Limassol-based Castor Maritime's astonishing assault on the secondhand market has continued with the purchase of another bulker.

The Nasdaq-listed shipowner said it had acquired a 2013-built kamsarmax for a fee of $21m.

Brokers said the ship is the 82,000-dwt Peak Proteus, owned by Bermuda-registered Defender Holding.

VesselsValue assesses the ship as worth $22.65m.