West Coast of Africa Bight of Biafra River Cameroon with the Ambas Islands by Captain W. Allen H.M.S. Wilberforce, 1842
        
        Scale: circa 1:150,000 (lat). Uncoloured chart with magnetric variation marked. Coordinates given  Insets: 1. Ambas or Amboise Islands [circa 1:40,000 (bar)]; 2. Nicoll Island [circa 1:40,000 (bar)]
              
      
    Object Details
| ID: | G241:4/28 | 
|---|---|
| Collection: | Charts and maps | 
| Type: | Chart | 
| Display location: | Not on display | 
| Creator: | Allen, William; United Kingdom Hydrographic Office (UKHO) | 
| Places: | Gulf of Guinea; West Africa | 
| Date made: | 1843; 1889; 1843 1889 | 
| Credit: | © Crown copyright. National Maritime Museum, Greenwich, London | 
| Measurements: | Sheet: 69 cm x 49 cm |