 
    PEEBLES | Ballast  | 
    Southend  | 
    Las Palmas  | 
  
13  | 
    ROD-EL-FARAG (Eg) | Ballast  | 
    Southend  | 
    Constantinople  | 
  
12  | 
    SAGANAGA | Ballast  | 
    Southend  | 
    Bona  | 
  
91  | 
    SAINT ANSELM | Liverpool  | 
    ||
85  | 
    SALACIA | Liverpool  | 
    ||
84  | 
    SHAKESPEAR | Liverpool  | 
    ||
75  | 
    STALHEIM (Nor) | Liverpool  | 
    ||
55  | 
    STAR OF RAMLEH | Coal  | 
    Newport  | 
    Alexandria  | 
  
11  | 
    STARSTONE | Ballast  | 
    Southend  | 
    Gibraltar  | 
  
54  | 
    TAYGETOS (Gk) | Pat. Fuel  | 
    Cardiff  | 
    Salonica  | 
  
46  | 
    TREGARTHEN | Coal  | 
    Southend  | 
    Sierra Leone  | 
  
35  | 
    TRONGATE | Coal  | 
    Southend  | 
    Gibraltar  | 
  
83  | 
    TUCURINCA | Liverpool  | 
    ||
14  | 
    VOLO | Gen.  | 
    Southend  | 
    Gibraltar  | 
  
71  | 
    VOLTURNO | Liverpool  | 
    ||
25  | 
    WILLOWBANK | Ballast  | 
    Southend  | 
    Durban  | 
  
92  | 
    ZARIAN | Liverpool  |