| GMD | Nautical Chart |
| Language | English |
| Classification | BA_2241 1959 |
| Publisher | London, Admiralty, 1959 |
| Edition | New ed. (1921) |
| Subject | Baltic. Entrance to the Gulf of Finland and Northern Entrances to Gulf of Riga. [Natural scale 1: 196,000. |
| Series | Admiralty Charts2241 |
| Description | Chart; 102 x 70 cm |
| ISBN | isbn1668 |