Seabed photographs taken along OFOBS profile HE502_8-1 during HEINCKE cruise HE502@en

The OFOBS system consisted of a towed underwater camera system equipped with both a high-resolution photo-camera (iSiTEC, CANON EOS 5D Mark III) and a high-definition video-camera (iSiTEC, Sony FCB-H11) as well as an integrated sidescan sonar system. The cameras were mounted on a steel frame (140L x 92W x 135H cm), together with two strobe lights (iSiTEC UW-Blitz 250, TTL driven), three laser pointers spaced with a distance of 50 cm used to estimate the size of seafloor structures, four LED lights, and a USBL positioning system (Posidonia) to track the position of the OFOBS during deployments, with additional positioning information provided by the integrated INS and DVL systems, which was undergoing testing during this cruise. […]OFOBS系统由一套拖曳式水下摄像系统构成，该系统搭载一台高分辨率数码相机（iSiTEC，佳能EOS 5D Mark III）与一台高清摄像机（iSiTEC，索尼FCB-H11），同时集成了侧扫声呐系统。摄像设备被安装于钢制框架（尺寸规格为140长×92宽×135高厘米）之上，同时配套搭载两台频闪灯（iSiTEC UW-Blitz 250，支持TTL驱动）、三台间距为50厘米的激光指示器（用于估算海底构造的尺寸）、四台LED照明灯，以及一套超短基线定位系统（Ultra-Short Baseline，USBL，Posidonia），用于在布放过程中追踪OFOBS的位置；此外集成的惯性导航系统（Inertial Navigation System，INS）与多普勒测速仪（Doppler Velocity Log，DVL）可提供额外的定位信息，整套系统在本次航次期间正处于测试阶段。[…]