COSL owns a DP II engineering support vessel, HAI YANG SHI YOU 623, with ROVs, seabed cable and pipeline tracking devices, pipeline inner detectors and other associated equipments to provide customers with integrated services, which include program engineering design, site operation, data acquisition, engineering analysis, and engineering reports. COSL’s new deepwater investigation vessels, HAI YANG SHI YOU 701 and HAI YANG SHI YOU 702 can operate at water depth to 3000 meters and in a myriad of applications: wellhead maintenance, well completion, workover, well interventions, well abandonments, routing surveys, and ROV and SAT diving support, and moreover, IMR (inspection, maintenance, and repair) and A-frame stern outboard operations.