Design
Generally, the B.Delta design has a relatively wide beam and shallow draft; it emphasises a combination of low fuel consumption and high deadweight.
The exact specification varies, but a recent order for handysize B.Delta37 carriers featured:
Other larger and smaller variants include the B.Delta25, B.Delta43, B.Delta64, B.Delta82 and B.Delta210.
Sales
The ships are built in several third-party shipyards following Deltamarin's design. As of February 2014, 120<http://www.deltamarin.com/shipdesign/bulk-carriers/> B.Delta ships have been ordered, including 21 orders for B.Delta37 ships built by Yangfang Shipyard.
References
B.Delta Wikipedia(Text) CC BY-SA