| Name | Sea of Marmara |
| Province ID | 1320 |
| Continent | Europe |
| Super region | Mediterranean Sea |
| Region | Mediterranean |
| Area | Eastern Mediterranean |
| Development | 7 |
| Base Tax | 3 |
| Base Production | 3 |
| Base Manpower | 1 |
| Trade node | English Channel |
Here are the IDs of provinces that in on the same region as Sea of Marmara:
| Province | Province ID |
|---|---|
| Adriatic Sea | 1309 |
| Aegean Sea | 1319 |
| Barbary Coast | 1301 |
| Bay of Alexandria | 1315 |
| Bay of Napoli | 1304 |
| Cape Bon | 1302 |
| Cote D'Azur | 1297 |
| Eastern Black Sea | 1324 |
| Gulf of Almeria | 1294 |
| Gulf of Bomba | 1314 |
| Gulf of Cyprus | 1317 |
| Gulf of Gabes | 1305 |
| Gulf of Lion | 1296 |
| Gulf of Odessa | 1322 |
| Gulf of Satalia | 1932 |
| Gulf of Sirte | 1313 |
| Gulf of Taranto | 1311 |
| Gulf of Valencia | 1295 |
| Gulf of Varna | 1321 |
| Gulf of Venice | 1308 |
| Ionian Sea | 1312 |
| Ligurian Sea | 1298 |
| Palestinian Coast | 1316 |
| Sea of Azov | 1323 |
| Sea of Marmara | 1320 |
| Straits of Gibraltar | 1293 |
| Straits of Messina | 1307 |
| Straits of Otranto | 1310 |
| Tyrrenean Sea | 1303 |
| Western Mediterranean | 1300 |
Here are IDs of provinces that are in the same area as Sea of Marmara:
| Province | Province ID |
|---|---|
| Adriatic Sea | 1309 |
| Aegean Sea | 1319 |
| Bay of Alexandria | 1315 |
| Gulf of Bomba | 1314 |
| Gulf of Cyprus | 1317 |
| Gulf of Satalia | 1932 |
| Gulf of Sirte | 1313 |
| Gulf of Taranto | 1311 |
| Gulf of Venice | 1308 |
| Ionian Sea | 1312 |
| Palestinian Coast | 1316 |
| Sea of Marmara | 1320 |
| Straits of Otranto | 1310 |