Bulk carrier lost rudder while leaving Tauranga, NZ

Bulk carrier ACHILLES BULKER lost steering while leaving Tauranga, NZ, in the afternoon Jul 24. Bulk carrier with cargo of logs is or was bound for China. Tugs came to assist, ACHILLES BULKER was anchored at Tauranga outer anchorage, and as of Jul 30, remains anchored. The ship lost her rudder, found later on seabed, with signs of previous damages. Not clear how to deal with situation and refit rudder – understood dry docking is required.