Seabed photographs taken along OFOBS profile HE502_6-1 during HEINCKE cruise HE502

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系统由一套配备高分辨率照相机（iSiTEC，CANON EOS 5D Mark III）和高清晰度视频相机（iSiTEC，Sony FCB-H11）的拖曳式水下摄像头系统组成，同时整合了一套侧扫声纳系统。照相机安装在140L x 92W x 135H厘米的钢结构框架上，辅以两盏闪光灯（iSiTEC UW-Blitz 250，TTL驱动），三枚间隔50厘米的激光指示器用于估计海底结构尺寸，四盏LED灯，以及一套USBL定位系统（Posidonia）以追踪OFOBS在部署过程中的位置，此外，集成惯性导航系统（INS）和测深侧扫声纳（DVL）系统亦提供了额外的定位信息，这些系统在本航次期间正处于测试阶段。