The possibility of starting your cruise on a base and end it in another allows the captain to plan the route in a completely different way, and opens up new exploration possibilities.
It is possible to plan OneWay between basis in any period on request. The crew who wants to take advantage of this opportunity will only need to give up one cruise day, and pay 200€ as a refund.
One more opportunity are two different crews who will agree for a OneWay cruise.