This document contains specifications for 7 seismic vessels: Amani Adira, Adira, Asima, Alima, Naila, Vyacheslav Tikhonov, and Barbaros Hayreddin Pasa. It lists details such as year built, owner, flag, dimensions, crew capacity, seismic equipment, and other technical specifications. The vessels are owned and operated by PolarCus to provide marine geophysical acquisition services.