The Oslo-listed company said the 81,500-dwt sisterships were built in Korea in 2012 and will join the fleet in April. It did not reveal a price.
Brokers have tipped a trio of ships owned by Singapore-based Active Shipping as the likely candidates: the 81,500-dwt Prime Daisy, Prime Lily and Prime Rose, all built in 2012 at SPP in Korea.
One vessel has an index-linked time charter running until the second quarter of 2016.
