Downsizing delivers adaptable deep diving ROV

Clever system integration makes the ROV more software driven than hardware dependent and therefore easier to reconfigure for different operational roles. This means different task specific tooling skids can be readily added and changed as needed, along with custom designed options for specific operational needs.

Such tooling can include manipulator packages, anvil and disc cutters, water jetting equipment, torque tools, survey packages with camera booms, drill support and IRM tooling.

Central to the efficiency of the Cougar XTi ROV is the launch and recovery unit (LARS). Built by ODIM, it includes active heave compensation and also features a more compact footprint.

Shrinking the size of the LARS has been made possible by reducing the diameter of the umbilical from a typical 32mm down to 20mm through new power technology. A thinner umbilical also offers less drag, and the 800Hz high frequency power system cuts the size of the ROV’s on board transformer by 80%, thereby improving the vehicle’s power to weight ratio.

Other key developments include a fault tolerant system that isolates any failed component and allows the ROV to keep working at its designated task. Pilots get fault diagnostics through a simplified man/machine interface that interprets the fault data for them before clearly displaying the problem and the remedial action to be taken.

The ROV also has a new autopilot system that gives the pilot more precise positioning of the vehicle by automatically holding depth and heading in much tighter parameters than ever before.

The Cougar XTi is an upgrade of the long proven Cougar concept, with technology introduced from Saab Seaeye’s flagship Jaguar electric work ROV.

DOF Subsea is taking advantage of the advanced ROV design and the company has a specially built vessel to deploy the unit on offshore applications in Brazil.