| Answer | Crossword Clue |
|---|---|
| OSTIA | Port at mouth of Tiber. |
| OSTIA | Seaport at mouth of Tiber. |
| OSTIA | City at mouth of the Tiber. |
| OSTIA | Ancient city at the mouth of the Tiber |
| ARCHANGEL | Port at mouth of Dvina. |
| NANTES | Port at mouth of Loire. |
| NOVOROSSISK | Black Sea port at mouth of Kuban. |
| BREMERHAVEN | Bombed Nazi port at mouth of Weser. |
| RIGA | Port at the mouth of the Dvina. |
| ROTTERDAM | Large port at the mouth of the Maas river. |
