On 21 October 2015 Navigation Maritime Bulgare acquired the bulk carrier Koznitza (ex TESORO; IMO 9575436) two days later followed by Kamenitza - another bulk carrier (ex REGINA; IMO 9575527). The vessels are sisterships (32 600 t of deadweight) built in 2010 in Liaoning Hohgguang Shipbuilding Co.Ltd, China. Each bulk carrier has a length of 179,90 m, breadth 28,40 m, and draught 10,15 m. Both vessels have five cargo holds with total volume 43 600 m3 and 4 cargo cranes with a cargo lifting capacity 30,5 tons each. The main engines of Koznitza and Kamenitza are made in South Korea under to a MAN B&W license (each with a power of 6480 kW). Each vessel is equipped with three Diesel generators Yanmar, made in Japan. The ex owner of the two bulkers was Samsung Logix Corporation, South Korea. The supervising Classification Society of the vessels is the Korean Register of Shipping.
Ivailo Paskov is the first captain of Koznitza and Valentin Stoykov her first chief engineer, respectively Strahil Ivanov and Todor Dimov for Kamenitza.
Koznitza and Kamenitza continue the Navibulgar tradition as the second bulkers with these names in the Company history. The previous bulk carriers had a deadweight of 24 500 t and were built in the Shipbuilding yard of Varna. Kamenitza (KAMENITZA; IMO 8006256) was in operation from 3 October 1980 till 21 July 2012 and Koznitza (KOZNITZA; IMO 8325901) from 3 August 1984 till 3 April 2013.