![]() ![]() Additional equipment is commonly added to expand the vehicle's capabilities. Most ROVs are equipped with at least a video camera and lights. The pump is then used for propulsion and to power equipment such as torque tools and manipulator arms where electric motors would be too difficult to implement subsea. However, in high-power applications, most of the electric power drives a high-power electric motor which drives a hydraulic pump. ![]() Once at the ROV, the electric power is distributed between the components of the ROV. Where used, the TMS then relays the signals and power for the ROV down the tether cable. The umbilical cable is an armored cable that contains a group of electrical conductors and fiber optics that carry electric power, video, and data signals between the operator and the TMS. The purpose of the TMS is to lengthen and shorten the tether so the effect of cable drag where there are underwater currents is minimized. The TMS is either a garage-like device which contains the ROV during lowering through the splash zone or, on larger work-class ROVs, a separate assembly mounted on top of the ROV. They are generally, but not necessarily, linked to a host ship by a neutrally buoyant tether or, often when working in rough conditions or in deeper water, a load-carrying umbilical cable is used along with a tether management system (TMS). They are common in deepwater industries such as offshore hydrocarbon extraction. ROVs are unoccupied, usually highly maneuverable, and operated by a crew either aboard a vessel/floating platform or on proximate land. This meaning is different from remote control vehicles operating on land or in the air. ROVs can also carry tooling packages for undertaking specific tasks such as pull-in and connection of flexible flowlines and umbilicals, and component replacement. The ROV is using a torque wrench to adjust a valve on a subsea structure.Ī Remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform tasks such as valve operations, hydraulic functions and other general tasks within the subsea oil & gas industry. ROV at work in an underwater oil and gas field. ![]()
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