FREDOlsen Cruise Lines has scheduled two extra cruises into its programme after negotiations to charter out Black Prince fell through.
The cruiseline refused to identify the company it had failed to reach agreement with.
It said Black Prince would now operate a 25-night Ancient Empires round trip cruise out of Dover from October 16.
Stops include La Coruna, Cadiz, Naples, Piraeus, Istanbul, Dikili, Kusadasi, Malta, Tuni, Gibraltar and Tangier. Meanwhile, there will be guest lectures on ancient Rome and Greece and a programme of popular classical music laid on during the voyage.
Prices start at £2,900 per person based on two people sharing an inside cabin.
Black Prince will also carry out a 13-night cruise from Dover departing on December 6. Titled Escape To The Canaries, the voyage includes stops in Madeira, La Palma, Tenerife, Lanzarote Tangier and La Coruna. Prices start from £995 per person.