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iNSTAllATiON ANd mAiNTeNANCe rOV The QTrencher (QT) 400 to 1000 remotely operated vehicles (ROVs) are based on two aluminium chassis designs which provide high power trenching capability for the burial of cables, umbilicals and small diameter pipes up to 3m deep in various water depths. The ROVs use variable high flow or high pressure jetting to optimise the trenching to suit the anticipated conditions. Vehicles can be fitted with tracks and/or a rear eductor to enhance burial of large diameter products, as well as a suite of tools for maintenance operations. With their high thrust, the vehicles are capable of rapid post lay survey. This forth generation range of cable maintenance ROVs includes the lessons learned (access, maintainability and fault diagnostics) critical to achieving maximum vehicle availability. feATUreS • Optional rear eductor for large product burial • Optional track modules for hard ground trenching • Variable high flow or high pressure jetting for optimised trenching • Optional cable maintenance tools package incl manipulators, cable cutter and clamp GeNerAl Depth rating dimensions Length (excl. swords) Width height Weight in air (skids) submerged Weight Max tow Load Power (hp)

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PERFORMANCE Vertical Fore / Aft Lateral ROV power Jetting System Main jet tooling configuration Twin leg jet tool with fwd/downward facing jets (sub seabed) and cable depressor Trench depth 0-2.0m standard, 0-3m with extended swords Width control - leg spanning (between inside of legs) 50mm to 400 mm - remotely variable Water supply (in tracked mode) 0-3m with extended swords 0-3m with extended swords twin hydraulically twin hydraulically twin hydraulically driven water pumps driven water pumps driven water pumps absorbing up to 400kW absorbing up to 550kW absorbing up to 700kW Forward jet...

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