The Managing Director, Nigerian Ports Authority (NPA), Hadiza Bala Usman (Middle), the United Kingdom Hydrographer, Cathy Tunks (2nd from right), Chris Booth of the UK Hydrographic Office, (2nd from left), the General Manager, Engineering, NPA, Engr. Rufai Mohammed (right) and the Principal Manager, Hydro & Dredging, NPA, Amos Ishaya Talum during a working visit by the UK Hydrographic Office delegation to the Managing Director in Marina, on Monday.