Andreas Martinos-controlled Minerva Marine is about to make one of the biggest bulker expansion moves in its 25-year history with the purchase of three capesize ships.

According to ship-management sources and brokers, the Athens-based company is in close talks to acquire a trio of South Korean-controlled sisterships for a total price tag of $81.3m.

The vessels in question are the 179,300-dwt Dong-A Eos (built 2009), and the Dong-A Oknos and Dong-A Astrea (both built 2010).