Turkish container terminal operator Mardas Marmara Denizcilik Isletmeleri (Mardas) has modified six of its Terex Gottwald Model 7 mobile harbour cranes at the Port of Ambarli in Turkey. Modifications included extending each crane?s tower by 5 m, increasing the working radius from 51 to 54 m and increasing the height of the boom pivot point, a company spokesperson said.