Nikolas D Pateras’ boxship fleet has reached 23 units and is set to grow further in search of “critical mass”.

Greece’s Contships Management entered the new year the same way it finished the previous one — busily adding tonnage in a quest to cement its position as a big-league player in the feeder containership market.

The Athens-based company has agreed to purchase two pairs of sisterships in separate deals with Chinese and German sellers, respectively, market sources say.